Developing cartridge and power receiving member

Abstract

Embodiments of the present application relate to the field of image formation, and provide a developing cartridge and a power receiving member. The developing cartridge is detachably mounted in a device body of an image forming device having a drum assembly. The drum assembly comprises a photosensitive drum. The developing cartridge comprises: a developing frame; a developing roller, rotatably supported on the developing frame; and a support member, at least partially fixedly connected to the developing frame. When the developing cartridge is mounted in the device body, the support member cooperates with the device body so that the developing cartridge is positioned at a contact position where the developing roller is in contact with the photosensitive drum. In the present application, the developing roller is kept in contact with the photosensitive drum by means of the support member. When mounted, the developing cartridge only has the contact position where the developing roller is in contact with the photosensitive drum, and does not have a separation position where the developing roller is separated from the photosensitive drum, so that the relative position between the developing cartridge and the drum assembly is kept stable, thereby facilitating keeping good contact between the developing roller and the photosensitive drum, ensuring that a developing operation is carried out stably, thus improving the printing quality or developing quality.

Description

Developing cartridge and power receiving member TECHNICAL FIELD

[0001] The present application relates to the field of imaging, and in particular to a developing cartridge and a power receiving member. BACKGROUND

[0002] An image forming apparatus forms an image on a recording medium, and examples of the image forming apparatus include an electronic copying machine, an electrophotographic printer (e.g., a laser beam printer, an LED printer, etc.), a facsimile machine, a word processor, and the like. The image forming apparatus is provided with a developing cartridge that develops an electrostatic latent image on a photosensitive drum using a developer. The developing cartridge has a developing roller that is rotatably supported in a housing thereof, and develops by supplying toner accommodated in the housing from the developing roller to the photosensitive drum.

[0003] CN106597825B discloses a processing cartridge, as shown in FIGS. 1-2, further provided with a detection device PD1 and a trigger switch SW1 that makes the detection device PD1 perform a detection operation, and a push block F103 is provided on the processing cartridge guide rail F100, which is preferably provided on the processing cartridge guide rail F100 on the driving side of the electronic imaging device P (referring to the guide rail structure shown in FIG. 1, i.e., the guide rail on the side close to the driving head 900). When the processing cartridge guide rail F100 is rotated clockwise around the rotation point F101 relative to the photosensitive assembly guide rail F200 due to a pushing force, the push block F103 of the processing cartridge guide rail F100 that rotates together touches the trigger switch SW1 and makes the detection device PD1 perform a detection and generate a signal that the trigger switch SW1 has been turned on; and when the processing cartridge guide rail F100 is rotated counterclockwise around the rotation point F101 relative to the photosensitive assembly guide rail F200 due to a pulling force of the traction member F120 and returns to the initial position before rotation, the push block F103 no longer touches the trigger switch SW1, so the trigger switch SW1 is turned off, and the detection device PD1 generates a signal that the trigger switch SW1 has been turned off.

[0004] In this way, the signal obtained by the detection device PD1 makes the electronic imaging device P detect whether the processing cartridge installed by the user is compatible with the electronic imaging device P. For example, a detection signal is generated: “on-off” or “on-off-on-off”. If the processing cartridge installed by the user can generate the corresponding detection signal through the above detection steps, the electronic imaging device P automatically determines that the user has installed a compatible processing cartridge, the electronic imaging device P displays that the detection step is completed, and the user can perform normal developing operation (printing).

[0005] CN117706891A discloses another developing cartridge and image forming apparatus, which is provided with a built-in detection device, similar to CN106597825B, as shown in FIG. 3 and FIG. 5, the built-in detection device includes a swing guide (driving side swing guide 80 / non-driving side swing guide 81, the driving side swing guide 80 is similar to the process cartridge guide rail F100) and a pressing member (driving side apparatus pressing member 150 / non-driving side apparatus pressing member 151), the driving side swing guide 80 / non-driving side swing guide 81 is installed in the image forming apparatus through a connecting rod, and the driving side swing guide 80 / non-driving side swing guide 81 can swing in the image forming apparatus with the connecting rod as the center.

[0006] When the developing cartridge is installed into the image forming apparatus, the pressing member (driving side apparatus pressing member 150 / non-driving side apparatus pressing member 151) is triggered by the closing of the image forming apparatus door cover, moves in the N7 direction (the N7 direction is shown in FIG. 5(c)), and contacts the driving side contact / spacing rod and the non-driving side contact / spacing rod 72, wherein the first contact surface 70a of the driving side contact / spacing rod receives the force F11 from the second contact surface 150b of the driving side apparatus pressing member 150 (FIG. 4(c)), so that the moment M10 balanced with the force F11 acts on the driving side contact / spacing rod. Therefore, the external force of the force F11 acts on the developing cartridge, thereby driving the developing cartridge to move in the direction of the drum assembly, so that the developing roller contacts the photosensitive drum.

[0007] Subsequently, the image forming apparatus performs built-in detection (i.e., machine recognition) on the developing cartridge. The driving side pressing member 150 drives the driving side contact / spacing rod to move in the N8 direction (the N8 direction is shown in FIG. 5(c)), the driving side contact / spacing rod drives the developing cartridge to move in the direction away from the drum assembly, and the driving side positioning portion / non-driving side positioning portion (not shown in the figure) on the developing cartridge is positioned by the positioning portion on the driving side swing guide 80 / non-driving side swing guide 81, therefore, the developing cartridge cooperates with the driving side swing guide 80 / non-driving side swing guide 81, drives the driving side swing guide 80 to swing clockwise (N5 direction), and cooperates with other structures of the image forming apparatus to complete the built-in detection of the developing cartridge together (similar to the detection step of CN106597825B, there is a trigger switch on the image forming apparatus, which is touched by the driving side swing guide 80, and the detection device generates a corresponding detection signal).

[0008] After the installation detection is completed, the driving side pressing member 150 drives the driving side contact / interval rod to reset in the N7 direction, and the developing cartridge returns to the contact position where the developing roller contacts the photosensitive drum. At the same time, the driving side biasing unit 76 (similar to the traction F120) is arranged between the protruding portion 80h of the driving side swing guide 80 and the protruding portion 90d of the driving side side plate 90, and is biased in the direction of the arrow N12 (Fig. 4(a)) as described above. Therefore, the external force of the force F12 in the direction of the arrow N12 acts on the developing cartridge positioned by the driving side swing guide 80, and therefore the driving side swing guide 80 is swung counterclockwise and resets (in the N6 direction) under the action of the driving side biasing unit 76.

[0009] The movement of the developing cartridge between the separation position and the contact position is achieved in the manner of machine recognition, and in the machine recognition process, the developing roller moves with the developing cartridge for one or more times. The shaking of the developing cartridge or the movement of the developing roller can cause the developing cartridge to be positioned inaccurately when returning to the contact position after the machine recognition is completed, the developing roller and the photosensitive drum are not in good contact, and thus printing abnormalities are caused.

[0010] Further, in the machine recognition process of the movement of the developing cartridge between the separation position and the contact position, the driving head of the image forming apparatus and the driving assembly of the developing cartridge also repeatedly engage and separate for multiple times, which can easily cause the structure of the driving head of the image forming apparatus or the driving assembly of the processing cartridge to be worn or broken, so that the driving head and the driving assembly are difficult to stably engage and transmit power to each other. In this way, the image forming apparatus or the processing cartridge cannot continue to be normally used, and the subsequent developing quality is also affected to different degrees. SUMMARY

[0011] Embodiments of the present application provide a developing cartridge and a power receiving member to solve the problem that in the machine recognition process, the developing roller moves with the developing cartridge for one or more times, the shaking of the developing cartridge or the movement of the developing roller can cause the developing cartridge to be positioned inaccurately when returning to the contact position after the machine recognition is completed, the developing roller and the photosensitive drum are not in good contact, and thus printing abnormalities or the developing quality are caused.

[0012] In a first aspect, embodiments of the present application provide a developing cartridge which is detachably installed in a device main body of an image forming apparatus with a drum assembly, the drum assembly including a photosensitive drum, and the developing cartridge including:

[0013] a developing frame;

[0014] a developing roller rotatably supported on the developing frame; and

[0015] A support member is fixedly connected to the developing frame at least partially, and is configured to interact with the device main body when the developing cartridge is installed in the device main body, so as to position the developing cartridge at the contact position where the developing roller contacts the photosensitive drum.

[0016] In a possible implementation, the support member includes a first support member, which is a magnetic member, and the magnetic member generates an attractive force with a metal part of the device main body, so as to position the developing cartridge at the contact position where the developing roller contacts the photosensitive drum.

[0017] In a possible implementation, the support member includes at least one second support member or at least one third support member, and each of the second support member and the third support member includes a fixed part, an elastic member, and a movable part, the fixed part is fixedly connected to the developing frame, the movable part is elastically connected to the fixed part through the elastic member, the movable part abuts against a guide part of the device main body, and the elastic member is compressed, and an elastic force of the elastic member is used to position the developing cartridge at the contact position where the developing roller contacts the photosensitive drum.

[0018] In a possible implementation, the support member includes at least one third support member, a bottom of the third support member forms a hook part, the hook part of the third support member is used to hook a bottom of a metal plate at a laser port of the device main body, and the hook part protrudes from the developing frame.

[0019] In a possible implementation, the support member includes at least one third support member, the third support member includes a connecting part, a positioning part, and a deformation part, the connecting part is fixedly connected to the developing frame, the positioning part is used to abut against a positioned part of the device main body, the deformation part has a connecting end and a free end, the connecting end is fixedly connected to the connecting part and the positioning part respectively, the free end is used to abut against an abutted part of the device main body, the deformation part is deformed under the action of the abutted part, and an elastic force of the deformation part is used to position the developing cartridge at the contact position where the developing roller contacts the photosensitive drum.

[0020] In a possible implementation, a shaft sleeve is further included, a shaft sleeve hole is arranged on the developing frame, and the shaft sleeve is fixedly installed in the shaft sleeve hole, and an end of the developing roller is rotatably installed in the shaft sleeve.

[0021] In a possible implementation, a driving gear and a power receiving member are further included, the driving gear is rotatably supported on the developing frame, and the power receiving member is in transmission connection with the driving gear.

[0022] The power receiving member has a first state and a second state, when the power receiving member is in the first state, the power receiving member interferes with the driving head of the image forming device and is pushed to move in the direction opposite to the installation direction, when the power receiving member is in the second state, the driving force receiving member cannot move in the direction opposite to the installation direction.

[0023] In a possible implementation, the developing frame further comprises a movable member movably arranged on the developing frame, the movable member is used to receive the driving force of the image forming device, the developing frame is provided with an abutting portion abutting against the movable member, when the movable member moves along the abutting portion, the center of rotation of the movable member does not overlap with the non-overlapping portion of the powder tank of the developing frame in the axial direction of the developing roller.

[0024] In a possible implementation, the developing frame further comprises a first movable member, the developing frame comprises a driving side developing side cover arranged on the driving side of the developing cartridge, the first movable member is slidably arranged on the driving side developing side cover, the first movable member comprises a gravity block, when the developing cartridge acts on the installation detection device of the device main body, the first movable member is reset to the non-recognized installation position under the gravity of the gravity block.

[0025] In a possible implementation, the developing frame further comprises a first movable member, the developing frame comprises a driving side developing side cover arranged on the driving side of the developing cartridge, the first movable member is slidably arranged on the driving side developing side cover, the first movable member comprises a gravity block, when the developing cartridge acts on the installation detection device of the device main body, the first movable member is reset to the non-recognized installation position under the gravity of the gravity block.

[0026] The developing cartridge and the power receiving member provided in the embodiments of the present application can realize the contact between the developing roller and the photosensitive drum through the support member, the developing cartridge has only the contact position of the contact between the developing roller and the photosensitive drum after installation, and has no separation position of the separation between the developing roller and the photosensitive drum, so that the relative position between the developing cartridge and the drum assembly is kept stable, the developing roller and the photosensitive drum are kept in good contact, the developing work is stably performed, and the printing quality or the developing quality is improved.

[0027] The developing cartridge has only the contact position of the contact between the developing roller and the photosensitive drum after installation, so that the relative position between the driving head of the image forming device and the driving assembly of the developing cartridge is kept stable, the structure of the driving head of the image forming device or the driving assembly of the processing cartridge is prevented from being worn or broken, and the image forming device or the processing cartridge can continue to be normally used. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0029] Fig. 1 is a structural schematic diagram of a detection device of an imaging apparatus of the prior art CN106597825B;

[0030] Fig. 2 is a structural schematic diagram of a detection device of an imaging apparatus of the prior art CN106597825B;

[0031] Fig. 3 is a side sectional view of an imaging apparatus of the prior art CN117706891A;

[0032] Fig. 4 is a side view of a driving side swing guide and a driving side of a developing cartridge of the prior art CN117706891A;

[0033] Fig. 5 is a side view of a driving side swing guide and a driving side of a developing cartridge of the prior art CN117706891A;

[0034] Fig. 6 is a schematic diagram of the installation of a process cartridge of the prior art CN110673455B, wherein Fig. 6 illustrates a third guide portion located at a driving side;

[0035] Fig. 7 is a schematic diagram of the installation of a process cartridge of the prior art CN110673455B, wherein Fig. 7 illustrates a second guide portion located at a non-driving side;

[0036] Fig. 8 is a structural schematic diagram of a developing cartridge of an embodiment of the present application;

[0037] Fig. 9 is a side view of a developing cartridge and a drum assembly of an embodiment of the present application;

[0038] Fig. 10 is an enlarged view of B in Fig. 9;

[0039] Fig. 11 is a structural schematic diagram of a driving side developing side cover, a first movable member and a driving side developing pressure spring of an embodiment of the present application;

[0040] Fig. 12 is a structural schematic diagram of a driving side developing side cover and a first movable member of an embodiment of the present application;

[0041] Fig. 13 is a structural schematic diagram of a first movable member of an embodiment of the present application;

[0042] Fig. 14 is a structural schematic diagram of a driving side of a developing cartridge of an embodiment of the present application;

[0043] Fig. 15 is a structural diagram of the developing cartridge, the drum assembly, and the device main body of Embodiment 3 of the present application on the driving side;

[0044] Fig. 16 is a structural diagram of the developing cartridge, the drum assembly, and the device main body of Embodiment 3 of the present application;

[0045] Fig. 17 is a structural diagram of the developing cartridge, the drum assembly, and the device main body of Embodiment 3 of the present application from another angle;

[0046] Fig. 18 is a structural diagram of the developing cartridge of Embodiment 4 of the present application on the driving side;

[0047] Fig. 19 is an exploded view of the developing cartridge of Embodiment 4 of the present application on the driving side;

[0048] Fig. 20 is a structural diagram of the developing cartridge and the drum assembly of Embodiment 5 of the present application after being installed in the device main body;

