Developing box and drum assembly

Abstract

The developing box can be detachably combined with the drum assembly provided with a photosensitive drum and a photosensitive gear to form a processing box, the photosensitive gear is arranged at the end of the photosensitive drum, the photosensitive drum and the photosensitive gear rotate together, the processing box is detachably installed on an image forming device, and the developing box comprises a box body, a driving device and a driving device, a developing roller that rotates about an axis extending in a first direction; the detected piece is located at the second end and used for triggering a detection piece of the image forming device; the storage medium is used for storing information of the developing box; the electric contact surface is positioned at the first end and is electrically connected with the storage medium; and the power receiving part receives the power transmitted from the drum assembly to rotate and is used for driving at least one of the developing roller and the detected part to move. The developing box disclosed by the utility model transmits power from the drum assembly to the developing box through the power receiving piece, so that the structure is simplified, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of image forming, in particular to a developing cartridge and a drum unit. Background Art

[0002] A processing cartridge is a detachable part widely used in an image forming apparatus. The processing cartridge includes a developing cartridge and a drum unit, and the developing cartridge is detachably mounted on the drum unit. After the printing consumables in the image forming apparatus are used up, a new developing cartridge needs to be replaced.

[0003] Conventionally, two motors and two power output units are usually provided in an image forming apparatus to drive the developing cartridge and the drum unit respectively. However, this setting makes the structures of the image forming apparatus and the processing cartridge complex and the manufacturing cost high. Summary of the Utility Model

[0004] According to one aspect of the utility model, a developing cartridge is provided, which can be detachably combined with a drum unit having a photosensitive drum and a photosensitive gear to form a processing cartridge. The photosensitive gear is provided at an end of the photosensitive drum, and the photosensitive drum and the photosensitive gear rotate together. The processing cartridge is detachably mounted on an image forming apparatus. The developing cartridge includes:

[0005] A cartridge body having a first end and a second end in a first direction, a third end and a fourth end in a second direction, and a fifth end and a sixth end in a third direction;

[0006] A developing roller that rotates about an axis extending in the first direction;

[0007] A detected member located at the second end for triggering a detecting member of the image forming apparatus;

[0008] A storage medium for storing information of the developing cartridge;

[0009] An electrical contact surface located at the first end and electrically connected to the storage medium; and

[0010] A power receiving member that receives power transmitted from the drum unit and rotates to drive at least one of the developing roller and the detected member.

[0011] The developing cartridge of the utility model transmits power from the drum unit to the developing cartridge through the power receiving member, simplifies the structure, and reduces the production cost.

[0012] In some embodiments, the power receiving member is provided at the first end, the power receiving member meshes with the photosensitive gear, and the rotation axis of the power receiving member intersects the first direction.

[0013] In some embodiments, the power receiving member is a worm.

[0014] In some embodiments, the photosensitive gear includes a second photosensitive gear which is a helical gear, and the power receiving member meshes with the second photosensitive gear;

[0015] The developing cartridge further includes a first cover provided at the first end of the cartridge body, and the power receiving member is rotatably provided on the first cover.

[0016] In some embodiments, the developing cartridge further includes: a powder feeding roller rotatably provided about an axis in a first direction;

[0017] a rotating member for driving a detected member to move; and

[0018] a transmission assembly provided at the first end of the cartridge body, the transmission assembly including:

[0019] a developing gear for driving the developing roller to rotate;

[0020] a powder feeding gear for driving the powder feeding roller to rotate; and

[0021] a second transmission gear which meshes with the power receiving member and transmits power to the developing gear, the powder feeding gear and the rotating member.

[0022] In some embodiments, the transmission assembly further includes a driving portion coaxially provided with a power output unit of the image forming apparatus;

[0023] The second transmission gear is coaxially provided with the driving portion and is capable of driving the driving portion to rotate synchronously or rotate relative to the driving portion.

[0024] In some embodiments, the drum assembly further includes a first transmission member which rotates with the photosensitive drum;

[0025] The power receiving member is provided at the second end of the cartridge body, meshes with the first transmission member to rotate, and drives the developing roller to rotate.

[0026] In some embodiments, the developing cartridge further includes: a powder feeding roller rotatably provided about an axis in a first direction;

[0027] a rotating member for driving a detected member to move; and

[0028] a transmission assembly provided at the first end or the second end of the cartridge body, the transmission assembly including:

[0029] a developing gear for rotating with the developing roller;

[0030] a powder feeding gear for driving the powder feeding roller to rotate; and

[0031] The power receiving member is provided coaxially with the developing roller and drives the developing roller to rotate, and the powder feeding gear and the rotating member receive the power of the power receiving member to rotate.

[0032] The present utility model further provides a drum assembly, which can be detachably combined with a developing cartridge of any one of the above two items to form a processing cartridge, and the processing cartridge is detachably mounted on an image forming apparatus. The drum assembly includes:

[0033] A photosensitive drum;

[0034] A photosensitive gear, which rotates together with the photosensitive drum and is arranged at one end of the photosensitive drum in the axial direction of the photosensitive drum;

[0035] A first transmission member, which rotates together with the photosensitive drum and is arranged at the other end of the photosensitive drum in the axial direction of the photosensitive drum.

[0036] The present utility model further provides a drum assembly, which can be detachably combined with a developing cartridge to form a processing cartridge, and the processing cartridge is detachably mounted on an image forming apparatus.

[0037] The developing cartridge includes:

[0038] A cartridge body, which has a first end and a second end in a first direction, a third end and a fourth end in a second direction, and a fifth end and a sixth end in a third direction;

[0039] A developing roller, which is rotatably arranged around an axis in the first direction; and

[0040] A movable member, which is located at the first end;

[0041] The drum assembly includes:

[0042] A detected member, which moves in response to the movement of the movable member, thereby triggering a detection member of the image forming apparatus. In the first direction, the distance from the detected member to the second end is less than the distance from the detected member to the first end.

[0043] In some embodiments, the drum assembly further includes:

[0044] A force-receiving member;

[0045] A moving member, the detected member is in transmission connection with the force-receiving member through the moving member, and the moving member and the detected member move along with the movement of the force-receiving member.

[0046] In some embodiments, the moving member is a swing rod, which extends in the first direction, the force-receiving member and the detected member are respectively located at two opposite ends of the moving member in the first direction, the force-receiving member receives the acting force of the movable member, drives the moving member to swing around an axis parallel to the third direction, so that the moving member swings, thereby enabling the detected member to trigger the detection member of the image forming apparatus.

[0047] In some embodiments, the movable member is a rotating member, which is rotatably arranged around an axis in the first direction and can move along the first direction;

[0048] A force-bearing inclined surface is provided on the force-bearing member. When the rotating member moves along the first direction, a force is applied to the force-bearing inclined surface. The force-bearing inclined surface converts the force of the rotating member along the first direction into the swing of the moving member around the axis of the third direction.

[0049] In some embodiments, the force-bearing member is configured to be able to swing around an axis in a first direction. Before the developing box is installed in the drum assembly, the force-bearing member is moved to swing around the axis so that the force-bearing member avoids the developing box. After the developing box is installed in the drum assembly, the force-bearing member is moved to reset it, so that the force-bearing member contacts the rotating member and receives the force applied by it, thereby driving the movable member to swing around an axis parallel to the third direction.

[0050] In some embodiments, the moving member extends along the first direction, the force-bearing member and the detected member are respectively located at two opposite ends of the moving member in the first direction, and the force-bearing member receives the force of the movable member to drive the moving member to move along the first direction.

[0051] In some embodiments, the moving part extends along the first direction, the force-bearing part and the detected part are respectively located at two opposite ends of the moving part in the first direction, and the force-bearing part receives the force of the movable part to drive the moving part to rotate around the rotation axis extending along the first direction.

[0052] The utility model also provides a drum assembly, which can be detachably combined with a developing box to form a processing box, and the processing box can be detachably installed on an image forming device.

[0053] The developer box includes:

[0054] The box body has a first end and a second end in the first direction, a third end and a fourth end in the second direction, and a fifth end and a sixth end in the third direction;

[0055] A developing roller, which is rotatably arranged around an axis in a first direction;

[0056] as well as

[0057] A conductive member, which is electrically connected to the developing roller and is disposed at the first end of the box body;

[0058] The drum assembly includes:

[0059] a frame, the frame comprising a right frame and a left frame opposite to each other in a first direction, wherein when the developing cartridge is mounted to the drum assembly, the right frame is closer to the first end of the cartridge body than the left frame; and

[0060] The electrode is disposed on the left frame and is used to contact the electric output portion of the image forming device to receive a voltage. The electrode is electrically connected to the conductive member to transfer the voltage to the developing roller.

[0061] In some embodiments, the drum assembly further includes a conductive member that extends along a first direction. The two ends of the conductive member in the first direction are respectively in contact with the conductive piece and the electrode to transfer voltage.

[0062] In some embodiments, the conductive member is a paper guide roller.

[0063] In some embodiments, the electrode includes a first contact portion and a second contact portion. The first contact portion is exposed outside the left frame and is used to contact the electrical output portion, and the second contact portion is used to contact the conductive member to transfer voltage.

[0064] The conductive piece includes a first conductive piece and a second conductive piece that conduct electricity with each other. The first conductive piece is used to contact the conductive member to receive voltage, and the second conductive piece is used to transfer voltage to the developing roller.

[0065] The present utility model also provides a drum assembly that can be detachably combined with a developing cartridge to form a processing cartridge. The processing cartridge is detachably installed on an image forming apparatus. The drum assembly includes:

[0066] A frame;

[0067] A photosensitive drum that is rotatably arranged around an axis in the first direction;

[0068] A bracket that is detachably and fixedly installed on the frame; and

[0069] A storage medium that is used to store information of the developing cartridge and is detachably installed on the bracket.

[0070] In some embodiments, an elastic member is provided on the bracket so that the storage medium can be movable relative to the frame.