[0049] Fig. 21 is an exploded perspective view of the developing cartridge, the drum assembly, the driving side swing guide, and the non-driving side swing guide of Embodiment 5 of the present application;

[0050] Fig. 22 is a structural diagram of the developing cartridge, the photosensitive drum, and the metal plate of the device main body of Embodiment 5 of the present application;

[0051] Fig. 23 is a structural diagram of the developing cartridge, the photosensitive drum, and the metal plate on the driving side of the device main body of Embodiment 5 of the present application;

[0052] Fig. 24 is a structural diagram of the first movable member of Embodiment 5 of the present application;

[0053] Fig. 25 is a structural diagram of the first movable member, the driving side developing side cover, and the driving side developing pressure spring of Embodiment 5 of the present application;

[0054] Fig. 26 is a structural diagram of the non-driving side developing side cover of Embodiment 5 of the present application;

[0055] Fig. 27 is a structural diagram of the developing cartridge and the metal plate of the device main body of Embodiment 6 of the present application;

[0056] Fig. 28 is an exploded view of the developing container and the support of the developing cartridge of Embodiment 6 of the present application;

[0057] Fig. 29 is a structural diagram of the developing cartridge of Embodiment 7 of the present application;

[0058] Fig. 30 is a structural diagram of the driving side developing side cover, the first movable member, the push-receiving block, and the push elastic member of Embodiment 7 of the present application;

[0059] Fig. 31 is a structural diagram of the first movable member of Embodiment 7 of the present application;

[0060] Fig. 32 is a structural diagram of a drive-side developing-side cover, a first movable member, a push-receiving block, and a push spring of Embodiment 8 of the present application;

[0061] Fig. 33 is a structural diagram of a drive-side developing-side cover and a first movable member of Embodiment 9 of the present application;

[0062] Fig. 34 is a structural diagram of a developing cartridge and a part of an apparatus main body of Embodiment 10 of the present application;

[0063] Fig. 35 is a structural diagram of a part of a developing container and a support when not installed of Embodiment 10 of the present application;

[0064] Fig. 36 is a structural diagram of a part of a developing container and a support when installed of Embodiment 10 of the present application;

[0065] Fig. 37 is a structural diagram of a developing cartridge of Embodiment 11 of the present application from one angle;

[0066] Fig. 38 is a structural diagram of a developing cartridge of Embodiment 11 of the present application from another angle;

[0067] Fig. 39 is a partially exploded diagram of a drive end of a developing cartridge of Embodiment 11 of the present application;

[0068] Fig. 40 is a diagram of a conductive end guard and an electrode of Embodiment 11 of the present application;

[0069] Fig. 41 is a structural diagram of a drive gear of Embodiment 11 of the present application;

[0070] Fig. 42 is a structural diagram of a power receiving member of Embodiment 11 of the present application;

[0071] Fig. 43 is a cross-sectional view of a drive assembly of Embodiment 11 of the present application;

[0072] Fig. 44 is a structural diagram of a drive end guard of Embodiment 11 of the present application;

[0073] Fig. 45 is a partially exploded diagram of a drive end of a modification of Embodiment 11 of the present application;

[0074] Fig. 46 is a cross-sectional view of a drive end of a modification of Embodiment 11 of the present application;

[0075] Fig. 47 is a cross-sectional view of a drive end of Embodiment 11 of the present application;

[0076] Fig. 48 is a side view of a developing cartridge when a power receiving member is in a first state of Embodiment 11 of the present application;

[0077] Fig. 49 is a cross-sectional view of a developing cartridge when a power receiving member is in a first state of Embodiment 11 of the present application;

[0078] Fig. 50 is a side view of the developing cartridge of Embodiment XI of the present application when the power receiving member is in the second state;

[0079] Fig. 51 is a sectional view of the developing cartridge of Embodiment XI of the present application when the power receiving member is in the second state;

[0080] Fig. 52 is a sectional view of the drive end of the developing cartridge of Embodiment XII of the present application;

[0081] Fig. 53 is a structural schematic view of the support seat of Embodiment XII of the present application;

[0082] Fig. 54 is a structural schematic view of the drive gear of Embodiment XII of the present application;

[0083] Fig. 55 is a sectional view of the developing cartridge of Embodiment XII of the present application when the power receiving member is in the first state;

[0084] Fig. 56 is a sectional view of the developing cartridge of Embodiment XII of the present application when the power receiving member is in the second state;

[0085] Fig. 57 is an exploded schematic view of the drive assembly of Embodiment XIII of the present application;

[0086] Fig. 58 is a structural schematic view of the drive gear of Embodiment XIII of the present application;

[0087] Fig. 59 is a structural schematic view of the drive end cover of Embodiment XIII of the present application;

[0088] Fig. 60 is a structural schematic view of the slider seat of Embodiment XIII of the present application;

[0089] Fig. 61 is a structural schematic view of the slider of Embodiment XIII of the present application;

[0090] Fig. 62 is a sectional view of the developing cartridge of Embodiment XIII of the present application when the power receiving member is in the first state;

[0091] Fig. 63 is a sectional view of the developing cartridge of Embodiment XIII of the present application when the power receiving member is in the first state;

[0092] Fig. 64 is a sectional view of the developing cartridge of Embodiment XIII of the present application when the power receiving member is in the second state;

[0093] Fig. 65 is a sectional view of the developing cartridge of Embodiment XIII of the present application when the power receiving member is in the second state;

[0094] Fig. 66 is a structural schematic view of one angle of the developing cartridge of Embodiment XIV of the present application;

[0095] Fig. 67 is a structural schematic view of another angle of the developing cartridge of Embodiment XIV of the present application;

[0096] Fig. 68 is a schematic view of the driving end cover and the contact action assembly and the buffer assembly of the application example 14 at one angle;

[0097] Fig. 69 is a schematic view of the driving end cover and the contact action assembly and the buffer assembly of the application example 14 at another angle;

[0098] Fig. 70 is a schematic view of the driving end cover and the contact action assembly of the application example 14 at another angle;

[0099] Fig. 71 is a schematic view of the first movable member of the application example 14;

[0100] Fig. 72 is a schematic view of the conductive end cover and the contact action assembly of the application example 14;

[0101] Fig. 73 is a schematic view of the driving end cover and the contact action assembly of the application example 15 at one angle;

[0102] Fig. 74 is a schematic view of the driving end cover and the contact action assembly of the application example 15 at another angle;

[0103] Fig. 75 is a schematic view of the driving end cover of the application example 15;

[0104] Fig. 76 is a schematic view of the first movable member of the application example 15;

[0105] Fig. 77 is a schematic view of the developing cartridge of the application example 16 at one angle, in which the conductive end cover is omitted;

[0106] Fig. 78 is a schematic view of the developing cartridge of the application example 16 at another angle, in which the conductive end cover is omitted.

[0107] BRIEF DESCRIPTION OF THE DRAWINGS: A1-device main body; 92c-third guide portion; 93b-second guide portion; 95-metal plate; 95a-side inclined surface; 95b-bottom portion; 80-driving side oscillation guide; 81-non-driving side oscillation guide; C-drum assembly; 21-drum frame; 10-photosensitive drum; B-developing cartridge; 16-developing container; 16c-shaft sleeve hole; 16c1-mounting positioning opening; 16d-shaft sleeve; 16d1-radial protruding portion; 180-coupling member; 29-developing roller gear; 34-driving side developing side cover; 34a-slotted hole; 46-non-driving side developing side cover; 13-developing roller; 16a-first support member; 34i-second support member; 34i1-second fixed portion; 34i11-third opening; 34i2-second elastic member; 34i3-second movable portion; 34i31-second limiting portion; 120-first movable member; 71-driving side developing pressure spring; 70-driving side detection member; 34b-driving side positioning portion; 120a-gravity block; 51-power receiving member; 52-driving gear; 53-developing gear; 54-stirring gear; 14-driving end protective cover; 141-first annular protrusion; 142-sliding hole; 143-first limiting wall; 144-second limiting wall; 16b-fitting portion; 16a1-hook portion; 16a2-fixed portion; 16a21-clamping portion; 16a22-sliding hole; 16a23-first opening; 16a24-second opening; 16a3-elastic member; 16a4-movable portion; 16a41-abutment inclined surface; 16a42-limiting portion; 46b-non-driving side positioning portion; 34c-driving side rotation stopper; 46c-non-driving side rotation stopper; 41-electrode contact; 160a-third support member; 16a5-connection portion; 16a6-positioning portion; 16a7-deformation portion; 16a71-connection end; 16a72-free end; 16a8-extension portion; 16a9-tipped end; 120b-urging action portion; 420-urging receiving block; 410-urging elastic member; 510-first magnet; 520-second magnet; 530-third magnet; A1a-positioned portion; A1b-abutted portion; 150-pressing member; 210-cartridge body; 211-supporting portion; 214-third rotating shaft; 215-clearance portion; 241-returning member; 242-urging member; 251-first connection portion; 252-arm portion; 254-first lever portion; 255-first fitting portion; 256-detection member; 260-first elastic member; 270-second movable member; 271-second connection portion; 272-second lever portion; 273-second fitting portion; 274-fifth connection block; 513-sliding portion; 2121-second rotating shaft; 2122-sixth connection block; 2131-first rotating shaft; 2132-first abutment portion; 2132a-first abutment surface; 2133-first connection block; 2134-fulcrum; 2135-fourth connection block; 2136-second abutment portion;2136a - third abutting surface; 2421 - first supporting rod; 2422 - second supporting rod; 2422a - pushing protrusion; 2423 - third connecting block; 2521 - first supporting arm; 2521a - pushing protrusion; 2522 - second supporting arm; 2522a - fourth abutting surface; 2531 - second abutting surface; 2532 - second connecting block. DETAILED DESCRIPTION

[0108] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of the present application.

[0109] It should be noted that the terms “first”, “second” are used only for descriptive purpose, and should not be construed as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with “first”, “second” can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of “plurality” is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0110] In the present application, unless otherwise specifically defined and limited, the terms “mounting”, “connecting”, “fixing” and the like should be understood in a broad sense, for example, can be fixed connection, or detachable connection, or integrated; can be mechanical connection, or electrical connection or communication with each other; can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0111] In the present application, unless otherwise specifically defined and limited, the first feature is “on” or “under” the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through intermediate medium. Moreover, the first feature can be directly above or obliquely above the second feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature can be directly below or obliquely below the second feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0112] In the above description, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any suitable manner in one or more embodiments or examples. In addition, the person skilled in the art can combine and combine different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0113] As described in the background, the movement of the developing cartridge between the separation position and the contact position realizes the way of the recognition of the machine, and in the recognition process, the developing roller moves with the developing cartridge for one or more times. The shaking of the developing cartridge or the movement of the developing roller can cause the developing cartridge to be not accurately positioned when returning to the contact position after the recognition is completed, and the developing roller is not in good contact with the photosensitive drum, thereby causing printing abnormalities.

[0114] Further, in the process of moving the developing cartridge between the separation position and the contact position for recognition, the driving head of the imaging device and the driving assembly of the developing cartridge also repeatedly engage and separate multiple times, which can easily cause the structure of the driving head of the imaging device or the driving assembly of the processing cartridge to be worn or broken, so that the driving head and the driving assembly are difficult or unable to stably engage and transmit power to each other. In this way, the imaging device or the processing cartridge cannot continue to be used normally, and the subsequent developing quality will also be affected to different degrees.

[0115] To solve the above problems, the embodiments of the present application provide a developing cartridge and a power receiving member. The developing cartridge is provided with a support member, which realizes the contact between the developing roller and the photosensitive drum. After installation, the developing cartridge only has the contact position of the contact between the developing roller and the photosensitive drum, and does not have the separation position of the separation between the developing roller and the photosensitive drum, so that the relative position of the developing cartridge and the drum assembly can be kept stable, and the relative position of the driving head of the imaging device and the driving assembly of the developing cartridge can also be kept stable.

[0116] The developing cartridge provided by the embodiments of the present application will be described in detail below in combination with specific embodiments.

[0117] Embodiment one

[0118] Referring to FIGS. 8-11, the application discloses a developing cartridge B which is detachably installed in the device main body A1 of the image forming device with the drum assembly C. The device main body A1 of the present embodiment can adopt the device main body in CN117706891A, and the device main body A1 is provided with the installation detection device in CN117706891A, that is, the swing guide (the driving side swing guide 80 / the non-driving side swing guide 81), the pressing member (the driving side device pressing member 150 / the non-driving side device pressing member 151), and the specific arrangement of the driving side biasing unit 76 is as described in the prior art, and the detection principle of the installation detection device is similar to CN106597825B, which will not be described here.

[0119] The drum assembly C of the present embodiment includes a drum frame 21, a photosensitive drum 10, and a charging roller (not shown in the figure), and the photosensitive drum 10 and the charging roller are rotatably supported on the drum frame 21 in the length direction of the drum assembly C.

[0120] The developing cartridge B of the present embodiment includes a developing frame, a developing roller 13, a stirring frame (not shown in the figure), and a driving assembly. The two ends of the developing cartridge B in the length direction are the driving side and the non-driving side, respectively, wherein the driving side is provided with the driving assembly for receiving the driving force from the device main body A1, and the non-driving side does not receive the driving force from the device main body A1. The driving assembly includes a coupling member 180, a driving input gear, a developing roller gear 29, etc., wherein the coupling member 180 receives the driving force from the device main body A1 and transmits it to the developing roller gear 29 through the driving input gear, and the developing roller gear 29 drives the developing roller 13 to rotate. The developing frame includes a developing container 16 and developing side covers respectively fixedly arranged at the ends of the developing container 16, and the developing side covers include a driving side developing side cover 34 arranged at the driving side of the developing cartridge B and a non-driving side developing side cover 46 arranged at the non-driving side of the developing cartridge B. The developing container 16 is used for storing the developer, the developing roller 13 and the stirring frame are rotatably supported on the developing container 16 in the length direction of the developing cartridge B, and the stirring frame is used for stirring the developer in the developing container 16 and transmitting it to the direction of the developing roller 13.

[0121] In the present embodiment, when the developing cartridge B is installed, the developing cartridge B does not move or substantially does not move relative to the drum assembly C, and the developing roller 13 and the photosensitive drum 10 are always in contact, that is, the developing roller 13 and the photosensitive drum 10 do not appear to be separated / interval state.

[0122] In the present embodiment, the support member includes a first support member 16a, which is a magnetic member, and the developing cartridge B is positioned at the contact position where the developing roller 13 and the photosensitive drum 10 are in contact through the attraction force between the magnetic member and the metal part of the device main body A1.

[0123] Specifically, the first support 16a in the embodiment is arranged at the bottom of the developing frame and close to one end of the developing roller 13 in the front-rear direction, i.e. at the front end, i.e. the end toward N7, and below the developing roller 13. The position of the device main body Al facing the first support 16a has a metal part (which is a metal crossbar structure with a substantially L-shaped cross section and a length substantially equal to the length of the developing frame) capable of generating an attractive force F2 between the first support 16a and the metal part, the attractive force F2 being substantially directed toward N7, as long as it has at least a component directed toward the direction of the developing roller 13 toward the photosensitive drum 10.

[0124] Preferably, the first support 16a does not directly contact the device main body Al but is spaced apart by a certain distance to avoid excessive magnetic force affecting the installation and removal of the developing cartridge B, and at the same time facilitate adjustment of the magnetic force of the first support 16a to ensure the contact between the developing roller 13 and the photosensitive drum 10.

[0125] The first support 16a is arranged on the developing frame, specifically on the developing container 16, and the installation range of the first support 16a is related to the metal part of the device main body Al. In the embodiment, preferably, as viewed from the axis direction of the developing roller, referring to FIGS. 9 and 10, the line between the rotation center of the coupling member 180 and the rotation center of the developing roller 13 is L1, the line between the rotation center of the developing roller 13 and the center of the first support 16a is L2, L1 and L2 form an angle θ, the value range of the angle θ is 15°≤θ≤50°, and the first support 16a is installed in the position range covered by the value of the angle θ, i.e. in the range between the dashed lines L21 (θ=15°) and L22 (θ=50°).

[0126] Further in the embodiment, the first support 16a can be provided with two groups, which are fixed on one side of the developing container 16, one group of the two groups of first supports 16a is close to the driving side, and the other group is close to the non-driving side, to facilitate the balance of the developing cartridge B.

[0127] Further in the embodiment, the first support 16a can be a long strip block (as shown in FIG. 8) or a cylindrical structure.

[0128] In other embodiments, the first support 16a can also be one or more than two, fixed on other positions of the developing cartridge B, such as the driving side developing side cover 34 and / or the non-driving side developing side cover 46.

[0129] In other embodiments, the first support 16a can also not be a magnetic member, but rather, by abutting against other locations of the device main body Al, the developing cartridge B is positioned in the contact position.

[0130] In this embodiment, the drive-side developing-side cover 34 is provided with a sliding groove 34a extending in the gravity direction (i.e., the up-down direction) and the front-rear direction (i.e., the N7 and N8 directions). Specifically, the sliding groove 34a is an arc-shaped sliding groove extending upward while extending in the N8 direction.

[0131] Referring to FIGS. 9, 11, and 13, the developing cartridge B further includes a first movable member 120 and a drive-side developing pressure spring 71. The first movable member 120 is slidably provided on the drive-side developing-side cover 34, specifically, on the sliding groove 34a, so as to be movable relative to the drive-side developing-side cover 34 between the non-recognizing position and the recognizing position. The first movable member 120 includes a drive-side detecting member 70 and a drive-side positioning portion 34b. The drive-side positioning portion 34b is configured to act on the drive-side swing guide 80 of the device main body Al to achieve positioning and recognition. The drive-side detecting member 70 is configured to receive a force from the drive-side device pressing member 150 and to drive the first movable member 120 to move in the sliding groove 34a relative to the drive-side developing-side cover 34 between the recognizing position and the non-recognizing position. In this process, the drive-side developing-side cover 34 does not move, the developing cartridge B does not move, and the developing roller 13 does not move relative to the photosensitive drum 10, i.e., the developing roller 13 and the photosensitive drum 10 do not appear in a separated state / interval state. The drive-side developing pressure spring 71 is configured to reset the first movable member 120 to the non-recognizing position.

[0132] When the drive-side device pressing member 150 moves toward the N8 direction and drives the drive-side detecting member 70, the first movable member 120 moves in the sliding groove 34a toward the N8 direction, the drive-side developing pressure spring 71 is stretched, the drive-side positioning portion 34b moves with the first movable member 120, so that the drive-side positioning portion 34b acts on the drive-side swing guide, the drive-side swing guide swings clockwise (specifically, in the N5 direction of FIG. 5(b)), a detection signal is triggered, and then, the drive-side device pressing member 150 moves toward the N7 direction and drives the drive-side detecting member 70, while the first movable member 120 moves in the sliding groove 34a toward the N7 direction under the deformation recovery of the drive-side developing pressure spring 71, so that the first movable member 120 is reset from the recognizing position to the non-recognizing position. The imaging device recognizes the signal generated when the drive-side swing guide swings once or multiple times, so as to determine that the installation is completed, i.e., recognition is achieved.

[0133] The embodiment realizes that the developing roller 13 and the photosensitive drum 10 are kept in contact through the support, the developing cartridge B only has the contact position of the developing roller 13 and the photosensitive drum 10 after installation, and does not have the separation position of the developing roller 13 and the photosensitive drum 10, so that the relative position of the developing cartridge B and the drum assembly C is kept stable, the developing roller 13 and the photosensitive drum 10 are kept in good contact, the developing work is stably carried out, and the printing quality or the developing quality is improved.

[0134] Embodiment two

[0135] Referring to FIGS. 12 and 13, the embodiment differs from the embodiment one mainly in that the gravity block 120a is used to replace the drive-side developing pressure spring 71 to reset the first movable member 120.

[0136] In the embodiment, referring to FIG. 13, the first movable member 120 includes the drive-side detection member 70, the drive-side positioning part 34b, and the gravity block 120a. The gravity block 120a is used to reset the first movable member 120 to the non-recognizing position. In the embodiment, in the front-rear direction, the gravity block 120a is located on the side of the first movable member 120 away from the developing roller 13, that is, the gravity block 120a is closer to the N8 direction on the first movable member 120 (relative to the N7 direction). Specifically, the first movable member 120 can be provided with an extension part in the N8 direction, and the gravity block 120a is arranged at the end of the extension part.

[0137] Referring to FIG. 12, when the drive-side device pressing member 150 moves towards the N8 direction and drives the drive-side detection member 70, the first movable member 120 moves upwards in the chute 34a while moving towards the N8 direction, and the gravity block 120a also moves upwards, the drive-side positioning part 34b moves with the first movable member 120, so that the drive-side positioning part 34b acts on the drive-side swing guide 80, the drive-side swing guide 80 swings clockwise (specifically, the N5 direction of FIG. 5(b)), triggers a detection signal, and then the drive-side device pressing member 150 moves towards the N7 direction and drives the drive-side detection member 70, and at the same time, under the action of the gravity of the gravity block 120a, the first movable member 120 moves downwards in the chute 34a while moving towards the N7 direction. Specifically, since the gravity block 120a moves upwards against the gravity in the previous movement, the gravitational potential energy is stored, at this time, the gravitational potential energy of the gravity block 120a is released, the force in the gravity direction is converted into the force in the front-rear direction (specifically, the N7 direction) through the shape of the chute 34a, so that the first movable member 120 is reset from the recognizing position to the non-recognizing position. The imaging device recognizes the signal generated when the drive-side swing guide 80 swings once or more times, and judges that the installation is completed, that is, the recognizing is realized.

[0138] In the embodiment, the gravity block 120a replaces the drive-side developing pressure spring 71 to reset the first movable member 120, and the first movable member 120 can accurately return to the non-recognizing position with the assistance of the gravity block 120a, thereby avoiding plastic deformation of the drive-side developing pressure spring 71 after multiple uses, which can cause recognition errors and thus printing abnormalities.

[0139] Embodiment Three

[0140] Referring to FIGS. 14 to 17, the embodiment is substantially the same as Embodiment Two, and the difference mainly lies in that the support member of the embodiment further includes a second support member 34i, which plays an auxiliary supporting role for the first support member 16a.

[0141] In the embodiment, the device main body A1 is provided with a guide portion, and when the developing cartridge B is installed, the second support member 34i moves along the guide portion, and when the developing cartridge B is installed in place, the second support member 34i abuts against the guide portion, so that the developing cartridge B is positioned at the contact position where the developing roller 13 contacts the photosensitive drum 10.

[0142] In the embodiment, the second support member 34i has two, which are respectively arranged at the drive side and the non-drive side of the developing cartridge B. Specifically, the two second support members 34i are respectively arranged on the drive-side developing side cover 34 and the non-drive-side developing side cover 46.

[0143] The two second support members 34i are the same in structure, and the second support member 34i arranged at the drive side is taken as an example. Referring to FIGS. 14 and 15, the second support member 34i includes a second fixed portion 34i1, a second elastic member 34i2, and a second movable portion 34i3. The second fixed portion 34i1 is fixedly connected with the drive-side developing frame, and specifically, the second fixed portion 34i1 can be integrally formed with the drive-side developing frame or can be non-integrally formed. The second movable portion 34i3 is elastically connected with the second fixed portion 34i1 through the second elastic member 34i2, the second movable portion 34i3 abuts against the guide portion, so that the second elastic member 34i2 is compressed, and the elastic force of the second elastic member 34i2 positions the developing cartridge B at the contact position where the developing roller 13 contacts the photosensitive drum 10.

[0144] The second movable portion 34i3 can slide inside the second fixed portion 34i1, and the two ends of the second elastic member 34i2 respectively abut against the inner wall of the second fixed portion 34i1 and the second movable portion 34i3. The second movable portion 34i3 is provided with a second limiting portion 34i31, which cooperates with the third opening 34i11 on the two sides of the second fixed portion 34i1 to prevent the second movable portion 34i3 from being separated from the second fixed portion 34i1.

[0145] Specifically, the guide part in the embodiment can adopt the guide part in the prior art CN110673455B, and specific reference can be made to FIG. 6 and FIG. 7, wherein FIG. 6 schematically shows the third guide part 92c of the driving side guide member 92 located at the driving side in CN110673455B, and FIG. 7 schematically shows the second guide part 93b of the non-driving side guide member 93 located at the non-driving side in CN110673455B. The third guide part 92c and the second guide part 93b are grooves, which are also the installation and dismounting paths of the drum assembly C.

[0146] With the driving side as an example, reference is made to FIG. 15 and FIG. 16. When the developing cartridge B is installed in the device main body A1 along the installation direction, with the movement of the developing cartridge B, the second movable part 34i3 moves along the bottom wall of the third guide part 92c. When the developing cartridge B is installed in place, the second movable part 34i3 continues to abut against the bottom wall of the third guide part 92c, so that the second elastic piece 34i2 is compressed, and the elastic force of the second elastic piece 34i2 makes the second movable part 34i3 abut against the third guide part 92c. When the developing cartridge B is being recognized, the driving side device pressing member 150 moves towards the N8 direction and drives the driving side detection member 70, so that the first movable member 120 moves in the slide groove 34a towards the N8 direction. In this process, the magnetic attraction force between the first support piece 16a and the device main body A1 makes the developing cartridge B remain in the contact position. However, when the magnetic force is insufficient to position the developing cartridge B, the developing cartridge B can rotate clockwise (as viewed from the direction of FIG. 14), so that the contact position of the developing roller 13 and the photosensitive drum 10 deviates, affecting printing. Since the second movable part 34i3 abuts against the third guide part 92c through the elastic force of the second elastic piece 34i2, the rotation of the developing cartridge B is limited, so that the developing cartridge B can be more stably positioned in the contact position. On the non-driving side, reference is made to FIG. 17. The second movable part 34i3 abuts against the second guide part 93b, and the principle is the same, which is not described herein. The developing cartridge B is dismounted and installed in a similar manner. The second movable part 34i3 respectively moves away from the device main body A1 along the third guide part 92c and the second guide part 93b.

[0147] The second elastic member 34i2 in this embodiment plays a buffering role. During installation of the developing cartridge B, the second movable part 34i3 can move relative to the second fixed part 34i1 under the elastic force of the second elastic member 34i2, preventing rigid collision with the third guide part 92c or the second guide part 93b, so that installation of the developing cartridge B is smoother. After the developing cartridge B is installed in place, the elastic force of the second elastic member 34i2 can keep the second movable part 34i3 in abutment with the third guide part 92c or the second guide part 93b. In some other embodiments, the second support member 34i can only have the second fixed part 34i1, without the second elastic member 34i2 and the second movable part 34i3, and the second fixed part 34i1 limits movement of the developing cartridge B through rigid abutment with the third guide part 92c or the second guide part 93b.

[0148] In some other embodiments, there can be only one second support member 34i, i.e., there can be only a second support member 34i on the driving side or the non-driving side. If the second support member 34i is on the driving side, it abuts against the third guide part 92c, and if the second support member 34i is on the non-driving side, it abuts against the second guide part 93b. In other embodiments, the second support member 34i can also be arranged to abut against other guide parts on the device main body Al instead of the third guide part 92c or the second guide part 93b, as long as it can limit movement of the developing cartridge B.

[0149] In some other embodiments, the first support member 16a can not be a magnetic member, but can be arranged to abut against other positions on the device main body Al to position the developing cartridge B at the contact position. In some other embodiments, there can be only the second support member 34i without the first support member 16a, as long as it can limit movement of the developing cartridge B to position the developing cartridge B at the contact position.

[0150] Embodiment Four

[0151] Referring to FIGS. 18 and 19, the difference between this embodiment and Embodiment One is that this embodiment further has a shaft sleeve 16d at the end of the developing roller 13 to prevent wear.

[0152] In this embodiment, the developing cartridge B further includes the shaft sleeve 16d, the developing frame is provided with a shaft sleeve hole 16c, and the shaft sleeve 16d is fixedly installed in the shaft sleeve hole 16c. The end of the developing roller 13 is rotatably installed in the shaft sleeve 16d, and the part of the end of the developing roller 13 exposed outside the shaft sleeve 16d is fixedly sleeved on the developing roller gear 29. The shaft sleeve 16d can prevent the position where the developing roller 13 contacts the developing frame from being severely worn and deformed, thereby affecting stable performance of the developing work and affecting print quality.

[0153] Specifically, the shaft sleeve hole 16c is arranged at the driving side of the developing container 16, and in other embodiments, the shaft sleeve hole 16c can also be arranged on the driving side developing side cover 34.

[0154] Further, the developing container 16 is also provided with at least one mounting positioning port 16c1, in this embodiment, there are two mounting positioning ports 16c1, and the mounting positioning port 16c1 is in communication with the shaft sleeve hole 16c. The shaft sleeve 16d is also provided with a radial protruding portion 16d1, which is mounted at the mounting positioning port 16c1, so that the shaft sleeve 16d is positioned.

[0155] Further, at least one mounting positioning port 16c1 is exposed outwardly. In this embodiment, the radial protruding portion 16d1 is arranged on the shaft sleeve 16d at an interval of 180 degrees, and correspondingly, the two mounting positioning ports 16c1 are also arranged on the shaft sleeve hole 16c at an interval of 180 degrees, one of which is arranged to be exposed outwardly, so that its appearance can be seen, to prevent the developing cartridge B from missing the shaft sleeve 16d during assembly.

[0156] In other embodiments, the radial protruding portion 16d1 is arranged on the shaft sleeve 16d at any position and angle, and correspondingly, the mounting positioning port 16c1 is arranged on the shaft sleeve hole 16c at the same position and angle, as long as the shaft sleeve 16d can be mounted and positioned, which is not limited here.