[0071] In some embodiments, a clamping portion is provided on the frame, and the bracket is detachably and fixedly installed on the clamping portion;

[0072] The clamping portion has an outer shell body that extends along the first direction. A fixing rib is provided inside the outer shell body, and the fixing rib divides the inner cavity formed by the outer shell body into two parts. The clamping portion also has a clamping protrusion at the top in the third direction;

[0073] The bracket is provided with a first fitting portion and a second fitting portion. The first fitting portion and the second fitting portion have a first gap in the third direction. The first fitting portion and the second fitting portion are symmetrically arranged in the second direction and have a second gap in the middle. When the bracket is installed on the clamping portion, the first fitting portion is at the top of the outer shell body in the third direction, and the second fitting portion is located in the two inner cavities formed by the outer shell body and the fixing rib. The top of the outer shell body is fixed in the first gap, the second gap between the fixing rib and the second fitting portion is fixed, and the clamping protrusion is located in the second gap between the first fitting portions;

[0074] The storage medium is detachably and fixedly arranged on the bracket.

[0075] In some embodiments, the frame is provided with a clamping portion, and the bracket is detachably and fixedly mounted on the clamping portion;

[0076] The clamping portion has a housing body extending in a first direction; the clamping portion further has a clamping rib at one end close to the interior of the frame in the first direction;

[0077] The bracket includes a first part, a second part and an elastic member. The second part is located above the first part in a third direction, and the elastic member is disposed between the first part and the second part, so that the second part can move relative to the first part in the third direction; the first part is provided with a fixed claw, a limiting claw and a first mating portion, and there is a first gap between the first mating portion and the fixed claw; when the bracket cooperates with the clamping portion, the fixed claw is snapped with the clamping rib, the top of the housing body is fixed in the first gap, and the limiting claw is movably connected to the second part to prevent the second part from separating from the first part;

[0078] The storage medium is detachably and fixedly arranged on the second part.

[0079] In some embodiments, the frame is provided with a clamping portion, and the bracket is detachably and fixedly mounted on the clamping portion;

[0080] The clamping portion has a housing body extending in a first direction; the clamping portion further has a clamping rib at one end close to the interior of the frame in the first direction;

[0081] The bracket includes a first mating portion and a fixed claw, and there is a first gap between the first mating portion and the fixed claw; when the bracket cooperates with the clamping portion, the fixed claw is snapped with the clamping rib, and the top of the housing body is fixed in the first gap;

[0082] The storage medium is detachably and movably arranged on the bracket through an elastic member. BRIEF DESCRIPTION OF THE DRAWINGS

[0083] Figure 1 is a schematic diagram of the overall structure of the developing cartridge mounted on the drum unit in the first embodiment;

[0084] Figure 2 is a schematic diagram of another perspective structure of the developing cartridge mounted on the drum unit in the first embodiment;

[0085] Figure 3 is a schematic diagram of the overall structure of the drum unit in the first embodiment;

[0086] Figure 4 is Figure 3 an enlarged schematic diagram of I in

[0087] Figure 5 is a schematic diagram of the overall structure of the developing cartridge in the first embodiment;

[0088] Figure 6 It is a schematic diagram of the overall structure of the first end of the developing cartridge in Embodiment 1;

[0089] Figure 7 It is an exploded view of the first end of the developing cartridge in Embodiment 1;

[0090] Figure 8 It is a schematic diagram of a partial drive assembly when the photosensitive drum is mated with the first end of the developing cartridge in Embodiment 1;

[0091] Figure 9 It is a schematic diagram of the arrangement of the drive assembly when the developing cartridge is installed at the first end of the drum assembly in Embodiment 1;

[0092] Figure 10 It is an exploded view of the developing cartridge in Embodiment 1;

[0093] Figure 11 It shows a schematic diagram of the structure of the drum assembly provided in Embodiment 2;

[0094] Figure 12 It shows a schematic diagram of the structure of the developing cartridge provided in Embodiment 2;

[0095] Figure 13 It shows a schematic diagram of a partial structure of the developing cartridge provided in Embodiment 2.

[0096] Figure 14 It is a schematic diagram of the structure of the processing cartridge in Embodiment 3;

[0097] Figure 15 It is a schematic diagram of the structure of the developing cartridge in Embodiment 3;

[0098] Figure 16 It is a schematic diagram of the structure of the first-end drive assembly in Embodiment 3;

[0099] Figure 17 It is a schematic diagram of the structure of the rotating member in Embodiment 3;

[0100] Figure 18 It is a schematic diagram of the rotating member installed on the first cover in Embodiment 3;

[0101] Figure 19 It is a top view of the developing cartridge in Embodiment 3;

[0102] Figure 20 It is a schematic diagram of the structure of the drum assembly in Embodiment 3;

[0103] Figure 21 It is a partial exploded view of the drum assembly in Embodiment 3;

[0104] Figure 22 It is a schematic diagram of the structure when the developing cartridge is installed on the drum assembly in Embodiment 3;

[0105] Figure 23 It is a schematic structural diagram of the processing cartridge in the fourth embodiment;

[0106] Figure 24 It is a schematic structural diagram of the drum unit in the fourth embodiment;

[0107] Figure 25 It is an exploded view of the first end of the developing cartridge in the fourth embodiment;

[0108] Figure 26 It is a schematic structural diagram of the power transmission from the electrode on the drum unit to the developing roller and the powder feeding roller in the fourth embodiment;

[0109] Figure 27 It is a schematic structural diagram of the drum unit in the fifth embodiment;

[0110] Figure 28 It is a schematic partial structural diagram of the drum unit in the fifth embodiment;

[0111] Figure 29 It is a schematic structural diagram of the first implementation manner of the drum unit bracket in the fifth embodiment;

[0112] Figure 30 It is a schematic structural diagram of the first implementation manner of the drum unit bracket in the fifth embodiment;

[0113] Figure 31 It is a schematic structural diagram of the second implementation manner of the drum unit bracket in the fifth embodiment;

[0114] Figure 32 It is an exploded view of the second implementation manner of the drum unit bracket in the fifth embodiment;

[0115] Figure 33 An exploded view of the third implementation manner of the drum unit bracket in the fifth embodiment. Detailed implementation manners

[0116] The present invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0117] It should be noted that the terms "first", "second", etc. are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first", "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0118] In the present utility model, unless otherwise clearly defined and limited, terms such as "installation", "connection", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0119] In the present utility model, unless otherwise clearly defined and limited, the first feature being "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature being "above", "over" and "on top of" the second feature may be that the first feature is directly above or obliquely above the second feature, or merely indicates that the first feature has a higher horizontal height than the second feature. The first feature being "under", "beneath" and "underneath" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicates that the first feature has a lower horizontal height than the second feature.

[0120] In the above description, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0121] Embodiment 1

[0122] As Figures 1 - 4 shown, the developing cartridge 1 is detachably installed on the drum unit 2. The developing cartridge 1 and the drum unit 2 can be combined into a processing cartridge and detachably installed together on the image forming apparatus. A detecting member for detecting the developing cartridge 1 is provided inside the image forming apparatus. After being triggered by the developing cartridge 1, the detecting member moves, that is, moves from the initial position to the triggered position.

[0123] In this specification, reference may be made to the directions indicated in the accompanying drawings. The length direction of the processing cartridge is taken as the first direction, that is, the left-right direction. Among them, the right direction is the driving end of the processing cartridge, facing the power output unit of the image forming apparatus, and is used to receive the driving force from the power output unit of the image forming apparatus. The left direction is the non-driving end and does not receive the driving force from the image forming apparatus. The width direction of the processing cartridge is taken as the second direction, that is, the front-back direction, and the height direction of the processing cartridge is taken as the third direction, that is, the up-down direction. The above directions also apply to the developing cartridge 1 and the drum unit 2.

[0124] The drum assembly 2 includes a right frame 21, a left frame 22, a front frame 23, a rear frame 24, a bottom frame 25, and a photosensitive drum 26. The right frame 21 and the left frame 22 are disposed opposite to each other in a first direction. The front frame 23 and the rear frame 24 are disposed opposite to each other in a second direction. In the first direction, the bottom frame 25 is located between the right frame 21 and the left frame 22. In the second direction, the bottom frame 25 is located between the front frame 23 and the rear frame 24. After the developing cartridge 1 is installed on the drum assembly 2, the developing cartridge 1 and the drum assembly 2 form an integral body. The right frame 21 is adjacent to the first end 11 of the developing cartridge 1, and the left frame 22 is adjacent to the second end 12 of the developing cartridge 1. In the second direction, the front frame 21 is adjacent to the third end of the developing cartridge, and the rear frame 24 is adjacent to the fourth end of the developing cartridge. Relative to the rear frame 24, the photosensitive drum 26 is closer to the front frame 23. At least a part of the photosensitive drum 26 is covered by the front frame 23, and the front frame 23 has a protective effect on the photosensitive drum 26. The photosensitive drum 26 is used to receive the developer provided by the developing cartridge 1, form an electrostatic latent image, and display the image on an imaging sheet (such as paper). On one side of the photosensitive drum 26 close to the first end in the first direction, there is a photosensitive gear, and the photosensitive gear includes a first photosensitive gear 261 and a second photosensitive gear 262. The second photosensitive gear 262 is a helical gear. The first photosensitive gear 261 and the second photosensitive gear 262 can rotate together with the photosensitive drum. Among them, the second photosensitive gear 262 is used to receive the driving force of the image forming device and drive the photosensitive drum 26 to rotate. In other embodiments, it can also be that the driving force of the image forming device is received through a coupling provided on the end face of the photosensitive gear. A drum handle 241 is located on the rear frame 24, and the drum handle 241 can be held by a user. The drum assembly 2 further includes a first guiding portion 211 and a second guiding portion 221. The first guiding portion 211 is located on the right frame 21, and the second guiding portion 221 is located on the left frame 22. The first guiding portion 211 and the second guiding portion 221 are used to guide the developing cartridge 1 during the process of installing the developing cartridge 1 onto the drum assembly 2. On the bottom frame 25, there are provided a first biasing member 251, a second biasing member 252, a first placement hole 253, a second placement hole 254, and a locking member 255. Both the first biasing member 251 and the second biasing member 252 are provided with a biasing block and an elastic member such as a compression spring, or both the first biasing member 251 and the second biasing member 252 are elastic biasing blocks. Both the first biasing member 251 and the second biasing member 252 can move relative to the drum assembly 2 in the second direction. When the developing cartridge 1 is installed on the drum assembly 2, the first biasing member 251 and the second biasing member 252 can apply a force in the second direction to the developing cartridge 1 such that the developing roller 131 faces the direction of the photosensitive drum 26, so that the developing roller 131 is in close contact with the photosensitive drum 62. Both the first placement hole 253 and the second placement hole 254 penetrate the bottom frame 25 in a third direction. In the first direction, the first placement hole 253 is closer to the right frame 21 relative to the left frame 22. The locking member 255 is used to lock the developing cartridge 1 so that it does not detach from the drum assembly 2..