[0157] Example Five

[0158] Referring to FIGS. 20 and 21, the present application provides an imaging device, which includes a device main body A1, a developing cartridge B and a drum assembly C, the developing cartridge B and the drum assembly C being used to be detachably mounted in the device main body A1. The device main body A1 of this embodiment can adopt the device main body A1 disclosed in the prior art such as CN110673455B, which will not be repeated here.

[0159] The drum assembly C of this embodiment includes a drum frame 21, a photosensitive drum 10 and a charging roller (not shown in the figure), and the photosensitive drum 10 and the charging roller are rotatably supported on the drum frame 21 in the length direction of the process cartridge.

[0160] Referring to FIG. 21, the developing cartridge B of the embodiment includes a developing frame, a developing roller 13, a stirring frame (not shown in the figure) and a driving assembly. Two ends of the developing cartridge B in the length direction are a driving side and a non-driving side, respectively, wherein the driving side is provided with the driving assembly for receiving the driving force from the device main body A, and the non-driving side does not receive the driving force from the device main body A. The driving assembly includes a coupling member 180, a driving input gear, a developing roller gear 29, etc., wherein the coupling member 180 receives the driving force from the device main body A and transmits it to the developing roller gear 29 through the driving input gear, and the developing roller gear 29 drives the developing roller 13 to rotate. The developing frame includes a developing container 16 and developing side covers respectively fixedly arranged at the ends of the developing container 16, and the developing side covers include a driving side developing side cover 34 arranged at the driving side of the developing cartridge B and a non-driving side developing side cover 46 arranged at the non-driving side of the developing cartridge B. The developing container 16 is used to store the developer, and the developing roller 13 and the stirring frame are rotatably supported on the developing container 16 in the length direction of the developing cartridge B, and the stirring frame is used to stir the developer in the developing container 16 and transmit it to the direction of the developing roller 13.

[0161] Referring to FIGS. 22 and 23, in the embodiment, the developing cartridge B further includes a support member, which is used to abut against the device main body A1 when the developing cartridge B is installed in the device main body A1, so that the developing cartridge B is positioned at a contact position where the developing roller 13 contacts the photosensitive drum 10, and the developing cartridge B cannot move relative to the drum assembly C, i.e., the developing roller 13 and the photosensitive drum 10 always remain at the contact position. The support member limits the activity space of the developing cartridge B inside the device main body A1, and finally realizes the installation and positioning of the developing cartridge B, and the developing roller 13 and the photosensitive drum 10 always remain in contact regardless of the working state or non-working state of the developing cartridge B.

[0162] The support member is used to keep the developing roller 13 and the photosensitive drum 10 in contact, and the developing cartridge B only has the contact position where the developing roller 13 and the photosensitive drum 10 contact after installation, and does not have a separation position where the developing roller 13 and the photosensitive drum 10 separate, and no developing pressure spring is arranged, so that the structure of the developing cartridge B is simplified, the manufacturing cost of the developing cartridge B can be effectively reduced, the relative position between the developing cartridge B and the drum assembly C can be kept stable, which is conducive to the stable performance of the developing work and improves the printing quality.

[0163] Specifically, in the present embodiment, the support member includes two third support members 160a, which are respectively fixed on one side of the developing container 16, one of the two third support members 160a is close to the driving side, and the other is close to the non-driving side, so as to facilitate the developing cartridge B to keep balance. In other embodiments, the third support member 160a can also be one or more than two, which are fixed on other positions of the developing cartridge B, such as the driving side developing side cover 34 and / or the non-driving side developing side cover 46. Preferably, the third support member 160a is arranged to abut against the metal plate 95 at the laser port of the device main body A1.

[0164] Further, referring to FIG. 23, the third support member 160a is arranged to abut against the side inclined surface 95a of the metal plate 95 and / or the bottom 95b of the metal plate 95. Preferably, the third support member 160a is S-shaped, and the bottom 95b of the third support member 160a forms a hook portion 16a1, which protrudes from the developing frame and is used to hook the bottom 95b of the metal plate 95. By changing the design shape, design size of the third support member 160a or the positional relationship between the third support member 160a and the developing container 16 or the device main body A1, different degrees of cooperation of the developing roller 13 and the photosensitive drum 10 in contact can be achieved, so as to achieve better developing effect.

[0165] In the present embodiment, the driving side of the developing cartridge B is also provided with a machine recognition assembly and a driving side rotation stopper, the machine recognition assembly including a driving side positioning portion 34b, a driving side detection member 70 and a driving side developing pressure spring 71.

[0166] Specifically, referring to FIGS. 23-25, the driving-side positioning portion 34b is driven by the driving-side detection member 70 to act with the driving-side swing guide 80 of the device main body Al to achieve positioning and machine recognition. In addition, in the present embodiment, the driving-side detection member 70, the driving-side positioning portion 34b and the driving-side rotation stop 34c are fixedly connected, and specifically, in the present embodiment, the three are integrally formed as a first movable member 120 (see FIG. 24). The driving-side developing-side cover 34 is provided with an arc-shaped sliding groove 34a (see FIG. 25), and the first movable member 120 is slidably arranged in the sliding groove 34a. The driving-side detection member 70 receives a force from the driving-side device pressing member of the device main body Al and moves in the sliding groove 34a relative to the driving-side developing-side cover 34. The driving-side positioning portion 34b moves with the first movable member 120, so that the driving-side positioning portion 34b acts with the driving-side swing guide 80 of the device main body Al, and the imaging device recognizes a signal generated when the driving-side swing guide 80 moves one or more times to determine that the machine is installed, i.e., machine recognition is achieved. The driving-side developing pressure spring 71 is used to reset the driving-side detection member 70 in the sliding groove 34a. Specifically, the two ends of the driving-side developing pressure spring 71 are connected with the driving-side developing-side cover 34 and the first movable member 120, respectively. When the force received by the driving-side detection member 70 from the driving-side device pressing member disappears, the first movable member 120 is driven by the tension of the driving-side developing pressure spring 71 to return to the initial position. Preferably, the driving-side developing pressure spring 71 is a tension spring.

[0167] In the present embodiment, the driving-side detection member 70 moves relative to the driving-side developing-side cover 34 when receiving the force from the driving-side device pressing member. The driving-side developing-side cover 34 is fixed, and the developing cartridge B is also fixed, i.e., the driving-side detection member 70 is only used to cooperate with the driving-side positioning portion 34b to achieve the machine recognition function, and does not drive the developing cartridge B to move. The position of the developing cartridge B relative to the drum assembly C and the device main body Al does not change.

[0168] The non-driving end of the developing cartridge B is not provided with a detection member and a tension spring, i.e., in the present embodiment, there is no non-driving-side detection member and non-driving-side tension spring. Referring to FIG. 26, the positioning portion provided at the non-driving end of the developing cartridge B is a non-driving-side positioning portion 46b, which is fixedly arranged on the non-driving-side developing-side cover 46 and used to cooperate with the non-driving-side swing guide 81 of the device main body Al to achieve positioning of the developing cartridge B.

[0169] In some embodiments, referring to FIGS. 23 and 24, the driving end of the developing cartridge B is also provided with a driving-side rotation stop 34c, which is fixedly connected with the driving-side positioning portion 34b and cooperates with the driving-side swing guide 80 to achieve rotation stop.

[0170] In some embodiments, referring to FIG. 26, the non-driving end of the developing cartridge B is also provided with a non-driving side rotation stopper 46c fixedly arranged on the non-driving side developing side cover 46, which cooperates with the non-driving side swing guide 81 of the device main body A1 to achieve rotation stop.

[0171] Embodiment Six

[0172] This embodiment is substantially the same as Embodiment Five, except that the third support 160a of Embodiment Five is a single component, and the entire third support 160a is fixedly connected with the developing frame, while in this embodiment, the third support 160a includes multiple components, only a part of which is fixedly connected with the developing frame.

[0173] The third support 160a is at least partially deformable to generate an elastic force, and when the developing cartridge B is installed in the device main body A1, the third support 160a abuts against the device main body A1 to be deformed, thereby positioning the developing cartridge B at the contact position at which the developing roller 13 contacts the photosensitive drum 10 by the elastic force.

[0174] Referring to FIGS. 27 and 28, in this embodiment, the third support 160a includes a fixed portion 16a2, an elastic member 16a3, and a movable portion 16a4, wherein the fixed portion 16a2 is configured to be fixedly connected with the developing frame, the movable portion 16a4 is connected with the fixed portion 16a2 through the elastic member 16a3 and is configured to be movable relative to the fixed portion 16a2, and the movable portion 16a4 is configured to abut against the device main body A1 to position the developing cartridge B at the contact position at which the developing roller contacts the photosensitive drum of the drum assembly. The arrangement of the fixed portion 16a2, the elastic member 16a3, and the movable portion 16a4 makes the developing cartridge B easier to install and prevents rigid collision with the device main body A1. When the developing cartridge B is installed, the movable portion 16a4 abuts against the device main body A1, so that the elastic member 16a3 is compressed, and the elastic force of the elastic member 16a3 exerts pressure on the developing cartridge B to position the developing cartridge B at the contact position at which the developing roller contacts the photosensitive drum of the drum assembly.

[0175] Specifically, the first end of the fixing part 16a2 is provided with a clamping part 16a21, and the developing container 16 is provided with a matching part 16b. The clamping part 16a21 and the matching part 16b are corresponding clamping groove structures, so that the clamping part 16a21 can be detachably fixedly connected with the matching part 16b, so that the fixing part 16a2 is detachably connected with the developing container 16. In other embodiments, the fixing part 16a2 can also be non-detachably connected with the developing container 16. Specifically, the matching part 16b is a strip-shaped protrusion arranged along the length direction of the developing cartridge B (i.e. along the rotation axis direction of the developing roller 13), and the clamping part 16a21 is a clamping hook arranged along the length direction of the developing cartridge B. The strip-shaped protrusion can be slid into the clamping hook along the length direction of the developing cartridge B to form a match.

[0176] The fixing part 16a2 is provided with a sliding hole 16a22, and the second end of the fixing part 16a2 is a first opening 16a23. The movable part 16a4 is inserted into the sliding hole 16a22 through the first opening 16a23 and can slide along the sliding hole 16a22. The two ends of the elastic member 16a3 respectively abut against the inner wall of the sliding hole 16a22 and the movable part 16a4. The movable part 16a4 is specifically a rod-shaped structure. The first end of the movable part 16a4 is provided with a limiting part 16a42, which cooperates with the second opening 16a24 on both sides of the fixing part 16a2 to prevent the movable part 16a4 from being separated from the fixing part 16a2. The second end of the movable part 16a4 is provided with an abutting inclined surface 16a41, which is used to abut against the side inclined surface 95a of the metal plate 95 at the laser port of the equipment main body A1.

[0177] Example Seven

[0178] The embodiment is basically the same as embodiment five, the difference is that the driving side developing pressure spring 71 is used for the elastic reset of the first movable member 120 in embodiment five, and in this embodiment, the first movable member 120 is reset by the gravitational potential energy of the gravity block 120a. Referring to FIGS. 29-31, in this embodiment, the driving side developing cover 34 is further provided with a pushing receiving block 420 and a pushing elastic member 410, and the first movable member 120 is further provided with a pushing action part 120b; the pushing receiving block 420 is slidably arranged on the driving side developing cover 34, and the two ends of the pushing elastic member 410 are connected with the pushing receiving block 420 and the driving side developing cover 34 respectively; under the action of the gravity of the gravity block 120a, the first movable member 120 exerts a pushing force on the pushing receiving block 420 by the pushing action part 120b, the pushing receiving block 420 moves relative to the driving side developing cover 34 in the N7 direction, so that the pushing elastic member 410 deforms, and the elastic force of the pushing elastic member 410 acts on the driving side developing cover 34, thereby acting on the developing cartridge, so that the developing roller 13 can be closer to the photosensitive drum 10, and the contact between the two is more closely. In this embodiment, the pushing elastic member 410 is preferably a spring.

[0179] When the developing cartridge is installed into the image forming apparatus, the developing roller 13 of the developing cartridge contacts the photosensitive drum 10 of the drum assembly, the driving side device pressing member 150 is triggered by the closing of the cover of the image forming apparatus, moves in the N7 direction, acts on the driving side detection member 70, so that the first movable member 120 moves in the N7 direction to the non-recognized position. Then the device main body detects the installation of the developing cartridge, the driving side device pressing member 150 moves in the N8 direction, drives the first movable member 120 to move in the N8 direction to the recognized position, triggers the detection signal, and then the driving side device pressing member 150 moves in the N7 direction, and under the action of the gravity block 120a, the first movable member 120 resets in the N7 direction to the non-recognized position. Thus, the detection signal is triggered once or more to realize the recognition. In the above process, since the first movable member 120 will be subjected to the action force in the N8 direction, it may cause a certain shaking of the developing cartridge, even when the first movable member 120 resets in the N7 direction to the non-recognized position, the developing roller 13 may not be in close contact with the photosensitive drum 10 due to the shaking, and by setting the pushing receiving block 420 and the pushing elastic member 410 in cooperation with the gravity block 120a, the close contact between the developing roller 13 and the photosensitive drum 10 can be further ensured.

[0180] Embodiment eight

[0181] Referring to FIG. 32, the eighth embodiment is substantially the same as the seventh embodiment, except that the setting position of the gravity block 120a is different. In the eighth embodiment, the gravity block 120a is arranged at the lower part of the first movable member 120, and specifically arranged on the driving-side detection member 70. The working principle is similar to that of the seventh embodiment. When the first movable member 120 moves in the N8 direction and moves upward under the action of the driving-side device pressing member 150, the gravity block 120a moves upward and stores the gravitational potential energy. When the detection signal is triggered, the driving-side device pressing member 150 moves in the N7 direction, and the gravity block 120a releases the gravitational potential energy and moves downward. Through the shape of the chute, the force in the gravity direction is converted into the force in the front-back direction (specifically the N7 direction), so that the first movable member 120 is reset from the recognition position to the non-recognition position.

[0182] Further in the eighth embodiment, the inclination of the chute 34a near the N8 direction side can be increased to increase the gravitational potential energy of the gravity block 120a, so that the first movable member 120 can return to the non-recognition position more smoothly.

[0183] The gravity block 120a of the eighth embodiment is arranged on the driving-side detection member 70, which can reduce the volume of the first movable member 120 and is beneficial to the miniaturization of the developer cartridge. In other embodiments, the gravity block 120a can also be arranged at other positions of the first movable member 120.

[0184] Ninth Embodiment

[0185] Referring to FIG. 33, the ninth embodiment is different from the seventh embodiment in that the ninth embodiment does not arrange the gravity block 120a, but resets the first movable member 120 through the magnetic force of a magnet.

[0186] Specifically, the first magnet 510 is arranged on the first movable member 120, and the second magnet 520 is arranged on the driving-side developing-side cover 34. The second magnet 520 can be arranged on the side of the driving-side developing-side cover 34 away from the developing roller 13, i.e., the second magnet 520 is closer to the N8 direction on the driving-side developing-side cover 34 (relative to the N7 direction). The first magnet 510 and the second magnet 520 repel each other, thereby generating a force to reset the first movable member 120 in the N7 direction.

[0187] Further, the third magnet 530 is arranged on the driving-side developing-side cover 34, which replaces the pushing-receiving block 420 and the pushing elastic member 410 in the seventh embodiment, thereby reducing the structural components. The working principle of the third magnet 530 is similar to that of the seventh embodiment. The third magnet 530 repels the first magnet 510, and the magnetic force of the third magnet 530 acts on the driving-side developing-side cover 34 in the N7 direction, thereby acting on the developer cartridge, so that the developing roller 13 can be closer to the photosensitive drum 10, and the contact between the two is more close.

[0188] Example Ten

[0189] This embodiment is similar to Example Six, except that the third support member 160a has a different shape. Instead of using a spring structure, the third support member 160a is deformed by its shape, thereby generating an elastic force to urge the developing cartridge B to move toward the photosensitive drum 10.

[0190] Referring to FIGS. 34-36, in this embodiment, the third support member 160a includes a connecting portion 16a5, a positioning portion 16a6, and a deformed portion 16a7. The connecting portion 16a5 is fixedly connected to the developing frame (in this embodiment, to the developing container 16). The positioning portion 16a6 is used to abut against the device main body Al, thereby positioning the third support member 160a by the device main body Al. In this embodiment, the position at which the device main body Al abuts against the positioning portion 16a6 is referred to as the positioned portion Ala. The deformed portion 16a7 has a connecting end 16a71 and a free end 16a72. The connecting end 16a71 is fixedly connected to the connecting portion 16a5 and the positioning portion 16a6, respectively. The free end 16a72 is used to abut against the device main body Al, thereby deforming the deformed portion 16a7 under the action of the device main body Al, and urging the developing cartridge to be positioned at the contact position at which the developing roller 13 contacts the photosensitive drum 10. In this embodiment, the position at which the device main body Al abuts against the free end 16a72 of the deformed portion 16a7 is referred to as the abutted portion Alb.

[0191] Specifically, when the developing cartridge is not installed, the distance between the free end 16a72 of the deformed portion 16a7 and the positioning portion 16a6 is Dl, and the distance between the positioned portion Ala and the abutted portion Alb of the device main body Al is D2. Dl is less than D2. When the developing cartridge is installed, because Dl is less than D2, when the deformed portion 16a7 and the positioning portion 16a6 of the third support member 160a are installed at the abutted portion Alb and the positioned portion Ala of the device main body Al, the deformed portion 16a7 and the positioning portion 16a6 are spread apart, causing the deformed portion 16a7 to deform, thereby generating an elastic force F in the clockwise direction (with reference to the direction in which the device main body looks toward the developing cartridge driving side, i.e., the clockwise direction shown in FIG. 36). Under the urging action of the elastic force F, the developing roller 13 of the developing cartridge is urged to move toward the photosensitive drum 10.

[0192] In this embodiment, the positioned portion Ala and the abutted portion Alb of the device main body Al are located close to the conveying guide 3d (see FIG. 3) in the device main body Al. In other embodiments, the positioned portion Ala and the abutted portion Alb can be located at other positions of the device main body Al, as long as similar effects can be achieved.

[0193] Further in the embodiment, the connecting portion 16a5 and the deforming portion 16a7 form a V-shaped structure, so that the deforming portion 16a7 is deformed. The tip 16a9 of the V-shaped structure faces outward (i.e., toward the outside of the developing cartridge B), and the third support member 160a further includes an extension portion 16a8 extending horizontally outward from the V-shaped structure. The positioning portion 16a6 is a positioning protrusion provided at the end of the extension portion 16a8, and the positioning protrusion is capable of being clamped on and abutting against the positioned portion A1a of the device main body A1. The V-shaped structure and the extension portion 16a8 have a configuration and structure that make the third support member 160a have higher structural strength, and the third support member 160a is capable of more stably supporting the developing cartridge.

[0194] Further in the embodiment, the third support member 160a has two, and the two third support members 160a are fixed at one side of the developing container 16. One of the two third support members 160a is close to the driving side, and the other third support member 160a is close to the non-driving side, so that the developing cartridge B is kept balanced. Specifically, the third support member 160a is provided at one end of the developing container 16 close to the developing roller 13 in the front-rear direction, i.e., at the end toward N7, and below the developing roller 13. When viewed along the axis direction of the developing roller 13, at least a portion of the third support member 160a is located between the rotation axis of the developing roller 13 and the rotation axis of the coupling member 180, i.e., when viewed from the side of the developing cartridge in the state that the developing cartridge is installed in the device main body, a vertical line L3 is drawn through the rotation center of the developing roller 13, and a vertical line L4 is drawn through the rotation center of the coupling member 180, and at least a portion of the third support member 160a is located between L3 and L4. In other embodiments, the third support member 160a can also be one or more than two, and is fixed at other positions of the developing cartridge, such as the driving-side developing-side cover 34 and / or the non-driving-side developing-side cover 46.

[0195] Embodiment Eleven

[0196] FIGS. 37 and 38 schematically show a developing cartridge B according to an embodiment of the present application. For convenience of description, the width direction of the developing cartridge B is defined as the second direction (Y direction), the length direction of the developing cartridge B is defined as the first direction (X direction), and the height direction of the developing cartridge B is defined as the third direction (Z direction); the X axis, the Y axis, and the Z axis are orthogonal to each other. The mounting direction of the developing cartridge B from the outside to the image forming apparatus is defined as the Y1 direction, and the dismounting direction is defined as the Y2 direction. The Y1 direction is also the front end of the developing cartridge B, and the Y2 direction is also the rear end. The developing cartridge B has a driving end and a conductive end in the length direction (X direction). The driving end is located at the X1 direction side of the developing cartridge B, and the conductive end is located at the X2 direction side opposite to the driving end. The Z1 direction end of the developing cartridge B is also referred to as the upper end, and the Z2 direction end is also referred to as the lower end.

[0197] As shown in FIGS. 37-40, the developing cartridge B includes a developing frame 11, a cover, a developing roller 13, a powder outlet blade 3, a stirring frame (not shown), an electrode 4, a chip, and a driving assembly.

[0198] As shown in FIGS. 37 and 38, the developing frame 11 is generally in the shape of a long box, enclosing a powder bin for storing carbon powder (an example of a developer), the cover includes a driving end cover 14 and a conductive end cover 12, the driving end cover 14 is arranged outside the end surface of the driving end of the developing frame 11, and the conductive end cover 12 is arranged outside the end surface of the conductive end of the developing frame 11.

[0199] As shown in FIGS. 37-39, the developing roller 13 is rotatably supported on the developing frame 11, specifically, the axis direction of the developing roller 13 is consistent with the length direction of the developing frame 11 (i.e., along the X direction), and in the Y direction, the developing roller 13 is located at the front end (Y1 direction end) of the developing frame 11. The developing roller 13 includes a developing roller shaft 13a and a rubber roller body, and the developing roller shaft 13a can be made of a metal conductive material. The driving end of the developing frame 11 is provided with a shaft sleeve hole 16c, and a shaft sleeve 16d is arranged in the shaft sleeve hole 16c. The shaft sleeve 16d rotatably supports the developing roller 13, and is fixedly arranged in the shaft sleeve hole 16c and can be fixed by means of pasting, clamping, welding, etc. In this embodiment, the shaft sleeve hole 16c and the shaft sleeve 16d are clamped and connected by the protrusion 1121 and the clamping groove 1111, and the developing roller shaft 13a is arranged in the shaft sleeve 16d, so as to realize the support of the shaft sleeve 16d to the developing roller 13. Through such arrangement, the wear resistance of the position where the developing roller 13 contacts the developing frame 11 can be enhanced, so as to ensure that the shaft sleeve 16d is not severely worn in position when the developing roller 13 rotates under force, and to reduce the risk of printing whitening due to deformation of the position. As shown in FIG. 40, the conductive end of the developing cartridge B is provided with a conductive shaft sleeve 123 for supporting the conductive end of the developing roller shaft 13a. The conductive shaft sleeve 123 can be fixedly arranged on the inner side of the conductive end cover 12, and the conductive shaft sleeve 123 can be made of a conductive material.

[0200] As shown in FIGS. 37-40, the powder outlet blade 3 is mounted on the developing frame 11, and a part of the powder outlet blade 3 is in linear contact with the surface of the developing roller 13, for controlling the thickness of the developer layer attached to the developing roller 13, so as to ensure the uniformity of the developer transferred by the developing roller 13. Specifically, the powder outlet blade 3 includes a blade holder and a blade, the blade is mounted on the blade holder and is fixedly arranged on the developing frame 11 together with the blade holder, the blade holder can be made of a metal conductive material, the blade can be made of rubber material or metal material, and a part of the blade is in linear contact with the surface of the roller body of the developing roller 13.

[0201] As shown in FIG. 38 and FIG. 40, the electrode 4 is arranged at the electrically conductive end of the developing frame 11, and specifically can be mounted at the inner side of the electrically conductive end cover 12. The electrode 4 includes an electrode contact 41 configured to electrically connect with an electric output of the image forming device to receive a voltage. The electrode contact 41 is exposed outside the electrically conductive end cover 12, and specifically, the electrode contact 41 protrudes from the outer side wall (the side wall in the X2 direction) of the electrically conductive end cover 12. The electrode 4 is electrically connected with one end (the end in the X2 direction) of the developing roller 13 in the length direction, and also electrically connected with one end (the end in the X2 direction) of the powder outlet blade 3 in the length direction, so that the electrode 4 supplies the voltage received through the electrode contact 41 to the developing roller 13 and the powder outlet blade 3. Specifically, the electrode 4 includes a first contact portion 42 and a second contact portion 43. The first contact portion 42 is in contact with the electrically conductive shaft sleeve 123 to transmit the voltage to the developing roller shaft 13a through the electrically conductive shaft sleeve 123. The second contact portion 43 is in contact with the powder outlet blade 3 to transmit the voltage.

[0202] The electrode 4 can be a conductive steel sheet, and the electrode 4 can be fixed on the electrically conductive end cover 12 by clamping, sticking or the like. The electrode contact 41 is a part of the conductive steel sheet, and the first contact portion 42 and the second contact portion 43 are also parts of the conductive steel sheet. Preferably, the electrode 4 is mounted on the electrically conductive end cover 12 by clamping. The electrode 4 is provided with a clamping structure, and a substantially semi-enclosing body structure 44 with one end open is formed on the electrode 4. The semi-enclosing body structure 44 is embedded in a groove provided at the inner side of the electrically conductive end cover 12, and one or more sides of the semi-enclosing body structure 44 are provided with elastic buckles 45 (such as elastic arms). The side wall of the groove is provided with clamping grooves matched with the elastic buckles 45, so that the electrode 4 is clamped and fixed at the inner side of the electrically conductive end cover 12.

[0203] Further, the electrode 4 is also provided with a structure matched with the electrically conductive end cover 12. Specifically, at least one positioning hole 49 is provided on the electrode 4, which is matched with the positioning shaft 122 at the inner side of the electrically conductive end cover 12 to achieve the positioning effect. Alternatively, another positioning structure is provided on the electrode 4. A second through hole 517 is provided on the electrode 4, and a positioning elastic sheet 48 is provided on the side of the second through hole 517. The positioning elastic sheet 48 is provided with two sheets and oppositely arranged, and a passage is formed between the two positioning elastic sheets 48 for the positioning shaft 122 to pass through. During assembly, the positioning shaft 122 passes through the passage between the two positioning elastic sheets 48, and the two positioning elastic sheets 48 are tightly pressed against the outer surface of the positioning shaft 122 under the action of the elastic force, so as to achieve the positioning effect and prevent the electrode 4 from dislocating on the electrically conductive end cover 12.

[0204] In some other embodiments, the electrode 4 can also be a secondary injection molded conductive material on the electrically conductive end cover 12.

[0205] The stirring frame is rotatably supported on the developing frame 11 and located in the powder bin. Specifically, both ends of the stirring frame are supported on the end face of the driving end of the developing frame 11 and the end face of the conductive end. The length direction of the stirring frame is consistent with the length direction of the developing frame 11. The stirring frame can rotate circumferentially along the axis in the length direction thereof. The stirring frame can have one or more blades. The blades are driven to stir the developer in the powder bin by rotation, thereby preventing the developer in the powder bin from caking. At the same time, the developer can also be transported to the direction of the developing roller 13, so that the developer is adsorbed by the charged developing roller 13.

[0206] The chip is arranged on the conductive end cover 12 and specifically located at the end of the conductive end cover 12 close to the axis of the developing roller 13 in the width direction (Y1 direction end). The chip is located more forward than the axis of the developing roller 13 in the second direction. The chip stores information about the developing cartridge B. The chip is provided with chip contacts configured to be electrically connected to the image forming apparatus to establish communication between the chip and the image forming apparatus, so that the image forming apparatus can acquire and identify the information about the developing cartridge B. As shown in FIG. 37, the conductive end cover 12 is provided with a chip mounting seat 121 on the end close to the axis of the developing roller 13 in the width direction, for mounting the chip. When the chip is mounted in the mounting seat, the chip contacts face away from the conductive end cover 12.

[0207] As shown in FIGS. 37, 39, 41 to 44, the driving assembly is arranged at the driving end of the developing frame 11. The driving assembly includes a power receiving member 51, a driving gear 52, a developing gear 53, and a stirring gear 54. The developing gear 53 is arranged at the driving end of the developing roller shaft 13a, and the stirring gear 54 is arranged at the driving end of the stirring frame shaft. The outer circumferential surface of the driving gear 52 is provided with teeth. The teeth directly or indirectly engage with the developing gear 53 and the stirring gear 54, that is, when the driving gear 52 rotates, the developing roller 13 and the stirring frame can be driven to rotate through the engagement relationship between the gears. The X1 direction end of the driving gear 52 is recessed to form a receiving cavity. The driving gear 52 is arranged at the driving end and rotatably supported by the driving end cover 14. Specifically, the inner side of the driving end cover 14 is provided with a support portion, which is a first annular protrusion 141 protruding from the inner wall of the driving end cover 14. The first annular protrusion 141 is matched with a second annular protrusion 521 at the X1 direction end of the driving gear 52. When assembled, the first annular protrusion 141 and the second annular protrusion 521 are nested with each other, so that the driving end cover 14 forms a support for the driving gear 52.