[0125] Such asFigures 5 - 9 As shown, this embodiment provides a developing cartridge 1, which includes a cartridge body 10, a power receiving member, a transmission assembly, a pushing portion, a first cover 18, a second cover 121, and a component to be detected.

[0126] As Figure 5 shown, Figure 6 The cartridge body 10 has a first end 11 and a second end 12 oppositely arranged in the first direction. The first end 11 corresponds to the right direction, and the second end 12 corresponds to the left direction. The cartridge body 10 has a third end 13 and a fourth end 14 oppositely arranged in the second direction. The third end 13 corresponds to the front direction, and the fourth end 14 corresponds to the rear direction. The cartridge body 10 has a fifth end 15 and a sixth end 16 oppositely arranged in the third direction. The fifth end 15 corresponds to the upward direction, and the sixth end 16 corresponds to the downward direction. A handle 141 is provided at the fourth end 14 of the cartridge body 10, and the user can pick up the developing cartridge 1 by holding the handle 141. A paper guide plate 161 is located at the sixth end 16 of the cartridge body 10. The first cover 18 is detachably provided at the first end 11 of the cartridge body 10 and covers at least a part of the transmission assembly. The first cover 18 is used to protect the transmission assembly. The second cover 121 is detachably mounted at the second end 12 of the cartridge body 10 and covers at least a part of the component to be detected. The second cover 121 protects the component to be detected.

[0127] A developing roller 131 is provided on the developing cartridge 1 and extends along the first direction. The developing roller 131 is supported by the cartridge body 10 and can rotate relative to the cartridge body 10, and the rotation axis extends along the first direction. In the second direction, the developing roller 131 is closer to the third end 13 relative to the fourth end 14. The developing roller 131 contacts the photosensitive drum 26 on the drum assembly 2. After receiving the developer transferred by the powder feeding roller 133, the developing roller 131 transfers the developer to the photosensitive drum 26. The developing cartridge 1 further includes a blade 132, which is used to contact the developing roller 131 and control the thickness of the developer layer on the roller body of the developing roller 131. The blade 132 extends along the first direction.

[0128] It is known that in this embodiment, the blade is a steel blade. In some embodiments, the blade can be made of other materials.

[0129] As Figures 6 - 9As shown in the figure, the transmission assembly is arranged at the first end 11 of the cartridge 10. The transmission assembly includes a driving part rotatably mounted on the first end 11 of the cartridge 10, and the rotation axis of the driving part is parallel to the first direction. The driving part includes a driving gear 41 and a power receiving part 40 integrally formed coaxially. The driving gear 41 is closer to the first end 11 of the cartridge 10 than the power receiving part 40 in the first direction. A driving protection part 184 extending in the first direction is provided on the first cover 18 at the first end 11 of the cartridge 10. The middle of the driving protection part 184 is a first mounting hole 181 penetrating the first cover 18 in the first direction. The driving part is rotatably mounted on the driving protection part 184 along the first mounting hole 181. The power receiving part 40 is used to be coupled with the power output shaft of the power output unit on the image forming device to receive the power output by the image forming device and transmit the power to the gear on the transmission assembly. It is known that, viewed from the first direction, the blade holder of the powder discharging blade 132 is approximately an L shape. If the L-shaped blade holder is enclosed into a complete rectangle, the rotation axis of the driving part of the developing cartridge 1 is not within the rectangle range, and in this embodiment, the projection of the driving part and the powder discharging blade 132 in the first direction do not completely overlap.

[0130] The transmission assembly further includes a developing gear 42, a powder feeding gear 43, a first transmission gear 44, a stirring gear 45, and a second transmission gear 46. The developing gear 42 is fixedly mounted on the D-shaped opening at one end of the roller shaft close to the first end 11 in the first direction. The developing gear 42 receives the power transmitted by the driving gear 41 and drives the roller shaft of the developing roller 131 to rotate together. The powder feeding gear 43 is coaxially and fixedly mounted at one end of the roller shaft of the powder feeding roller (not shown) close to the first end 11 of the cartridge 10 and rotates together with the powder feeding roller. The stirring gear 45 is coaxially and fixedly mounted at one end of the stirring frame (not shown in the figure) close to the first end 11 of the cartridge 10 and rotates together with the stirring frame. The stirring gear 47 includes a large-diameter stirring gear and a small-diameter stirring gear. The first transmission gear 44 is rotatably mounted at the first end 11 of the cartridge 10. The first transmission gear 44 includes a large-diameter transmission gear and a small-diameter transmission gear that rotate coaxially. The second transmission gear 46 is rotatably arranged at the first end of the cartridge 10. Specifically, the second transmission gear 46 is arranged on the driving protection part 184 of the first cover 18 and coincides with the rotation axis of the driving gear 41, that is, the second transmission gear 46 can rotate coaxially with the driving gear 41.

[0131] The transmission assembly further includes a power receiving member 47. In this embodiment, the power receiving member 47 is specifically a worm 47. In other embodiments, the power receiving member 47 can also be other transmission components as long as they can transmit power. For example, the power receiving member can be other transmission components that rotate around an axis intersecting the first direction. The worm 47 is disposed on the first cover 18 at the first end 11 of the box body 10. Specifically, the worm 47 is closer to the photosensitive drum 26 than the transmission gear 41 in the second direction. The rotation axis of the worm 47 is parallel to the third direction, and the worm 47 can mesh with the second photosensitive gear 262 on the photosensitive drum 26. And because the second photosensitive gear 262 is a helical gear, when the photosensitive drum 26 rotates around the rotation axis parallel to the first direction, the worm can be caused to rotate around the rotation axis parallel to the third direction through the second photosensitive gear 262.

[0132] Such as Figure 8As shown, the first protective cover 18 is located at the first end 11 of the box body 10, and the first protective cover 18 is fixedly mounted on the box body 10 in a detachable manner. The first protective cover 18 does not limit the axial position of the powder feeding roller. The first protective cover 18 includes a first mounting hole 181, a first forced pushing portion 182, a mounting groove 183, a drive protection portion 184, a protrusion 185, a second mounting portion 186, a second mounting hole 187 and a first guide 188. The first guide 188 is a cylindrical protrusion extending along the first direction away from the box body 10. The first guide 188 is used to cooperate with the first guide portion 211 on the drum assembly 2 during the process of installing the developer box 1 to the drum assembly 2, and guide the developer box 1 to be smoothly installed on the drum assembly 2. In the first direction, the first guide 181 is closer to the third end 13 than the fourth end 14. The first forced pushing portion 182 is located at the rear end of the first protective cover 18. The first forced pushing portion 182 protrudes in the direction away from the developing roller 131 in the second direction. The first forced pushing portion 182 may be a U-shaped, C-shaped or V-shaped protrusion, which is not specifically limited here. The first forced pushing portion 182 is used to cooperate with the first force applying member 251 on the drum assembly 2 when the developing cartridge 1 is installed on the drum assembly 2, and receive the forced pushing force applied by the first force applying member 251 on the drum assembly 2 to the developing cartridge 1, so that the developing roller 131 can be closely fitted with the photosensitive drum 26. The mounting groove 183 is located at the sixth end 16 of the first protective cover 18 in the third direction. The mounting groove 183 is recessed upward from the bottom of the first protective cover 18 in the third direction. A buckle is provided on the mounting groove 183. In the second direction, the mounting groove 183 is closer to the third end 13 than the fourth end 14. The driving protection part 184 is used to protect the driving part. The driving protection part 184 at least covers part of the driving part. The driving protection part 184 is provided with a through hole penetrating the driving protection part 184 in the first direction, which is the first mounting hole 181. The first mounting hole 181 is used to allow the power receiving part 40 to leak out in the first direction, so that the power receiving part 40 can receive the power output from the image forming device. The protrusion 185 is located on the inner side of the protective cover 18 close to the first end 11 of the box body. The protrusion 185 is a circular protrusion protruding in the direction close to the first end 11 of the box body. The second mounting part 186 is located on the side of the first protective cover 18 close to the photosensitive drum 26 in the second direction. The second mounting part 186 has a second mounting hole 187. The worm 47 can be fixed on the second mounting part 186 through the second mounting hole 187, and then rotatably mounted on the first protective cover 18.

[0133] like Figure 2 and Figure 8As shown, the developing cartridge 1 further includes a bracket 17 and a storage medium 171. The storage medium 171 is detachably mounted on the bracket 17. A buckle is provided on the bracket 17, and the bracket 17 is detachably mounted on the mounting groove 183 of the first cover 18 through the buckle. The storage medium 17 is used to store relevant information of the developing cartridge 1, and transfer the relevant information of the developing cartridge 1 to the image forming apparatus when the developing cartridge 1 and the drum unit 2 are installed in the image forming apparatus. The storage medium 17 includes an electrical contact surface. The electrical contact surface can be directly located on the storage medium 17 to achieve electrical connection with the storage medium 17, or can be electrically connected to the storage medium 17 through an intermediate member. The electrical contact surface is used to directly contact the image forming apparatus to transfer the information in the storage medium 17 to the image forming apparatus. When the developing cartridge 1 is installed on the drum unit 2, the storage medium 17 is exposed through the first placement hole 253 on the drum unit 2 and contacts the image forming apparatus.

[0134] As Figure 7 , Figure 9 , Figure 10 shown, the detected component of the developing cartridge 1 includes a rotating member 48. The rotating member 48 is rotatably mounted at the first end 11. The rotating member 48 can engage with the large-diameter stirring teeth of the stirring gear 45 and receive the power transmitted by the stirring gear 45 to rotate in the R1 direction. And the rotating member 48 can move in the first direction relative to the stirring gear 45. The rotating member 48 has a toothless portion. Initially, the rotating member 48 engages with the small-diameter stirring gear and rotates following the stirring gear 45; when the toothless portion on the rotating member 48 faces the small-diameter stirring gear, the rotating member 48 disengages from the small-diameter stirring gear and the rotating member 48 does not rotate following the stirring gear 45.