[0208] In some other embodiments, as shown in FIGS. 45 and 46, the drive gear 52 can no longer be supported by the drive end cover 14, but instead be supported by the developing frame 11. Specifically, the end face of the drive end of the developing frame 11 is provided with a support portion, which is a third annular protrusion 113 extending along the X1 direction. The X2 direction end of the drive gear 52 is provided with a fourth annular protrusion 522 extending along the X2 direction. When assembled, the third annular protrusion 113 and the fourth annular protrusion 522 are nested with each other, so that the developing frame 11 forms support for the drive gear 52. When the drive gear 52 is supported on the developing frame 11, there is a gap between the drive gear 52 and the drive end cover 14, i.e., the drive gear 52 does not contact the drive end cover 14 when rotating.

[0209] Further, as shown in FIGS. 41 and 43, the receiving cavity of the drive gear 52 is provided with a first sliding groove 523 extending along the radial direction of the drive gear 52. The middle portion of the groove bottom of the first sliding groove 523 is provided with a first through hole 524 extending through the drive gear 52 in the axial direction. When viewed in the axial direction, the first through hole 524 is an elongated hole, and the length direction of the first through hole 524 is consistent with the extension direction of the first sliding groove 523.

[0210] As shown in FIGS. 42 to 43, the power receiving member 51 is used to engage with the drive head of the image forming device to receive driving force. The power receiving member 51 includes force receiving protrusions 511, a connecting portion 16a5, a sliding portion 513, and an abutting portion 514. The force receiving protrusions 511 are provided in two, and the two force receiving protrusions 511 are arranged symmetrically about the center of the power receiving member 51. The line connecting the two force receiving protrusions 511 is L1. The two force receiving protrusions 511 are respectively used to abut against two transmission pins of the drive head, so as to receive the driving force of the drive head to rotate. The connecting portion 16a5 is a rod-shaped member connected to the X2 direction end of the force receiving protrusions 511. The abutting portion 514 and the sliding portion 513 are both arranged on the connecting portion 16a5, and the abutting portion 514 is located between the sliding portion 513 and the force receiving protrusions 511. The abutting portion 514 is a circular ring-shaped plate, and the axis position of the abutting portion 514 coincides with the center axis position of the connecting portion 16a5. The sliding portion 513 is substantially a cuboid-shaped protrusion, and the length direction of the sliding portion 513 is parallel to the line L1. When the power receiving member 51 is installed into the drive gear 52, the connecting portion 16a5 passes through the first through hole 524, and the sliding portion 513 is accommodated in the first sliding groove 523, and the two sides of the sliding portion 513 respectively abut against two first groove walls 5231 of the first sliding groove 523, so that the power receiving member 51 forms a transmission relationship with the drive gear 52. When the power receiving member 51 receives the driving force to rotate, it can drive the drive gear 52 to rotate. The X2 direction end of the connecting portion 16a5 can further be provided with a buckle 5121, which can be engaged with the first through hole 524, so as to prevent the power receiving member 51 from being separated outward from the drive gear 52.

[0211] As shown in FIG. 44, the driving end cover 14 is provided with a sliding hole 142, and the force receiving protrusion 511 of the power receiving member 51 extends out of the sliding hole 142 to expose outside the driving end cover 14, so as to facilitate engagement with the driving head. The sliding hole 142 is a strip-shaped hole, and the extension direction of the sliding hole 142 is along the Y direction. The power receiving member 51 can move along the Y direction in the sliding hole 142.

[0212] Further, as shown in FIGS. 44, 47, 49 and 51, the driving end cover 14 is provided with a limiting portion for limiting movement of the power receiving member 51 along the mounting direction (Y1 direction) and along a third direction perpendicular to the mounting direction. The limiting portion includes a first limiting wall 143 which is protrudingly arranged and located within the range of the first ring protrusion 141 and protrudes from the inner wall of the driving end cover 14 along the X2 direction. The first limiting wall 143 is located on one side of the power receiving member 51 along the mounting direction (Y1 direction) and can abut against the abutting portion 514 of the power receiving member 51 to limit movement of the power receiving member 51 along the Y1 direction. Further, the limiting portion further includes a second limiting wall 144 which is protrudingly arranged and located on one side or both sides of the power receiving member 51 along the third direction (Z direction) perpendicular to the mounting direction (Y1 direction), i.e. the second limiting wall 144 abuts against the lower side (Z2 direction side) of the abutting portion 514 of the power receiving member 51 or the upper and lower sides (Z1 and Z2 direction sides) of the abutting portion 514, so as to limit movement of the power receiving member 51 along the Z direction. The limiting portion is arranged to limit the position of the power receiving member 51. When the gap matching amount between the power receiving member 51 and the limiting portion is within the range of 0-0.1 mm, the power receiving member 51 can normally engage with the driving head of the image forming device. At this time, the position of the power receiving member 51 is also referred to as the initial position. If the gap matching amount exceeds the range, the power receiving member 51 is prone to relatively shake when engaging with the driving head, which affects the quality of the printed manuscript.

[0213] As shown in FIGS. 37, 48 and 50, the limiting portion can only limit movement of the power receiving member 51 along the Y1 direction and the Z direction, and cannot limit movement of the power receiving member 51 along the Y2 direction. The developing cartridge B further includes an elastic member 16a3 which is supported on the driving end cover 14 and abuts against the power receiving member 51. Specifically, the elastic member 16a3 is a torsion spring, the driving end cover 14 is provided with a supporting column, the torsion spring is sleeved on the supporting column, and one arm of the torsion spring abuts against the connecting portion 16a5 of the power receiving member 51, and the other arm abuts against the driving end cover 14. In the state without external force, the elastic member 16a3 is configured to make the power receiving member 51 be in the initial position. When the power receiving member 51 moves along the direction opposite to the mounting direction (Y2 direction) under the action of force, the elastic member 16a3 is twisted and deformed to generate a force which can make the power receiving member 51 move along the mounting direction (Y1 direction).

[0214] During the process of installing the developing cartridge B to the image forming device along the installing direction (Y1 direction), the power receiving member 51 has two cases.

[0215] The first case: as shown in FIG. 48 and FIG. 49, the power receiving member 51 is in the first state, i.e. the included angle between the connecting line L1 of the two force receiving protrusions 511 and the installing direction (Y1 direction) is less than or equal to 45°, the force receiving protrusions 511 of the power receiving member 51 cannot engage with the driving pin of the driving head, and the force receiving protrusions 511 will interfere with the driving head. Taking the case that the connecting line L1 is parallel to the installing direction, i.e. the included angle is 0°, as an example, during the process of installing the developing cartridge B to the image forming device along the installing direction (Y1 direction), the connecting line L1 and the extending direction of the first sliding groove 523 are parallel to the Y direction, the power receiving member 51 interferes with the driving head and is pushed to move in the first sliding groove 523 relative to the driving gear 52 in the direction opposite to the installing direction (Y2 direction), i.e. the sliding part 513 moves along the first sliding groove 523, the connecting part 16a5 moves along the sliding hole 142 and the first through hole 524, to avoid the driving head and avoid hard collision between the two to cause damage, and during the movement of the power receiving member 51, the elastic member 16a3 is twisted and deformed. After the driving head starts to rotate continuously, the power receiving member 51 moves to the initial position along the installing direction (Y1 direction) under the action of the elastic member 16a3, at this time the power receiving member 51 only translates and does not rotate, until the driving head rotates to the posture that can engage with the force receiving protrusions 511 of the power receiving member 51, the force receiving protrusions 511 complete the engagement with the rotating driving head.

[0216] The second case: as shown in FIG. 50 and FIG. 51, the power receiving member 51 is in the second state, i.e. the included angle between the connecting line L1 of the two force receiving protrusions 511 and the third direction (Z direction) perpendicular to the installing direction is less than 45°, and the included angle between the first sliding groove 523 and the third direction perpendicular to the installing direction is also less than 45°, the power receiving member 51 can directly engage with the driving head. Taking the case that the included angle between the connecting line L1 and the third direction is 0° (i.e. the connecting line L1 is perpendicular to the installing direction Y1) as an example, the power receiving member 51 is limited by the limiting part, and the first sliding groove 523 is perpendicular to the installing direction Y1, the sliding part 513 of the power receiving member 51 abuts against the two first groove walls 5231 of the first sliding groove 523 in the Y direction, the power receiving member 51 cannot move in the Y direction (cannot move in the installing direction Y1 and the direction opposite to the installing direction Y2), at this time the opening formed between the two force receiving protrusions 511 faces the driving pin of the driving head, and there is no interference between the driving pin and the power receiving member 51, i.e. the power receiving member 51 is just in the position that the force receiving protrusions 511 can normally engage with the driving head, and the developing cartridge B can be directly installed in place.

[0217] The embodiment sets the cooperation of the limiting portion, the sliding portion 513 and the first sliding groove 523 to limit the position of the power receiving member 51, so that the power receiving member 51 can only move in the direction opposite to the mounting direction (Y2 direction) when interfering with the drive head structure of the image forming device (i.e. when the power receiving member 51 is in the first state), and the power receiving member 51 is reset by the elastic member 16a3, and at this time, the drive head of the image forming device rotates around its own axis until the drive head rotates to a certain posture that can engage with the two force receiving protrusions 511 of the power receiving member 51, and the drive head and the power receiving member 51 complete engagement, the drive head transmits driving force to the power receiving member 51, and the power receiving member 51 retreats to avoid structural collision damage / wear of the drive head; if there is no structural interference between the power receiving member 51 and the drive head (i.e. when the power receiving member 51 is in the second state), the power receiving member 51 is limited from moving in the Y direction and the Z direction, and the force receiving protrusions 511 can directly engage with the drive head, which can reduce the engagement time.

[0218] Embodiment Twelve

[0219] The embodiment provides another developing cartridge B, which differs from the embodiment eleven in that the driving assembly further comprises a support seat 56.

[0220] As shown in FIGS. 52 to 54, in the embodiment, the support seat 56 is accommodated in the drive gear 52, the support seat 56 is a cylindrical substantially cylindrical member, the support seat 56 is accommodated in the recess 525 matched with the drive gear 52 inside, the circumferential outer surface of the support seat 56 is provided with a protrusion 561, and the inner wall of the recess 525 is provided with a notch portion 5251 matched with the protrusion 561. When assembled, the protrusion 561 is embedded in the notch portion 5251, so that the support seat 56 and the drive gear 52 form a transmission connection relationship, that is, the support seat 56 can drive the drive gear 52 to rotate together when rotating. The number of protrusions 561 and recesses 525 can be one or more, and the plurality of protrusions 561 and recesses are arranged in the circumferential direction.

[0221] As shown in FIG. 53, the X1 direction end of the support seat 56 is provided with a second sliding groove 562, the second sliding groove 562 extends in the radial direction of the support seat 56, and the groove bottom of the second sliding groove 562 is provided with a second through hole 563 penetrating in the axial direction. When viewed in the axial direction, the second through hole 563 is an elongated hole, and the length direction of the second through hole 563 is consistent with the extension direction of the second sliding groove 562.

[0222] The power receiving member 51 has the same structure as that of the eleventh embodiment, and thus will not be described again. When the power receiving member 51 is installed into the driving gear 52, the connecting portion 16a5 passes through the second through hole 563 of the support seat 56, the sliding portion 513 is accommodated in the second sliding groove 562, and the two sides of the sliding portion 513 abut against the two second groove walls 5621 of the second sliding groove 562, so that the power receiving member 51 forms a transmission relationship with the support seat 56, and further forms a transmission relationship with the driving gear 52. When the power receiving member 51 rotates to receive driving force, the support seat 56 is driven to rotate synchronously with the driving gear 52.

[0223] In the present embodiment, the limiting portion includes the first limiting wall 143 and the two second limiting walls 144 respectively located on the upper and lower sides of the power receiving member 51, that is, the movement of the power receiving member 51 in the forward (Y1 direction), upward (Z1 direction) and downward (Z2 direction) directions is limited. The gap between the first limiting wall 143, the second limiting wall 144 and the power receiving member 51 is in the range of 0-0.1 mm.

[0224] As shown in FIG. 55, the movement of the developing cartridge B in the installation process of the present embodiment is similar to that of the eleventh embodiment. When the power receiving member 51 is in the first state, the power receiving member 51 interferes with the driving head and is pushed to move in the direction (Y2 direction) opposite to the installation direction relative to the support seat 56 in the second sliding groove 562, that is, the sliding portion 513 moves along the second sliding groove 562, and the connecting portion 16a5 moves along the sliding hole 142 and the second through hole 563, to avoid the driving head. After the driving head starts to rotate continuously, the power receiving member 51 moves relative to the support seat 56 along the installation direction (Y1 direction) to the initial position under the action of the elastic member 16a3. At this time, the power receiving member 51 only moves in translation and does not rotate. Until the driving head rotates to a posture capable of engaging with the force receiving protrusion 511 of the power receiving member 51, the force receiving protrusion 511 and the rotating driving head complete engagement.

[0225] As shown in FIG. 56, when the power receiving member 51 is in the second state, the second sliding groove 562 is perpendicular to / intersects with the Y direction. The sliding portion 513 of the power receiving member 51 abuts against the two second groove walls 5621 of the second sliding groove 562 in the Y direction, and the power receiving member 51 cannot move in the Y direction (cannot move in the installation direction Y1 and the direction opposite to the installation direction Y2). At this time, the opening formed between the two force receiving protrusions 511 faces the transmission pin of the driving head, and there is no interference between the transmission pin and the power receiving member 51, that is, the power receiving member 51 is just in a position capable of normally engaging with the driving head. The developing cartridge B can be directly installed in place.

[0226] The other structures of the developing cartridge B of the present embodiment are the same as those of the eleventh embodiment, and thus will not be described again.

[0227] Embodiment Thirteen

[0228] This embodiment provides yet another developing cartridge B, the structure of the drive assembly is different compared with Embodiment Eleven and Embodiment Twelve.

[0229] As shown in FIG. 57, in this embodiment, the drive assembly includes a power receiving member 51, a drive gear 52, a gear cover 57, a slider seat 58, a slider 59, a connecting rod 60 and a circlip 61.

[0230] As shown in FIG. 57 and FIG. 58, the gear cover 57 is rotatably supported on the support portion of the developing frame 11, and the gear cover 57 is provided with a first engaging portion 571 extending along the X direction, and the first engaging portion 571 can be provided in plurality, and the plurality of first engaging portions 571 are spaced apart along the circumferential direction thereof; the inner wall of the drive gear 52 is provided with a second engaging portion 526 combined with the first engaging portion 571, and one of the first engaging portion 571 and the second engaging portion 526 is a buckle, and the other is a clamping groove, so that the drive gear 52 is connected with the gear cover 57, and the gear cover 57 and the drive gear 52 can rotate synchronously, so that the drive gear 52 is also rotatably supported on the developing frame 11.

[0231] As shown in FIG. 59 to FIG. 62, the slider seat 58 is generally a frame body structure, and the slider seat 58 is fixedly provided on the drive end cover 14. The slider seat 58 includes a base 581 and two oppositely arranged plate-shaped members 582 provided on the base 581, and the two plate-shaped members 582 are oppositely and spaced apart in the Z direction, and the side opposite to each other of the two plate-shaped members 582 is provided with a first rib 583 extending along the X direction, and the drive end cover 14 is provided with a first groove 135, and when assembled, the first rib 583 is embedded into the first groove 135, so that the movement of the slider seat 58 in the Y direction can be limited; alternatively, a first groove can be provided on the two plate-shaped members 582, and a first rib matched therewith can be provided on the drive end cover 14. The space between the two plate-shaped members 582 constitutes a receiving portion. The slider 59 is slidingly arranged in the receiving portion of the slider seat 58, and specifically, the side opposite to each other of the two plate-shaped members 582 is provided with a second rib 584 extending along the Y direction, and the slider 59 is provided with a second groove 591 extending along the Y direction, and when assembled, the second rib 584 is embedded into the second groove 591, so that the slider 59 can move relative to the slider seat 58 in the Y direction; alternatively, a second groove can be provided on the plate-shaped member 582, and a second rib matched therewith can be provided on the slider 59. Part of the slider seat 58 and the slider 59 are accommodated in the drive gear 52, and part of the slider seat 58 and the slider 59 are exposed outside the drive end cover 14, and the slider seat 58 and the slider 59 do not rotate with the drive gear 52.

[0232] As shown in FIGS. 60 and 61, the base 581 of the slider seat 58 is provided with a third through hole 585 penetrating in the axial direction (X direction), and the third through hole 585 is a strip-shaped hole, and the length direction of the third through hole 585 extends along the Y direction. The slider 59 is provided with a fourth through hole 592 penetrating in the axial direction (X direction), and the fourth through hole 592 is a circular hole, and the diameter of the circular hole is matched with the connecting portion 16a5 of the power receiving member 51, and in assembly, the connecting portion 16a5 of the power receiving member 51 is sequentially inserted into the driving gear 52 after passing through the fourth through hole 592 and the third through hole 585.

[0233] As shown in FIG. 57, the circumferential wall of the connecting portion 16a5 of the power receiving member 51 is provided with a third groove 515, and the third groove 515 is an annular groove, and the snap spring 61 is clamped in the annular groove, and is located on the X2 direction side of the base 581 of the slider seat 58, and can abut against the slider seat 58, and can prevent the power receiving member 51 from being pulled outwards.

[0234] As shown in FIGS. 57, 62 and 64, the power receiving member 51 is provided with a first through hole 516, and the first through hole 516 is located on the X2 direction side of the third groove 515, and the first through hole 516 penetrates the connecting portion 16a5 of the power receiving member 51 in the radial direction, and in the radial direction, the shape of the first through hole 516 is a strip-shaped hole extending in the axial direction.

[0235] As shown in FIGS. 57, 58, 62 and 63, the power receiving member 51 is in transmission connection with the driving gear 52 after passing through the first through hole 516 through the connecting rod 60, and specifically, the inner wall of the driving gear 52 is provided with a limiting groove 527, and the limiting groove 527 is provided with two, and the two limiting grooves 527 are centrally symmetrically arranged, and the connecting rod 60 is a crank member, and the connecting rod 60 passes through the first through hole 516, and the middle protruding part of the connecting rod 60 is located in the first through hole 516, and the two ends of the connecting rod 60 are placed in the limiting grooves 527 in the driving gear 52, so that the driving gear 52 is driven to rotate after the power receiving member 51 receives the driving force. The extension direction of the connecting rod 60 is parallel to the connecting line L1 of the force receiving protrusion 511.

[0236] As shown in FIG. 64, the inner side of the driving end cover 14 is provided with a limiting portion, and the limiting portion includes a first limiting wall 143, and the first limiting wall 143 is located on the Y1 direction side of the slider 59, and can limit the movement of the slider 59 relative to the slider seat 58 in the Y1 direction, and the two ends of the slider 59 in the Z direction abut against the plate-shaped member 582 of the slider seat 58, and also cannot move in the Z direction, that is, the slider 59 can only move in the Y2 direction. Since the power receiving member 51 passes through the fourth through hole 592 (circular hole) on the slider 59, the movement of the power receiving member 51 and the slider 59 is synchronous, but the power receiving member 51 will not drive the slider 59 to rotate.

[0237] As shown in FIGS. 62 and 63, the movement of the developing cartridge B in the process of installation is similar to that of Embodiment 11. When the power receiving member 51 is in the first state, in the process of installing the developing cartridge B into the image forming apparatus in the installation direction (Y1 direction), the extension directions of the connecting rod 60, the first through hole 516, and the line L1 are parallel to the Y direction or the included angle is less than 45°. The power receiving member 51 interferes with the driving head and is pushed to move together with the slider 59 relative to the slider seat 58 in the direction opposite to the installation direction (Y2 direction), that is, the connecting portion 16a5 moves along the third through hole 585, and the first through hole 516 moves relative to the connecting rod 60, to avoid the driving head and avoid hard collision between the two to cause damage. In the process of moving the power receiving member 51, the elastic member 16a3 is twisted and deformed. After the driving head starts to rotate continuously, the power receiving member 51 moves together with the slider 59 in the installation direction (Y1 direction) to the initial position under the action of the elastic member 16a3. At this time, the power receiving member 51 only moves horizontally and does not rotate until the driving head rotates to the posture where the force receiving protrusion 511 can engage with the driving head. The force receiving protrusion 511 and the rotating driving head complete engagement.

[0238] As shown in FIGS. 64 and 65, when the power receiving member 51 is in the second state, the extension directions of the first through hole 516 and the connecting rod 60 are perpendicular to the Y direction or the included angle is greater than 45°. The power receiving member 51 and the slider 59 cannot move in the Y direction (cannot move in the installation direction Y1 and the direction opposite to the installation direction Y2). At this time, the power receiving member 51 is just in the position where the force receiving protrusion 511 can normally engage with the driving head. The developing cartridge B can be directly installed in place.

[0239] The other structures of the developing cartridge B of the present embodiment are the same as those of Embodiment 11, which will not be described here.

[0240] Embodiment 14

[0241] The present application provides a developing cartridge B which can be detachably installed in a drum assembly of an image forming apparatus. The drum assembly is provided with a photosensitive drum. The length direction of the developing cartridge B on a horizontal plane is a first direction (X direction), the width direction of the developing cartridge B on the horizontal plane is a second direction (Y direction), and the vertical direction is a third direction (Z direction). The first direction, the second direction, and the third direction are perpendicular to each other. One end of the developing cartridge B in the second direction is a front end, and the other end is a rear end. One end of the developing cartridge B in the third direction is an upper end, and the other end is a lower end.

[0242] As shown in FIGS. 66 and 67, the present embodiment provides a developing cartridge B, which includes a developing frame, a developing roller 13, a stirring frame (not shown), a driving assembly, and a contact action assembly.

[0243] As shown in FIGS. 66 and 67, the developing frame includes a cartridge body 210, a conductive end cover 12 and a driving end cover 14. The developing cartridge has a driving end and a conductive end in the length direction of the cartridge. The cartridge body 210 has a powder reservoir inside which can contain a developer, which can be toner. The driving end of the cartridge body 210 is provided with a support portion 211. The driving end cover 14 is arranged on the end surface of the support portion 211 of the cartridge body 210, and the conductive end cover 12 is arranged on the end surface of the conductive end of the cartridge body 210, i.e. the conductive end cover 12 and the driving end cover 14 are respectively located outside the two ends of the cartridge body 210 in the length direction.

[0244] As shown in FIGS. 66 and 67, the developing roller 13 is rotatably supported on the developing cartridge. Specifically, the length direction of the developing roller 13 is consistent with the length direction of the developing cartridge B, and the rotation axis of the developing roller 13 extends along the length direction of the developing cartridge B. The two ends of the developing roller 13 are respectively supported on the support portion 211 and the conductive end cover 12. The developing roller 13 is located at the front end of the developing cartridge B in the width direction.

[0245] The stirring frame is rotatably supported on the developing cartridge and located inside the powder reservoir of the cartridge body 210. Specifically, the length direction of the stirring frame is consistent with the length direction of the developing cartridge, and the stirring frame can rotate circumferentially along the axis in the length direction thereof. The stirring frame can have one or more blades, which are driven to stir the developer in the powder reservoir by rotation, thereby preventing the developer in the powder reservoir from caking and also conveying the developer to the direction of the developing roller 13 to be adsorbed by the charged developing roller 13.

[0246] As shown in FIG. 66, the driving assembly is arranged outside the support portion 211 (on the side facing away from the cartridge body 210) and includes a power receiving member 51 and a gear set. The power receiving member 51 is used to receive the driving force of the image forming device and transmit the driving force through the gear set, thereby driving the developing roller 13 and the stirring frame to rotate. The gear set includes a developing roller gear 29 and a stirring frame gear. The developing roller gear 29 is fixed to one end of the shaft of the developing roller 13 in the length direction and located outside the support portion 211. The developing roller gear 29 is engaged with the power receiving member 51, so that the developing roller 13 can receive the driving force to rotate. The stirring frame gear is fixed to one end of the stirring frame in the length direction and located outside the cartridge body 210. The stirring frame gear is engaged with the power receiving member 51, so that the stirring frame can receive the driving force to rotate. The developing roller gear 29 and the stirring frame gear can be directly or indirectly engaged with the power receiving member 51.

[0247] The electrode assembly is arranged at the conductive end of the developing cartridge and located inside the conductive end cover 12. The conductive end cover 12 is provided with an opening, and at least a part of the electrode assembly can be exposed from the opening, so as to be electrically connected with the image forming device. The electrode assembly is also electrically connected with the other end of the developing roller 13 in the length direction, so that the developing roller 13 is charged and can adsorb the developer.

[0248] As shown in FIGS. 66-72, the contact action assembly can receive the force from the image forming device when the developing cartridge B is installed and is working, and can drive the developing cartridge B to move towards the photosensitive drum to make the developing roller 13 contact with the photosensitive drum. The contact action assembly can be arranged at the driving end of the developing cartridge, or can be arranged at the conductive end of the developing cartridge B, or can be arranged at both the driving end and the conductive end of the developing cartridge B.

[0249] In the embodiment, the contact action assembly is arranged at both the driving end and the conductive end, and the contact action assembly arranged at the driving end can have the same structure as the contact action assembly arranged at the conductive end, or can have a different structure. In the embodiment, two groups of contact action assemblies with different structures are taken as examples for illustration.

[0250] As shown in FIGS. 66-71, in the embodiment, the contact action assembly arranged at the driving end includes a first movable member 120 and a first elastic member 260. The first movable member 120 is arranged at the driving end cover 14 and can move under the force from the image forming device. The first movable member 120 in the embodiment corresponds to the driving side contact / spacing rod in the prior art.

[0251] As shown in FIGS. 66-71, the first movable member 120 is rotatably connected inside the driving end cover 14. The first movable member 120 includes a first connecting portion 251, an arm portion 252, a sliding portion 513, a first rod portion 254, and a first matching portion 255. The upper end inside surface of the driving end cover 14 is provided with a first rotating shaft 2131. The first movable member 120 is rotatably connected to the first rotating shaft 2131 through the first connecting portion 251. The first connecting portion 251 is a hole structure matched with the first rotating shaft 2131. The first rotating shaft 2131 is the rotation center of the first movable member 120. When viewed along the length direction, the rotation center is located outside the powder tank. The rotation center is located above the powder tank, i.e., when viewed along the length direction, the rotation center has no overlapping part with the powder tank. The first connecting portion 251 is arranged at one end of the arm portion 252. In the embodiment, the arm portion 252 is located substantially outside the edge of the driving end cover 14 except for the end provided with the first connecting portion 251. The end of the arm portion 252 away from the first connecting portion 251 is provided with a first branch arm 2521 and a second branch arm 2522. The first branch arm 2521 and the second branch arm 2522 intersect with the arm portion 252 and extend substantially along the width direction towards the developing roller 13. The first branch arm 2521 and the second branch arm 2522 are arranged at intervals along the length direction, and the first branch arm 2521 is closer to the cartridge body 210 than the second branch arm 2522, i.e., the first branch arm 2521 extends inside the driving end cover 14, and the second branch arm 2522 extends outside the driving end cover 14. The first branch arm 2521 extends substantially to the middle position of the driving end cover 14 in the width direction, and the sliding portion 513 is arranged at the end of the first branch arm 2521 close to the developing roller 13.

[0252] Further, as shown in FIG. 68 and FIG. 69, the inner side of the driving end cover 14 is provided with a first abutting portion 2132, which is a convex rib structure protruding in the direction close to the cartridge body 210, and the upper end surface of the first abutting portion 2132 is a first abutting surface 2132a, which is a segment of an arc surface with the rotation center (first rotation shaft 2131) as the center. The lower end surface of the sliding portion 513 is provided as a second abutting surface 2531 abutting against the first abutting surface 2132a, which is an arc surface matching the curvature of the first abutting surface 2132a, so that the first movable member 120 can move in a predetermined direction along the first abutting surface 2132a.

[0253] As shown in FIG. 68, FIG. 69 and FIG. 71, one end of the first rod portion 254 is connected to the sliding portion 513, and the other end extends downward to the edge position of the lower end of the driving end cover 14 in the height direction. The first engaging portion 255 is provided at the other end of the first rod portion 254, and the first engaging portion 255 does not protrude from the developing cartridge B, and a part of the first engaging portion 255 abuts against the lower end surface of the driving end cover 14, which can prevent the first movable member 120 from being pulled out upward. The first engaging portion 255 is used to cooperate with the driving side device pressing member 150 of the image forming apparatus to receive the force. The first engaging portion 255 has a substantially hook-shaped structure in the second direction.

[0254] As shown in FIG. 66 and FIG. 70, the second branch arm 2522 is provided with a detected piece 256 at the end close to the developing roller 13, which is used to complete the machine recognition with the image forming apparatus when the developing cartridge B is installed. The detection structure is located outside the driving end cover 14, and when the first movable member 120 moves along the first abutting surface 2132a, the detected piece 256 can trigger the detection mechanism in the image forming apparatus, so that the image forming apparatus completes the recognition of the developing cartridge B. The detected piece 256 is a substantially long strip-shaped protrusion, and the length direction of the detected piece 256 extends in the width direction.

[0255] In this embodiment, the arm portion 252, the first branch arm 2521, the second branch arm 2522, the sliding portion 513, the first rod portion 254, the first engaging portion 255 and the detected piece 256 are preferably an integral molding structure, and can also be a split structure.

[0256] As shown in FIGS. 68 and 69, the first elastic member 260 is arranged inside the driving end cover 14, one end of the first elastic member 260 is connected to the first movable member 120, and the other end is connected to the driving end cover 14. Specifically, the first elastic member 260 is a tension spring, is arranged at the front side of the sliding portion 513 of the first movable member 120 (closer to the developing roller 13 than the sliding portion 513), and the inside of the driving end cover 14 is provided with a first connecting block 2133. The front end of the sliding portion 513 is provided with a second connecting block 2532, and the two ends of the first elastic member 260 are respectively connected between the first connecting block 2133 and the second connecting block 2532. The first elastic member 260 is arranged to remain in the initial position in the state that the first movable member 120 is not subjected to external force.