[0135] As Figure 7 , Figure 8 and Figure 9As shown, the driving gear 41 meshes with the developing gear 42 and the powder feeding gear 43. The power receiving part 40 drives the driving gear 41 to rotate after receiving the power output by the image formation. The driving gear 43 transmits the power to the meshing developing gear 41 and powder feeding gear 42, causing the developing roller 131 and the powder feeding roller to start rotating. The second photosensitive gear 262 of the photosensitive drum 26 meshes with the worm 47. The worm 47 meshes with the second transmission gear 46. The second transmission gear 46 meshes with the large-diameter transmission teeth of the first transmission gear 44. The first transmission gear 44 meshes with the large-diameter stirring teeth of the stirring gear 45 through the small-diameter transmission teeth. The small-diameter stirring teeth of the stirring gear 45 mesh with the rotating part 48. That is, when the developing cartridge 1 is installed on the drum unit 2, the second photosensitive gear 262 on the drum unit 2 meshes with the worm 47. When the photosensitive drum 26 starts to rotate, it drives the worm 47 to rotate around an axis parallel to the third direction. The rotation of the worm 47 drives the second transmission gear 46 to rotate around an axis parallel to the first direction. The second transmission gear 46 drives the first transmission gear 44 to rotate. The first transmission gear 44 drives the stirring gear 45 to rotate. The stirring gear 45 drives the rotating part 48 to rotate. In other embodiments, the rotation axis of the worm 47 may not be parallel to the third direction, but may be arranged in other directions as long as it can play a transmission role.

[0136] The second cover 121 is located at the second end of the cartridge body 10. The second cover 121 has a second pushing part 1212 and a second guiding member 1211. The second pushing part 1212 protrudes in the direction away from the developing roller 131. The second pushing part 1212 can be a U-shaped, C-shaped or V-shaped protrusion. In this embodiment, the first pushing part 182 and the second pushing part 1212 are arranged overlappingly in the first direction. In other embodiments, the two may not be overlapped or only one pushing part may be provided. The second pushing part 1212 is used to cooperate with the second applying member 252 on the drum unit 2 in the state where the developing cartridge 1 is installed on the drum unit 2, and receive the pushing force applied by the drum unit 2 to the developing cartridge 1. Under the action of the first applying member 251 and the second applying member 252 respectively, the first pushing part 182 and the second pushing part 1212 make the developing cartridge 1 always have a tendency to approach the photosensitive drum 26, so that the developing roller 131 is in close contact with the photosensitive drum 25, ensuring the imaging quality. The second guiding member 1221 is used to cooperate with the second guiding part 221 on the drum unit 2 during the installation of the developing cartridge 1 on the drum unit 2 to guide the installation of the developing cartridge 1.

[0137] As Figure 10As shown, the developing cartridge 1 further includes an upper cover 152. The upper cover 152 is located at the fifth end 15 of the cartridge body 10. The upper cover 152 includes mounting posts 1521, positioning posts 1522, a reset groove 1523, first mounting buckles 1524, and a second set of grooves 1525. The mounting posts 1521 are protrusions protruding away from the first end 11 along the first direction. The mounting holes 36 of the rotating member 48 are mounted on the mounting posts 1521, and the rotating member 48 can rotate relative to the mounting posts 1521 and move in the first direction. The positioning posts 1522 are cylindrical protrusions protruding upward along the third direction. The reset groove 1523 is a strip-shaped groove extending substantially along the second direction and recessed in the third direction. The reset groove 1523 is provided with a first positioning protrusion (not shown) extending along the second direction from the rear wall of the reset groove 1523. In this embodiment, the reset groove 1523 is closer to the first end 11 than the second end 12 in the first direction. In other embodiments, the reset groove 1523 can be closer to the second end 12 than the first end 11 in the first direction. The first mounting buckles 1524 are buckles protruding upward in the third direction. In this embodiment, the number of the first mounting buckles 1524 is six. The number of the first mounting buckles 1524 is not limited in this embodiment and can be set according to actual requirements. The second set of grooves 1525 are a plurality of grooves recessed downward along the third direction. The plurality of grooves are arranged along the first direction. The second set of grooves 1525 are used to strengthen the strength of the cartridge body 10. The developing cartridge 1 further includes a cover plate 151. The cover plate 151 is located above the upper cover 152 in the third direction. The cover plate 151 is provided with second mounting buckles 1511 or mounting through holes that cooperate with the first mounting buckles. The cover plate 151 is detachably mounted on the upper cover 152.

[0138] The detected components of the developing cartridge 1 further include a moving member 5 and a detected member 52. In this embodiment, the moving member 5 is a swing rod. In other embodiments, the moving member 5 can also move by translation rather than swing, for example, move in the first direction. The moving member 5 includes a force-receiving end 51, a positioning hole 53, a first arm 54 and a second arm 55. The positioning hole 53 is a through hole that penetrates the moving member 5 in the third direction. The positioning hole 53 and the positioning post 1522 are used to install the moving member 5. The force-receiving end 51 is located at the right end of the moving member 5 in the first direction. The force-receiving end 51 is used to be abutted by the rotating member 48 so that the moving member 5 swings with the positioning hole 53 as the swing point. The detected member 52 is located at the left end of the moving member 5 in the first direction. The detected member 52 is exposed through the detection port 1211 of the second cover 121. The detected member 52 is used to trigger the detector in the image forming apparatus so that the developing cartridge 1 is detected by the image forming apparatus. That is, when the rotating member 48 moves from the second position to the first position in the first direction, the force-receiving end 51 of the moving member 5 is abutted by the rotating member 48 and swings along the R1 direction. The entire moving member 5 swings around the positioning hole 53, and the detected member 52 swings along the R2 direction to trigger the detector 101. It can be known that the swing direction of the moving member 5 intersects with the first direction, preferably parallel to the third direction. In other embodiments, the moving member 5 can also swing or rotate around the rotation axis extending in the first direction.

[0139] The first arm 55 is located between the positioning hole 53 and the force-receiving end 51 in the first direction. The second arm 56 is located between the positioning hole 53 and the detected member 52 in the first direction. That is, the lengths of the first arm 55 and the second arm 56 depend on whether the positioning hole 53 is closer to the first end 11 or the second end 12 in the first direction. It can be known that in this embodiment, the positions of the positioning hole 53 and the positioning post 1522 and the inclination angle of the force-receiving portion 511 are not limited. When the positioning hole 53 and the positioning post 1522 are closer to the first end 11, that is, the length of the first arm 55 is smaller, the included angle between the extending direction of the force-receiving portion 511 and the first direction is smaller; when the positioning hole 53 and the positioning post 1522 are closer to the second end 12, that is, the length of the second arm 56 is smaller, the included angle between the extending direction of the force-receiving portion 511 and the first direction is larger.

[0140] The developing cartridge 1 further includes a cover plate 151. The cover plate 151 is located above the upper cover 152 in the third direction. The cover plate 151 is provided with a second mounting buckle 1511 or a mounting through hole that cooperates with the first mounting buckle. The cover plate 151 is detachably mounted on the upper cover 152 and covers at least a part of the moving member 5. The cover plate 151 protects the moving member 5.

[0141] Refer to Figure 10, the developing cartridge 1 further includes a first elastic member 155 and a second elastic member 156. In this embodiment, the first elastic member 155 and the second elastic member 156 are preferably compression springs. The first elastic member 155 is located in the reset groove 1523. One end of the first elastic member 155 close to the fourth end 14 in the second direction is sleeved on a first positioning protrusion (not shown) and abuts against the reset groove 1523. One end of the first elastic member 155 away from the fourth end 14 in the second direction is sleeved on the abutting block 324 and abuts against the moving member 5. The first elastic member 155 is compressed or extended substantially along the second direction. The first elastic member 155 is used to make the moving member 5 swing in the opposite direction again when the rotation member 48 stops abutting against it, so that the moving member 5 is reset to the position when it is not abutted. In other embodiments, the first elastic member 155 can be a tension spring. One end of the tension spring away from the fourth end 14 in the second direction is sleeved on the front end of the reset groove 1523, and the end close to the fourth end 14 is sleeved on the moving member 5. The second elastic member 156 is installed on the mounting post 1521 along the first direction and supported by the mounting post 1521. One end of the second elastic member 156 close to the first end 11 in the first direction abuts against the side wall of the first end 11, and the end away from the first end 11 abuts against the rotation member 48. The second elastic member 156 is compressed or extended along the first direction. The second elastic member 156 is used to drive the rotation member 48 to move rightward in the first direction.

[0142] The following is the working process of the developing cartridge disclosed in this embodiment:

[0143] Install the developing cartridge 1 and the drum unit 2 into the image forming apparatus. The second photosensitive gear 262 on the drum unit 2 meshes with the worm 47. When the photosensitive drum 26 starts to rotate, it drives the worm 47 to rotate around an axis parallel to the third direction. The rotation of the worm 47 drives the second transmission gear 46 to rotate around an axis parallel to the first direction. The second transmission gear 46 drives the first transmission gear 44 to rotate. The first transmission gear 44 drives the stirring gear 45 to rotate. The stirring gear 45 drives the rotation member 48 to rotate. The rotation of the rotation member 48 abuts against the moving member 5, causing the moving member 5 to rotate in the R1 direction when viewed in the second direction, that is, rotate clockwise. Specifically, the force-receiving end 51 on the second arm 55 abuts against the rotation member 48, driving the moving member 5 to rotate. When the detected member 52 on the first arm 54 rotates with the moving member 5, it cooperates with the detecting member on the image forming apparatus and is detected, so that the developing cartridge 1 is recognized by the image forming apparatus.

[0144] Furthermore, in this embodiment, the second transmission gear 46 is disposed on the driving protection portion 184 and is coaxial with the driving gear and can rotate relative to it. The second transmission gear 184 can also be directly installed on the power receiving portion 40, and a bearing or the like is provided between the second transmission gear 184 and the power receiving portion 40, as long as the second transmission gear 184 and the power receiving portion 40 can be coaxial and can rotate relative to each other, and no specific limitation is made here.