[0257] As shown in FIGS. 68 and 69, in the present embodiment, the developing cartridge B is further provided with a buffer assembly, the buffer assembly is arranged inside the driving end cover 14, and the buffer assembly includes a reset member 241 and a pushing member 242. The pushing member 242 is rotationally arranged inside the driving end cover 14, includes a first branch rod 2421 and a second branch rod 2422 arranged at an intersection, and the end of the first branch rod 2421 away from the intersection end is provided with a shaft hole. The pushing member 242 is rotationally connected to the support shaft 2134 provided at the position close to the upper end of the driving end cover 14 through the shaft hole, the support shaft 2134 is located below the first rotating shaft 2131, the first branch rod 2421 extends substantially downward, the second branch rod 2422 extends substantially in the width direction away from the developing roller 13, and the end of the second branch rod 2422 away from the intersection end is provided with a pushing protrusion 2422a. The first movable member 120 is provided with a pushed protrusion 2521a, the pushing protrusion 2422a abuts against the pushed protrusion 2521a, and the pushing protrusion 2422a is closer to the developing roller 13 than the pushed protrusion 2521a. The pushed protrusion 2521a can be arranged on the first branch arm 2521. The reset member 241 is connected between the pushing member 242 and the driving end cover 14. The pushing member 242 is provided with a third connecting block 2423 at the position close to the intersection end of the first branch rod 2421 and the second branch rod 2422. The driving end cover 14 is provided with a fourth connecting block 2135, and the fourth connecting block 2135 is farther away from the developing roller 13 than the third connecting block 2423. The two ends of the reset member 241 are respectively connected to the third connecting block 2423 and the fourth connecting block 2135. The reset member 241 is preferably a tension spring, and the force of the reset member 241 can keep the pushing protrusion 2422a abutting against the pushed protrusion 2521a. When the first movable member 120 receives the force of the driving side device pressing member 150 and moves in the direction close to the developing roller 13, the pushing member 242 is pushed to rotate around the support shaft 2134, the reset member 241 is stretched, and the pushing member 242 is reset under the action of the reset member 241 when the imaging device is removed. The purpose of arranging the buffer assembly is to adjust the pressure of the developing roller 13 on the photosensitive drum when the developing roller 13 and the photosensitive drum are in contact to improve the developing quality.

[0258] As shown in FIG. 66 and FIG. 72, in the present embodiment, the contact assembly provided at the conductive end includes a second movable member 270 and a second elastic member 34i2. The second movable member 270 is rotationally arranged inside the conductive end cover 12. The second movable member 270 includes a second connecting portion 271, a second rod portion 272 and a second cooperating portion 273 which are sequentially connected. The conductive end cover 12 is provided with a second rotating shaft 2121 at a position close to the upper end. The second connecting portion 271 is rotationally connected to the second rotating shaft 2121. The second connecting portion 271 is provided as a hole portion, i.e., the second rotating shaft 2121 is the rotation center of the second movable member 270. As viewed in the length direction, the rotation center (the second rotating shaft 2121) is located outside the powder reservoir. The rotation center is located above the powder reservoir, i.e., as viewed in the length direction, the rotation center does not overlap with the powder reservoir. The second rod portion 272 extends downward along the height direction to a position close to the lower edge of the conductive end cover 12, i.e., the second rod portion 272 spans the entire powder reservoir from top to bottom. The second rod portion 272 is a force arm. The provision of a longer force arm can reduce the force of the conductive-side device pressing member acting on it, so that the second movable member 270 is less likely to be damaged. The second cooperating portion 273 is connected to the lower end of the second rod portion 272. The second cooperating portion 273 does not protrude from the developer cartridge B and is used to receive the force of the conductive-side device pressing member. The second cooperating portion 273 is a block-shaped member. The surface of the second cooperating portion 273 close to the side of the developing roller 13 is provided as an inclined surface inclined away from the developing roller 13 (i.e., the cooperating portion does not have a hook-like structure as in the prior art), i.e., when the conductive-side device pressing member moves in the N82 direction, it cannot hook the second cooperating portion 273 and move the second movable member 270, thereby unable to exert a separating force on the developer cartridge B. That is, after the developer cartridge B is installed in place, the developing roller 13 will not be separated from the photosensitive drum.

[0259] As shown in FIG. 72, the second elastic member 34i2 is a tension spring. The second connecting portion 271 is provided with a fifth connecting block 274. The inside of the conductive end cover 12 is provided with a sixth connecting block 2122. The two ends of the second elastic member 34i2 are connected to the fifth connecting block 274 and the sixth connecting block 2122, respectively. When the second movable member 270 receives the force of the conductive-side device pressing member and rotates in the direction close to the developing roller 13, the second elastic member 34i2 is stretched and deformed. When the force of the conductive-side device pressing member is removed, the second elastic member 34i2 returns to its original position and drives the second movable member 270 to return to its original position.

[0260] In the prior art, after the developing cartridge B is installed into the image forming device, the driving side device pressing member 150 and the conductive side device pressing member reciprocate several times in the N82 and N72 directions to drive the developing cartridge B to make contact and separation movements with respect to the photosensitive drum several times, so that the detected member 256 on the developing cartridge B triggers the detection mechanism in the image forming device several times to complete the machine recognition operation of the image forming device on the developing cartridge B.

[0261] As shown in FIGS. 66-72, the present embodiment does not need to move the developing cartridge B as a whole to complete machine recognition. In the present embodiment, after the developing cartridge B is installed into the image forming device and the door cover of the image forming device is closed, the driving side device pressing member 150 and the conductive side device pressing member jointly move in the N7 direction and contact and apply the force F11 to the first movable member 120 and the second movable member 270 respectively, drive both to rotate in the direction of approaching the developing roller 13, and simultaneously drive the developing cartridge B to move in the direction of approaching the photosensitive drum, i.e. the developing cartridge B has forward and upward movements, so that the developing roller 13 contacts the photosensitive drum. In this process, the second elastic member 34i2 is stretched and deformed, the urging member 242 of the buffer assembly is pushed to rotate by the first movable member 120, and the reset member 241 is stretched, thereby playing a role of adjusting the pressure of the developing roller 13 on the photosensitive drum. Then the driving side device pressing member 150 and the conductive side device pressing member jointly move in the N8 direction. Since the second engaging portion 273 of the second movable member 270 hooks the conductive side device pressing member, it will not receive the separation force of the conductive side device pressing member, i.e. the separation force will not act on the entire developing cartridge B, the developing cartridge B will not move, the developing roller 13 will not separate from the photosensitive drum, and the second movable member 270 will return to the initial position under the action of the second elastic member 34i2. At the driving end, the first engaging portion 255 on the first movable member 120 has a hook-shaped structure and will receive the action force of the driving side device pressing member 150 in the N8 direction, i.e. the first movable member 120 rotates along the first abutting surface 2132a (arc surface) in the direction of moving away from the developing roller 13, and the detected member 256 on the first movable member 120 touches the detection mechanism in the image forming device to complete one detection. In this process, the first elastic member 260 is stretched, the pushing force of the first movable member 120 on the urging member 242 disappears, and the urging member 242 resets under the action of the reset member 241. Thereafter, the driving side device pressing member 150 and the conductive side device pressing member move again in the N72 direction, drive the first movable member 120 and the second movable member 270 to repeat the above process several times, so that the detected member 256 on the first movable member 120 touches the detection mechanism several times, thereby completing machine recognition. In the subsequent several times of reciprocating machine recognition, the developing cartridge B as a whole will not move, the developing roller 13 and the photosensitive drum always remain in contact, and in the subsequent use process, even if the image forming device does not need to develop, the developing roller 13 and the photosensitive drum will not separate.

[0262] The first movable member 120 and the second movable member 270 of the present embodiment do not need to frequently drive the entire development cartridge B to move, and the force borne is reduced, thereby protecting the movable member from being easily damaged, and the end cover cooperating with the movable member is also not easily damaged, prolonging the service life of the development cartridge B.

[0263] Embodiment Fifteen

[0264] The present embodiment provides another development cartridge, which differs from the embodiment fourteen in that the structure of the first movable member 120 is different.

[0265] As shown in FIGS. 73-76, in the present embodiment, the first movable member 120 cancels the arm portion 252 and the first connecting portion 251 arranged on the arm portion 252, and the first rotating shaft 2131 on the driving end cover 14 is also canceled, and the first movable member 120 is moved in a predetermined direction by abutting against the second abutting portion 2136.

[0266] Further, as shown in FIGS. 73-76, the outer side of the driving end cover 14 is further provided with a second abutting portion 2136, which is a convex rib structure protruding from the outer side surface of the driving end cover 14. The upper end surface of the second abutting portion 2136 is a third abutting surface 2136a, which is an arc surface. The lower end surface of the second arm portion 2522 of the first movable member 120 is a fourth abutting surface 2522a, which abuts against the third abutting surface 2136a to support the second arm portion 2522 on the second abutting portion 2136. The second arm portion 2522 can move along the third abutting surface 2136a in a predetermined direction. The first abutting surface 2132a and the third abutting surface 2136a can be a segment of arc surface with the same rotation center as the center, i.e., the first movable member 120 moves around the rotation center. The rotation center is a non-physical rotation center, and its position is located outside the powder tank, i.e., the rotation center does not overlap with the powder tank in the length direction. The cooperation mode of the first movable member 120 and the pressing member 150 of the driving side device is the same as that of the embodiment fourteen.

[0267] The other structures and operation modes of the development cartridge of the present embodiment are the same as those of the embodiment fourteen, and will not be described here again.

[0268] Embodiment Sixteen

[0269] The present embodiment provides yet another development cartridge, which differs from the embodiment fourteen in that the structure of the second movable member 270 is different.

[0270] As shown in FIGS. 77 and 78, in the present embodiment, the second movable member 270 is rotatably arranged at the conductive end of the cartridge body 210. The conductive end of the cartridge body 210 is provided with a third rotating shaft 214, which is arranged close to the lower end of the cartridge body 210. The second connecting portion 271 of the second movable member 270 is rotatably connected to the third rotating shaft 214, i.e., the second movable member 270 moves around the third rotating shaft 214 as the rotation center.

[0271] As shown in FIGS. 77 and 78, in the present embodiment, the cartridge body 210 is provided with an empty portion 215, which is a slot extending along the length direction. The empty portion 215 is a strip-shaped slot recessed upward from the lower end surface of the cartridge body 210. When viewed along the length direction, the rotation center of the second movable member 270 is located within the range of the empty portion 215. The portion of the cartridge body 210 other than the empty portion 215 encloses to form a powder reservoir, i.e., when viewed along the length direction, the rotation center of the second movable member 270 has no overlapping portion with the powder reservoir. Through such arrangement, the damage of the cartridge body 210 caused by the rotation center can be avoided, and the powder leakage can also be avoided.

[0272] The other structure and operation mode of the developing cartridge of the present embodiment are the same as those of Embodiment 14, and thus will not be described herein.

[0273] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A developing cartridge detachably mounted in a device main body of an image forming apparatus having a drum assembly including a photosensitive drum, characterized by, The developing cartridge comprises: a developing frame; a developing roller rotatably supported on the developing frame; and a support member fixedly connected to the developing frame at least in part, the support member configured to interact with the device main body when the developing cartridge is installed in the device main body to position the developing cartridge at a contact position where the developing roller is in contact with the photosensitive drum.

2. The process cartridge according to claim 1, wherein, The support member comprises a first support member which is a magnetic member, the magnetic member generating an attractive force with a metal part of the device main body to position the developing cartridge at the contact position where the developing roller is in contact with the photosensitive drum.

3. The process cartridge of claim 1, wherein, The support member comprises at least one second support member or at least one third support member, each of the second support member and the third support member comprising a fixed part fixedly connected to the developing frame, an elastic member elastically connected to the fixed part, and a movable part abutting against a guide part of the device main body, the elastic member being compressed, and an elastic force of the elastic member being used to position the developing cartridge at the contact position where the developing roller is in contact with the photosensitive drum.

4. The process cartridge of claim 1, wherein, The support member comprises at least one third support member, a bottom of the third support member forming a hook part, the hook part of the third support member being used to hook a bottom of a metal plate at a laser port of the device main body, the hook part protruding from the developing frame.

5. The process cartridge of claim 1, wherein, The support member comprises at least one third support member, the third support member comprising a connecting part fixedly connected to the developing frame, a positioning part used to abut against a positioned part of the device main body, and a deformation part having a connecting end and a free end, the connecting end being fixedly connected to the connecting part and the positioning part respectively, and the free end being used to abut against an abutted part of the device main body, the deformation part being deformed under the action of the abutted part, and an elastic force of the deformation part being used to position the developing cartridge at the contact position where the developing roller is in contact with the photosensitive drum.

6. The developer cartridge of any one of claims 1-5, wherein, Further comprising a shaft sleeve, the developing frame being provided with a shaft sleeve hole, and the shaft sleeve being fixedly installed in the shaft sleeve hole, and an end of the developing roller being rotatably installed in the shaft sleeve.

7. The developer cartridge of any one of claims 1-5, wherein, Further comprising a driving gear rotatably supported on the developing frame and a power receiving member in transmission connection with the driving gear; The power receiving member has a first state and a second state, when the power receiving member is in the first state, the power receiving member interferes with a driving head of the image forming device and is pushed to move in a direction opposite to an installation direction, and when the power receiving member is in the second state, the power receiving member cannot move in the direction opposite to the installation direction.

8. The developer cartridge of any one of claims 1-5, wherein, The developing frame further comprises a movable member movably arranged on the developing frame, the movable member is used to receive the force movement of the image forming device, the developing frame is provided with an abutting portion abutting against the movable member, when the movable member moves along the abutting portion, the rotation center of the movable member does not overlap with the non-overlapping portion of the powder tank of the developing frame, viewed along the axis of the developing roller.

9. The developer cartridge of any one of claims 1-5, wherein, The developing frame further comprises a first movable member, the developing frame comprises a driving side developing side cover arranged on the driving side of the developing cartridge, the first movable member is slidably arranged on the driving side developing side cover, the first movable member comprises a gravity block, when the developing cartridge acts on the installation detection device of the device main body, the first movable member is reset to a non-recognized installation position under the gravity of the gravity block.

10. A power receiving member for receiving a driving force of a driving head of an image forming apparatus, and applied to the developing cartridge according to any one of claims 1 to 9, characterized by, When the power receiving member of the developing cartridge is in the first state, the driving head interferes with the power receiving member and pushes the power receiving member to move in the direction opposite to the installation direction of the developing cartridge.

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