[0145] Further, in this embodiment, the force transmitted by the worm 47 drives the rotating member 48, and the rotating member 48 drives the moving member 5, thereby completing the detection work. This combination is not the only detection method. As long as it is a detection component and is driven by the force transmitted by the worm 47, it is acceptable and will not be specifically limited herein.

[0146] Further, in this embodiment, the second transmission gear 46 meshes with the first transmission gear 44, the first transmission gear 44 meshes with the stirring gear 45, and the stirring gear 45 meshes with the rotating member 48 to transmit power to drive the rotating member 48. This transmission method is not the only one. For the stirring gear 45, it may not mesh with the rotating member 48. Instead, the driving gear 41 drives the developing gear 42 and the powder feeding gear 43, and then the power is transmitted to the stirring gear 45 through the transmission gear. The second transmission gear 46 meshes with the first transmission gear 44. Similarly, an additional transmission gear is added to mesh with the rotating member. That is, when the power is transmitted from the second photosensitive gear 262 on the photosensitive drum 26 through the worm 47, the force is directly transmitted to the rotating member 48 by a series of transmission gears without driving other components on the developing cartridge 1, and the remaining components are driven by the driving gear 41. That is, as long as the rotating member 48 is driven by the force transmitted from the photosensitive drum 26 to the worm 47, there is no limitation herein on how to add transmission gears for the remaining components, whether they are driven by the driving gear 41 or by the force transmitted by the worm 47 like the rotating member 48. The number, position, and size of the transmission gears can be added arbitrarily and can be combined arbitrarily.

[0147] By providing a worm 47 with a central axis parallel to the third direction at the third end 13 in the second direction of the developing cartridge 1, and the worm 47 can mesh with the second photosensitive gear 262 on the photosensitive drum 26. When the developing cartridge 1 is installed on the drum assembly 2 and starts to work, the photosensitive drum 26 can transmit the force to the developing cartridge 1 through the worm 47 and drive the rotating member 48 to rotate, completing the identification and detection of the developing cartridge 1, forming a dual power source with the driving gear 41 on the developing cartridge 1, capable of sharing the number of gears on the driving gear 41, reducing the number of gears driven by the driving gear 41, and reducing the risk of damage to the driving gear 41.

[0148] By adopting the image forming apparatus of this embodiment, only one motor and power output unit need to be set to output power to the drum assembly, and there is no need to set two motors and power output units to output power to the drum assembly and the developing cartridge simultaneously, which simplifies the structure and reduces the production cost.

[0149] This embodiment also provides a modified implementation manner. The only difference from the foregoing embodiment is that the second transmission gear 46 is integrally formed on the power receiving portion 40, and the power receiving portion 40 no longer receives the driving force from the image forming apparatus.

[0150] In this embodiment, the second transmission gear 46 is integrally formed on the power receiving portion 40, that is, the driving gear 41 and the second transmission gear 46 rotate integrally. When the developing cartridge 1 is installed on the drum unit 2 and starts to work, the second photosensitive gear 262 on the photosensitive drum 26 drives the worm 47, and the worm 47 drives the second transmission gear 46 and the driving gear 41 to rotate coaxially together. That is, all the components on the developing cartridge 1 are driven by the force transmitted by the receiving worm 47.

[0151] Furthermore, when the second transmission gear 46 is integrally formed with the power receiving portion 40, the driving gear 41 may not be provided, and the force is directly transmitted to the developing cartridge 1 through the second transmission gear 46 to drive the entire transmission assembly. There is no specific limitation on this, as long as the driving assembly on the developing cartridge 1 is driven by the force on the photosensitive drum 26 transmitted by the worm 47.

[0152] By providing a worm 47 with a central axis parallel to the third direction at the third end 13 in the second direction of the developing cartridge 1, and the worm 47 can mesh with the second photosensitive gear 262 on the photosensitive drum 26. When the developing cartridge 1 is installed on the drum unit 2 and starts to work, the photosensitive drum 26 drives the entire developing cartridge 1 through the worm 47, without the power receiving portion 40 receiving power from the printing forming device, without setting the power receiving portion, and the driving gear 41 may not be provided, thereby simplifying the structure of the developing cartridge 1.

[0153] Embodiment 2

[0154] This embodiment is generally the same as Embodiment 1, and the main difference lies in that the power receiving member 47 and the transmission assembly are arranged at the non-driving end of the developing cartridge, rather than the driving end.

[0155] Refer to Figures 11 - 13, According to one aspect of the present application, the present application provides a developing cartridge 1, which is used for detachably mounting on a drum unit 2. The drum unit 2 includes a photosensitive drum 26, a photosensitive gear 230 connected to one end of the photosensitive drum 26, and a first transmission member 231 connected to the other end of the photosensitive drum 26. The photosensitive gear 230 is used for receiving the driving force of an image forming apparatus, and the driving force of the photosensitive gear 230 is transmitted to the first transmission member 231 through the photosensitive drum 26. The developing cartridge 1 includes a cartridge body 10, a developing roller 131, a transmission assembly 400, a power receiving member 47, a rotating member 48, and an electrode. The cartridge body 10 is used for accommodating a developer, and the cartridge body 10 extends along a first direction. The developing roller 131 receives the driving force transmitted by the first transmission member 231 through the power receiving member 47. The developing roller 131 can rotate around a first rotation axis extending along the first direction. The developing roller 131 includes a roller shaft 1311 extending along the first direction. The transmission assembly 400 is connected to the first transmission member 231, and the transmission assembly 400 can rotate around a second rotation axis extending along the first direction. The rotating member 48 moves according to the rotation of the photosensitive gear 230. The electrode is electrically connected to the roller shaft 1311. Among them, the transmission assembly 400, the power receiving member 47, the rotating member 48, and the electrode are located at one end (i.e., the non-driving end) of the first transmission member 231 relative to the photosensitive gear 230.

[0156] The image forming apparatus can be a printer, a copier, etc. The drum unit 2 further includes a frame 20, and the photosensitive drum 26, the photosensitive gear 230, and the first transmission member 231 are all disposed within the frame 20. After the developing cartridge 1 is installed within the frame 20 of the drum unit 2, a processing cartridge is formed, and the processing cartridge is detachably mounted on the image forming apparatus to convey the developer to the image forming apparatus, so that the image forming apparatus can display an image on a paper.

[0157] The first transmission member 231 is used for transmitting the driving force transmitted by the photosensitive gear 230 to the transmission assembly 400. The transmission assembly 400 is used for transmitting the driving force transmitted by the first transmission member 231 to the developing roller 131, the rotating member 48, etc. The first transmission member 231 and the transmission assembly 400 can be transmission gears, or other structures that can transmit the driving force.

[0158] The electrode is used for conducting electricity to the developing roller 131. The electrode can be a metal material or a conductive resin material. Specifically, when the electrode is a conductive resin material, the conductive resin can be made into a bracket shape. The bracket-shaped conductive resin can not only conduct electricity to the developing roller 131, but also support the roller shaft 1311 of the developing roller 131.

[0159] In this embodiment, the rotating member 48 is integrally provided with the detected member, and is used for triggering a detection member within the image forming apparatus to transmit information about one or more specifications of the developing cartridge 1 or information about whether the developing cartridge 1 is a new developing cartridge to the image forming apparatus.

[0160] In an alternative embodiment, the power receiving member 47 is connected to the roller shaft 1311. The power receiving member 47 is rotatable about a first rotation axis and is configured to transmit the driving force transmitted by the first transmission member 231 to the developing roller 131.

[0161] The power receiving member 47 can be a transmission gear or other structure capable of transmitting the driving force. In this embodiment, a gear is used and the power receiving member 47 meshes with the first transmission member 231. The power receiving member 47 can be fixedly connected to the roller shaft 1311 so that the roller shaft 1311 rotates with the power receiving member 47 and they are relatively fixed. The power receiving member 47 can also have relative rotation with the roller shaft 1311 as long as the first sub-transmission member 131 can drive the roller shaft 1311 to rotate.

[0162] During assembly, the developing cartridge 1 can be first inserted into the drum unit 2 to form a process cartridge, and then the process cartridge can be inserted into the image forming apparatus. For the driving force transmission method of the process cartridge after being inserted into the image forming apparatus, specifically, please refer to Figure 11 and Figure 12 , the photosensitive gear 230 of the drum unit 2 receives the driving force of the image forming apparatus. The photosensitive gear 230 drives the photosensitive drum 26 and the first transmission member 231 to rotate, and the power receiving member 47 engaged with the first transmission member 231 rotates in a direction opposite to the rotation direction of the first transmission member 231. In this way, the power receiving member 47 can receive the driving force transmitted by the photosensitive gear 230 and achieve rotation.

[0163] In an alternative embodiment, the developing cartridge 1 further includes a rotatable toner supply roller 133 for supplying toner to the developing roller 131. The transmission assembly 400 includes a toner supply gear 43 that is connected to the power receiving member 47 and the toner supply roller 133 respectively. The toner supply gear 43 is rotatable about a third rotation axis extending in a first direction and is configured to transmit the driving force transmitted by the power receiving member 47 to the toner supply roller 133 to cause the toner supply roller 133 to rotate.

[0164] The toner supply gear 43 can be a transmission gear or other structure capable of transmitting the driving force. The toner supply gear 43 can be meshed with the power receiving member 47 through an intermediate transmission member such as a transmission gear. The toner supply gear 43 can be fixedly connected to the toner supply roller 133 so that the toner supply roller 133 rotates with the toner supply gear 43 and they are relatively fixed. The toner supply gear 43 can also have relative rotation with the roller shaft 1311 as long as the toner supply gear 43 can drive the toner supply roller 133 to rotate.

[0165] For the driving force transmission method after the first transmission member 231 drives the power receiving member 47 to rotate, please continue to refer to Figure 12 and Figure 13, specifically, the powder feeding gear 43 receives the driving force transmitted by the power receiving member 47 through the first intermediate transmission member 134. The powder feeding gear 43 drives the rotating member 48 to rotate through the second intermediate transmission member 135 meshing therewith. The powder feeding roller 133 fixedly connected to the powder feeding gear 43 rotates along with the powder feeding gear 43. In this way, the powder feeding roller 133 can receive the driving force transmitted by the photosensitive gear 230 and achieve rotation. After the rotating member 48 rotates, the rotating member 48 drives the components on the image forming device to rotate, so that the rotating member 48 can transmit information indicating one or more specifications of the developing cartridge or information indicating whether the developing cartridge is a new developing cartridge to the image forming device.

[0166] In an alternative embodiment, the powder feeding gear 43 is rotatably connected to the power receiving member 47, and the powder feeding gear 43 is fixedly connected to the powder feeding roller 133. In this way, the powder feeding roller 133 receives the driving force through the power receiving member 47 and the powder feeding gear 43 in a simple manner and with high efficiency.

[0167] In an alternative embodiment, the rotating member 48 is rotatably connected to the transmission assembly 400 to receive the driving force transmitted by the transmission assembly 400. In some embodiments, the rotating member 48 can also receive the driving force transmitted by the transmission assembly 400 in other moving manners, so as to transmit information indicating one or more specifications of the developing cartridge or information indicating whether the developing cartridge is a new developing cartridge to the image forming device.

[0168] The aforementioned power receiving member 47 is respectively connected to the roller shaft 1311 of the developing roller 131 and the first transmission member 231. The powder feeding gear 43 is respectively connected to the power receiving member 47 and the powder feeding roller 133, so that the power receiving member 47 transmits the driving force transmitted by the first transmission member 231 to the developing roller 131, and the power receiving member 47 transmits the driving force transmitted by the first transmission member 231 to the powder feeding roller 133 through the powder feeding gear 43. In this way, the structural arrangement of the developing roller 131 and the powder feeding roller 133 is more convenient, and the structure of the developing cartridge 1 is more miniaturized. In some embodiments, the power receiving member 47 is respectively connected to the powder feeding roller 133 and the first transmission member 231, and the powder feeding gear 43 is respectively connected to the power receiving member 47 and the developing roller 131, so that the power receiving member 47 transmits the driving force transmitted by the first transmission member 231 to the powder feeding roller 133, and the power receiving member 47 transmits the driving force transmitted by the first transmission member 231 to the developing roller 131 through the powder feeding gear 43.

[0169] In some embodiments, the developing cartridge 1 may further include a stirring frame 162. The stirring frame 162 extends in the first direction and is rotatable. The stirring frame 162 is used for stirring the developer. The stirring frame 162 is connected to the transmission assembly 400 to receive the driving force transmitted by the transmission assembly 400 and thus rotate. Specifically, please refer to Figure 12 and Figure 13, the transmission assembly 400 further includes a stirring gear 45. The stirring gear 45 receives the driving force transmitted by the powder feeding gear 43 through the second intermediate transmission member 135. The stirring gear 45 is meshed and connected with the rotating member 48 to transmit the driving force transmitted by the powder feeding gear 43 received by the stirring frame 162 to the rotating member 48, so that the rotating member 48 rotates.

[0170] In an alternative embodiment, the developing cartridge 1 further includes a third transmission member and a first shaft extending in the first direction. The third transmission member is located at one end (i.e., the driving end) of the photosensitive gear 230 relative to the first transmission member 231. The first shaft is connected to the transmission assembly 400 to transmit the driving force transmitted by the transmission assembly 400 to the third transmission member; the developing unit further includes a second shaft extending in the first direction. The second shaft is connected to the third transmission member to receive the driving force transmitted by the third transmission member, and the rotating member 48 is connected to the third transmission member to receive the driving force transmitted by the third transmission member.

[0171] In an alternative embodiment, the first shaft is a powder feeding roller.

[0172] In an alternative embodiment, the first shaft is rotatable or movable in the first direction.

[0173] In an alternative embodiment, the first shaft is fixedly connected to the power receiving member 47, and the second shaft is in transmission connection with the third transmission member.

[0174] By arranging the power receiving member 47, the transmission assembly 400, the rotating member 48, and the electrode at one end (non-driving end) of the first transmission member 231 relative to the photosensitive gear 230, that is, the transmission assembly 400, the rotating member 48, and the electrode are all located at one end (non-driving end) of the developing cartridge 1 in the first direction, and the photosensitive gear 230 is located at the other end (driving end) of the developing cartridge 1, the developing cartridge 1 has a simple structure and is convenient for miniaturization. The driving force received by the developing roller 131 and the rotating member 48 of the developing cartridge 1 is provided by the photosensitive gear 230, which improves the synchronization of the rotation of the developing roller 131, the rotating member 48, and the photosensitive gear 230.

[0175] In some embodiments, the transmission assembly and the rotating member may be arranged at the driving end of the processing cartridge as in the first embodiment. The power receiving member located at the second end of the developing cartridge receives the driving force from the first transmission member and transmits it to the developing roller. The power is transmitted to the first end of the developing cartridge through the developing roller, and then transmitted to the powder feeding roller, the stirring frame, and the rotating member of the developing cartridge through the transmission assembly. In other embodiments, the power of the power receiving member may also be transmitted to the first end of the developing cartridge through the powder feeding roller.

[0176] Embodiment Three

[0177] This embodiment is substantially the same as Embodiment 1, with the main difference being that the moving member 5 is provided on the drum assembly rather than on the developing cartridge.

[0178] As Figure 16 shown, a transmission assembly is provided at the first end 11 of the cartridge body. The transmission assembly is used to receive the power output by the image forming apparatus. The transmission assembly includes a driving portion, and the driving portion includes a power receiving portion 40 for receiving power and a driving gear 41 for transmitting power, which are integrally formed. The transmission assembly further includes a developing gear 42, a powder feeding gear 43, a first idler gear 491, a second idler gear 492, a third idler gear 493, and a stirring gear 45. The developing gear 42, the powder feeding gear 43, and the first idler gear 491 are all engaged with the driving gear 41 to receive power and rotate. The second idler gear 492 is simultaneously engaged with the first idler gear 491 and the third idler gear 493 to transmit the power from the first idler gear 491 to the third idler gear 493. The third idler gear 493 is engaged with the stirring gear 45 to transmit the power to the stirring gear 45. The developing gear 42 is fixedly installed at one end of the developing roller 131 and drives the developing roller 131 to rotate together. The powder feeding gear 43 is coaxially and fixedly installed at one end of the powder feeding roller and rotates together with the powder feeding roller. The stirring gear 45 is coaxially and fixedly installed at one end of the stirring frame and rotates together with the stirring frame. In this embodiment, the first idler gear 491, the second idler gear 492, the third idler gear 493, and the stirring gear 45 are all second-stage gears, that is, they include a large gear portion and a small gear portion on the same axis, so as to achieve the purpose of changing the rotation speed of the gear. In other embodiments, the number of gear stages can be set according to actual needs.

[0179] As Figure 16 and Figure 17As shown, the component to be detected includes a movable part and a moving part 5. The moving part 5 is arranged to move in response to the movement of the movable part, thereby triggering the detection part of the image forming apparatus. In this embodiment, the movable part is a rotating part 48. The rotating part 48 is rotatably installed at the first end 11. The rotating part 48 can be engaged with the stirring gear 45 and rotate following the stirring gear 45, and the rotating part 48 can move relative to the stirring gear 45 in the first direction. In other embodiments, the movable part may not be a rotating part, that is, it does not perform a rotational movement, but transmits power to the moving part 5 in other ways of movement. The rotating part 48 includes a tooth part 481, a toothless part 482, an abutting part 483, a force applying part 484, an accelerating part 485, and a mounting hole 486. The tooth part 481 and the toothless part 482 are arranged around the rotation direction of the rotating part 48 and jointly enclose a circle. The tooth part 481 is provided with a plurality of teeth along the rotation direction of the rotating part 48. The tooth part 481 is used to engage with the stirring gear 45 to cause the rotating part 48 to rotate. When the tooth part 481 faces the stirring gear 45, the rotating part 48 disengages from the stirring gear and the rotating part 48 no longer rotates following the stirring gear. The abutting part 483 is a protrusion having a length in the first direction and a width in the radial direction of the rotating part 48. The abutting part 483 is located within the radius range of the tooth part 481. The force applying part 484 is the outer surface of the rotating part 48. The force applying part 484 includes an accelerating part 485. The accelerating part 485 is an inclined surface or an arc surface extending along the rotation direction of the rotating part 48 and extending in the first direction. The mounting hole 486 is a through hole penetrating the rotating part 48 in the first direction.

[0180] As Figure 15 and Figure 18 shown, a protrusion is further provided on the first cover 18. The protrusion can act on the rotating part 48 to cause the rotating part 48 to move along its axial direction, that is, the first direction, thereby driving the moving part 5 to move, thereby triggering the detection part of the image forming apparatus.

[0181] As Figure 19 shown, the developing cartridge 1 further includes a storage medium 171. The storage medium 171 is used to store information of the developing cartridge 1. The image forming apparatus can identify the developing cartridge by reading the information of the developing cartridge.

[0182] As Figure 19 and Figure 21As shown, the drum assembly 2 includes a frame 20 for carrying the developing cartridge 1. On the frame 20, a right frame 21 and a left frame 22 are provided at intervals in the first direction. The drum assembly 2 is also provided with a photosensitive drum 26 rotatably supported by the frame 20. The photosensitive drum 26 is located at the front end of the drum assembly 2 in the second direction. A photosensitive gear 230 is provided at one end of the photosensitive drum 26 in the first direction and on the right frame 21. The photosensitive gear 230 is used to receive the power output by the image forming apparatus to drive the photosensitive drum 26 to rotate. The photosensitive drum 26 contacts the developing roller 131 on the developing cartridge 1, and the photosensitive drum 26 receives the developer transferred by the developing roller 131 to form an electrostatic latent image. The drum assembly 2 is also provided with a locking member 255 near the right frame 21. The locking member 255 is used to lock the developing cartridge 1 mounted on the drum assembly 2 to prevent the developing cartridge 1 from detaching.

[0183] Near the right frame 21 and the left frame 22 of the drum assembly 2, a first biasing member 251 and a second biasing member 252 are also provided. The first biasing member 251 abuts against the first pushing portion 182 to apply a pushing force, and the second biasing member 252 abuts against the second pushing portion 1212 to apply a pushing force, so that the developing cartridge 1 receives the pushing force applied by the drum assembly 2, ensuring that the developing roller 131 is in close contact with the photosensitive drum 26.

[0184] The detected assembly further includes a force-receiving member 31 and a moving member 5. The moving member is a swing rod in this embodiment. The force-receiving member 31 is rotatably connected to the moving member 5. The force-receiving member 31 includes a force-receiving end 311 and a first connection hole 312. The force-receiving end 311 is the front end of the force-receiving member 31 in the second direction, specifically a force-receiving inclined surface (arc surface). The force-receiving inclined surface extends forward in the second direction and extends leftward in the first direction. Its starting end in the second direction is farther from the photosensitive drum than the end, and the starting end in the first direction is farther from the left frame 22 than the end. The first connection hole 312 is located at the rear end of the force-receiving member 31 in the second direction.

[0185] The moving member 5 extends in the first direction and is provided with a first connection column 321 and a detected member 52. The first connection column 321 is the end of the moving member 5 close to the right frame 21. In this embodiment, the first connection column 321 is preferably a connecting cylinder and is rotatably connected to the force-receiving member 31 by means of shaft-hole cooperation. The rotation axis of the force-receiving member 31 is parallel to the first direction. In some embodiments, a connecting cylinder can be provided on the force-receiving member 31 and a connection hole can be provided on the moving member 5. The detected member 52 is the end of the moving member 5 close to the left frame 22, that is, the force-receiving member 31 and the detected member 52 are respectively located at both ends of the moving member 5 in the first direction. The detected member 52 extends forward in the second direction.

[0186] A positioning hole 53 is also provided on the movable member 5, and the positioning hole 53 is located between the first connecting column 321 and the detected member 52. A positioning column 1522 extending along the third direction is provided on the frame 20. The positioning column 1522 and the positioning hole 53 are matched with the axial hole so that the movable member 5 can be rotatably installed on the frame 20. The rotation axis of the movable member 5 is parallel to the third direction. In other embodiments, the rotation axis of the movable member 5 can also be in other directions.

[0187] The moving member 5 is also provided with an abutment block 324 near the right frame 21. In the first direction, the abutment block 324 is located between the positioning hole 53 and the first connecting column 321. The abutment block 324 extends downward along the third direction. The frame 20 is provided with a reset groove 1523 extending along the second direction. A first elastic member 155 that can be compressed and stretched along the second direction is placed in the reset groove 1523. The first elastic member 155 is preferably a compression spring. When the moving member 5 is installed on the frame 20, the abutment block 324 is located in the reset groove 1523, and the first elastic member 155 is located between the abutment block 324 and the inner wall of the reset groove 1523.

[0188] like Figure 14 and Figure 22 As shown, when the developing box 1 is installed on the drum assembly 2, in order to prevent the force-bearing member 31 from interfering with the installation of the developing box 1, the force-bearing member 31 can be first moved to rotate along the rotation axis so that the force-bearing member 31 avoids the developing box 1. After the developing box 1 is installed on the drum assembly 2, the force-bearing member 31 is moved again to reset the force-bearing member 31. During the process of the force-bearing member 31 swinging and resetting, the force-bearing end 311 of the force-bearing member 31 contacts the force-applying portion 484 of the rotating member 48 on the developing box 1, that is, the force-bearing end 311 abuts against the force-applying portion 484, and the force-applying portion 484 applies a rightward force to the force-bearing member 31, which is converted into a force for the force-bearing member 31 to move backward through the inclined surface of the force-bearing end 311, thereby driving the movable member 5 to swing. Specifically, with the positioning hole 53 as the swing center, the end of the movable member 5 connected to the force-bearing member 31 swings in the direction away from the photosensitive drum 26 (that is, swings backward), and the detected member 52 swings in the direction close to the photosensitive drum (that is, swings forward), and the first elastic member 155 is compressed.

[0189] The movable member of this embodiment is arranged on the drum assembly instead of the developing box, so that one drum assembly can be used with multiple developing boxes. There is no need to install the movable member on each developing box, which simplifies the structure of the developing box.

[0190] In addition, the moving member can also be configured to move along the first direction or rotate around the first direction.

[0191] Embodiment 4:

[0192] Unless otherwise specified, the structures of the developing cartridge 1 and the drum unit 2 in this embodiment are the same as those in the second embodiment. The difference is that the drum unit 2 does not transfer power to the developing cartridge 1. The drum unit 2 receives the voltage output by the image forming apparatus and transfers it to the developing cartridge 1. Moreover, the electrode 122 is provided on the drum unit 2 instead of the developing cartridge 1. The electrode 122 is electrically connected to the conductive member, and the voltage is transferred to the developing roller 131 and the powder feeding roller 133 of the developing cartridge through the conductive member.

[0193] As Figures 23 - 26 shown, in this embodiment, the electrode 122 is provided on the drum unit 2. Specifically, the electrode 122 is provided at the left frame 22. The electrode 122 is stably supported by the frame 20. The electrode 21 is used to contact the electrical output part in the image forming apparatus to receive the voltage output by the image forming apparatus. In this embodiment, the electrode is preferably a conductive steel sheet, which has advantages such as good conductivity, bendability, and resistance to damage. In other embodiments, it can be other conductive media. The electrode 122 includes two ends, namely the first contact part 611 and the second contact part 612. The first contact part 611 is exposed outside the left frame 22 and is used to directly contact the electrical output part. The second contact part 612 is bent to have a certain elasticity.

[0194] The drum unit 2 further includes a conductive member. The conductive member is arranged to extend along the first direction. Further, the conductive member is rotatably arranged around the axis in the first direction. In this embodiment, the conductive member is the paper guide roller 62. In other embodiments, it can also be other structures as long as it can transfer the voltage of the electrode 122 to the developing roller 131 and / or the powder feeding roller 133. The paper guide roller 62 extends along the first direction and is rotatably installed on the frame 20 and is rotatably supported by the right frame 21 and the left frame 22. When the processing cartridge works in the image forming apparatus, the paper guide roller 62 can guide the sheet for imaging to move to ensure that the sheet can be accurately imaged. The paper guide roller 62 is made of a metal material. In this embodiment, the paper guide roller 62 is preferably a steel shaft, or it can also be a shaft formed by conductive resin. One end of the paper guide roller 62 along the first direction and located at the left frame 22 is the third contact part 621, and one end located at the right frame 21 is the fourth contact part 622. The third contact part 621 contacts the second contact part 612 of the electrode 122 to receive the voltage transferred by the electrode 122.

[0195] A conductive member is provided at the first end 11 of the developing cartridge 1. The conductive member includes a first conductive member 63 and a second conductive member 64. Both the first conductive member 63 and the second conductive member 64 are supported by the first cover 18. In this embodiment, the first conductive member 63 is preferably a steel sheet. The first conductive member 63 is bent to form a fifth contact portion 631 and a sixth contact portion 632. The fifth contact portion 631 contacts the fourth contact portion 622 of the paper guide roller 62 to receive voltage, and the sixth contact portion 632 is used to contact the second conductive member 64 to transfer voltage. The second conductive member 64 is preferably a conductive spring. The second conductive member 64 includes a seventh contact portion 641 and an eighth contact portion 642. The seventh contact portion 641 contacts one end of the developing roller 131 located at the first end 11 along the first direction, so that the developing roller 131 is charged. The eighth contact portion 642 contacts one end of the powder feeding roller 133 located at the first end 11 along the first direction, so that the powder feeding roller 133 is charged. The charging of the developing roller 131 and the powder feeding roller 133 is beneficial to the adsorption of the developer. That is, in this embodiment, the electrode 122 for the drum assembly 2 to receive the voltage output by the image forming apparatus transfers the voltage to the first conductive member 63 of the developing cartridge 1 through the paper guide roller 62 on the drum assembly 2. The first conductive member 62 transfers the voltage to the developing roller 131 and the powder feeding roller 133 through the second conductive member. In some embodiments, it may also be that the first conductive member 63 directly contacts the developing roller 131 and the powder feeding roller 133.

[0196] In this embodiment, the developing cartridge 1 does not receive power from the drum assembly. A power receiving portion 40 is provided at the first end 11 of the developing cartridge 1. The power receiving portion 40 receives power and transfers the power to each gear at the first end 11.

[0197] Compared with the prior art in which the electrode is provided on the non-driving end of the developing cartridge, in this embodiment, the electrode is provided on the non-driving end of the drum assembly, which is beneficial to the structural simplification of the non-driving end of the developing cartridge.

[0198] Embodiment Five:

[0199] This embodiment is substantially the same as Embodiment Three, and the main difference is that: the storage medium 171 for storing the corresponding information of the developing cartridge is installed on the drum assembly 2 through the bracket 17.

[0200] Such as Figure 27As shown, the drum assembly 2 has a right frame 21 and a left frame 22 in the first direction, and a rear frame 24 and a front frame 23 in the second direction. On one side of the drum assembly 2 close to the front frame 23 in the second direction, a photosensitive drum 26 is provided. The photosensitive drum 26 is used to contact the developing roller on the developing cartridge to complete the printing work. A force - applying component 731 is provided at a position of the drum assembly 2 close to the rear frame 24 in the second direction. The force - applying component 731 is used to apply a force along the second direction to the developing cartridge when the developing cartridge is installed on the drum assembly 2, so that the developing roller on the developing cartridge is closely attached to the photosensitive drum 26 on the drum assembly 2. A locking member 255 is further provided at a position of the drum assembly 2 close to the right frame 21 in the first direction for removing the developing cartridge from the drum assembly 2. A clamping portion 723 is further provided at a position of the drum assembly close to the left frame 22 in the first direction. A bracket 17 for carrying the storage medium 171 can be buckled on the clamping portion 723.

[0201] As Figure 27 、 28 As shown, the clamping portion 723 has a housing 7231 extending in the first direction. A fixing rib 7232 is provided inside the housing 7231, and the fixing rib 7232 divides the inner cavity formed by the housing 7231 into two parts. The clamping portion 7231 further has a clamping protrusion 7233 at the top in the third direction. A clamping rib 7234 is further provided at one end of the clamping portion 723 close to the right frame 21 in the first direction.

[0202] As Figure 29 、 Figure 30 As shown, the bracket 17 of the first implementation manner of this embodiment is provided with a first mating portion 7211 and a second mating portion 7212 on the side facing the drum assembly 2 in the first direction. The first mating portion 7211 and the second mating portion 7212 have a first gap 7213 in the third direction. The first mating portion 7211 and the second mating portion 7212 are symmetrically arranged in the second direction and have a second gap 7214 in the middle. And the gap of the second gap 7214 between the first mating portions 7211 is larger than the gap of the second gap 7214 between the second mating portions 7212. When the bracket 17 is installed on the clamping portion 723 of the drum assembly 2, the first mating portion 7211 is at the top of the housing 7231 of the clamping portion 723 in the third direction, and the second mating portion 7212 is located in the two inner cavities formed by the housing 7231 and the fixing rib 7232 of the clamping portion 723. At this time, the top of the housing 7231 of the clamping portion 723 is fixed in the first gap 7213 between the first mating portion 7211 and the second mating portion 7212, the second gap 7214 between the fixing rib 7232 of the clamping portion 723 and the second mating portion 7212 is fixed, and the clamping protrusion 7233 is located in the second gap 7214 between the first mating portions 7211 and is fixed in cooperation with the second gap 7214 between the first mating portions 7211.

[0203] By providing such a mating portion that mates with the engaging portion 723 on the drum unit 2, the bracket 17 can be fixed to the drum unit 2 and thus will not fall off. A storage medium 721 for storing corresponding information of the developing cartridge is installed at the end of the bracket 17 in the third direction. When the developing cartridge is installed on the drum unit 2 and cooperates with the image forming apparatus, the image forming apparatus can still identify the information of the developing cartridge.

[0204] Furthermore, the bracket 17 that engages with the drum unit in such a snap-fit manner can be integrally formed or separately provided, and the storage medium can be directly installed on the bracket 17, or other elastic members, such as elastic sponges, can be provided between the chip holder and the drum unit. There is no excessive limitation here.

[0205] As Figure 31 、 Figure 32 shown, the bracket 17 of the second embodiment of this embodiment is different from the first embodiment in that the bracket 17 is provided with a plurality of claws. Specifically, a plurality of claws are provided on the side of the bracket 17 facing the drum unit 2 in the first direction, including a fixed claw 7215 and a limiting claw 7216. The bracket 17 is a split-type chip holder, divided into a first part 721a1 and a second part 721a2. The claws are provided on the first part 721a1, and the storage medium 171 is provided on the second part 721a2. An elastic member 724 is provided between the first part 721a1 and the second part 721a2, so that the second part 721a2 can move repeatedly in the third direction relative to the first part 721a1. The bracket 17 of this embodiment further has a first mating portion 7211, and there is a first gap 7213 between the first mating portion 7211 and the fixed claw 7215. When the bracket 17 cooperates with the engaging portion 723 on the drum unit 2, the fixed claw 7215 is snapped with the engaging rib 7234 on the engaging portion 723, and the first gap 7213 still fixedly cooperates with the top of the outer casing 7231 on the engaging portion 723 in the third direction in the same manner as the first embodiment. The limiting claw 7216 is used to engage with the second part 721a2 to prevent the second part 721a2 from separating from the first part 721a1.

[0206] Compared with the first embodiment, the only difference in the first embodiment lies in its snap-fit method and snap-fit position, but the final snap-fit effect is the same, and both fix the bracket 17 to the drum unit 2.

[0207] As Figure 33As shown, this is the third implementation manner of this embodiment. The only difference between this third implementation manner and the second implementation manner is that the bracket 17 is integrally formed, that is, the bracket 17 does not have a split first part 721a1 and a second part 721a2. An elastic sponge 725 is provided between the bracket 17 and the storage medium 171 to replace the elastic member 724 between the first part 721a1 and the second part 721a2 in the second implementation manner. The rest is the same as the second implementation manner and will not be elaborated here. In other implementation manners, the elastic sponge 725 can also be other elastic members as long as they have elasticity.

[0208] Furthermore, the fixing methods of the above three implementation manners can be mutually universal, including but not limited to combinations between different fixing methods and different brackets, and between different brackets and different storage media. Any combination can achieve the effect of this solution.

[0209] In this embodiment, the bracket and the storage medium are provided on the drum assembly rather than on the developing cartridge, so that one drum assembly can be used with multiple developing cartridges, and there is no need to install a storage medium on each developing cartridge, which simplifies the structure of the developing cartridge.

[0210] The above are only some implementation manners of the present invention. For those of ordinary skill in the art, without departing from the creative concept of the present invention, several deformations and improvements can be made, or the above technical solutions can be freely combined, including freely combining the technical features between the above different implementation manners. All of these belong to the protection scope of the present invention.

Claims

1. A developing cartridge that can be detachably combined with a drum unit having a photosensitive drum and a photosensitive gear, the photosensitive gear being provided at an end of the photosensitive drum and the photosensitive drum rotating together with the photosensitive gear, the processing cartridge being detachably mounted on an image forming apparatus, characterized in that, The developing cartridge includes: A cartridge body having a first end and a second end in a first direction, a third end and a fourth end in a second direction, and a fifth end and a sixth end in a third direction; A developing roller that rotates about an axis extending in the first direction; A detected member located at the second end for triggering a detection member of the image forming apparatus; A storage medium for storing information about the developing cartridge; An electrical contact surface located at the first end and electrically connected to the storage medium; and A power receiving member that receives power transmitted from the drum assembly and rotates, and is used to drive at least one of the developing roller and the detected member to move.

2. The developing cartridge according to claim 1, wherein, The power receiving member is provided at the first end, the power receiving member meshes with the photosensitive gear, and the rotation axis of the power receiving member intersects the first direction.

3. The developing cartridge according to claim 2, wherein, The power receiving member is a worm.

4. The developing cartridge according to claim 3, characterized in that, The photosensitive gear includes a second photosensitive gear, the second photosensitive gear is a helical gear, and the power receiving member meshes with the second photosensitive gear; The developing cartridge further includes a first cover provided at the first end of the cartridge body, and the power receiving member is rotatably provided on the first cover.

5. The developing cartridge according to claim 2, wherein, The developing cartridge further includes: a powder feeding roller that rotates about an axis in the first direction; A rotating member for driving the detected member to move; and A transmission assembly provided at the first end of the cartridge body, the transmission assembly includes: A developing gear for driving the developing roller to rotate; A powder feeding gear for driving the powder feeding roller to rotate; and A second transmission gear that meshes with the power receiving member and transmits power to the developing gear, the powder feeding gear, and the rotating member.

6. The developing cartridge according to claim 5, wherein, The transmission assembly further includes a driving portion coaxially provided with a power output unit of the image forming apparatus; The second transmission gear is coaxially provided with the driving portion and can drive the driving portion to rotate synchronously or rotate relative to the driving portion.

7. The developing cartridge according to claim 1, wherein, The drum assembly further includes a first transmission member that rotates with the photosensitive drum; The power receiving member is provided at the second end of the cartridge body, the power receiving member meshes with the first transmission member and rotates, and drives the developing roller to rotate.

8. The developing cartridge according to claim 7, wherein, The developing cartridge further includes: a powder feeding roller that rotates about an axis in the first direction; A rotating member for driving the detected member to move; and A transmission assembly provided at the first end or the second end of the cartridge body, the transmission assembly includes: A developing gear for rotating with the developing roller; A powder feeding gear for driving the powder feeding roller to rotate; and The power receiving member is provided coaxially with the developing roller and drives the developing roller to rotate, and the powder feeding gear and the rotating member receive the power of the power receiving member and rotate.

9. A drum assembly, characterized in that, Capable of being detachably combined with the developing cartridge according to any one of claims 7-8 to form a processing cartridge, the processing cartridge being detachably installed on an image forming apparatus, and the drum assembly includes: The photosensitive drum; The photosensitive gear that rotates together with the photosensitive drum and is provided at one end of the photosensitive drum in the axial direction of the photosensitive drum; The first transmission member rotates together with the photosensitive drum and is arranged at the other end of the photosensitive drum in the axial direction of the photosensitive drum.

10. A drum assembly, which can be detachably combined with a developing cartridge to form a processing cartridge, wherein the processing cartridge can be detachably mounted on an image forming device, characterized in that: The developing box comprises: The box body has a first end and a second end in the first direction, a third end and a fourth end in the second direction, and a fifth end and a sixth end in the third direction; a developing roller rotatably disposed about an axis in a first direction; and a movable member located at the first end; The drum assembly comprises: A detected member moves in response to the movement of the movable member, thereby triggering a detection member of the image forming device. In a first direction, a distance from the detected member to the second end is smaller than a distance from the detected member to the first end.

11. The drum assembly according to claim 10, wherein, The drum assembly also includes: Load bearing member; A moving member, the detected member is transmission-connected with the force-bearing member through the moving member, and the moving member and the detected member move along with the movement of the force-bearing member.

12. The drum assembly according to claim 11, wherein, The movable member is a rocker rod, which extends along a first direction. The force-bearing member and the detected member are respectively located at two opposite ends of the movable member in the first direction. The force-bearing member receives the force of the movable member, driving the movable member to swing around an axis parallel to the third direction, so that the movable member swings, thereby causing the detected member to trigger the detection member of the image forming device.

13. The drum assembly according to claim 12, wherein The movable member is a rotating member, which is rotatably arranged around an axis in the first direction and can move along the first direction; The force-bearing member is provided with a force-bearing inclined surface. When the rotating member moves along the first direction, a force is applied to the force-bearing inclined surface. The force-bearing inclined surface converts the force of the rotating member along the first direction into the swing of the moving member around the axis of the third direction.

14. The drum assembly according to claim 13, wherein, The force-bearing member is configured to be able to swing around an axis in a first direction. Before the developing box is installed in the drum assembly, the force-bearing member is moved to swing around the axis so that the force-bearing member avoids the developing box. After the developing box is installed in the drum assembly, the force-bearing member is moved to reset it, so that the force-bearing member contacts the rotating member and receives the force applied by it, thereby driving the movable member to swing around an axis parallel to the third direction.

15. The drum assembly according to claim 11, wherein, The moving member extends along a first direction, the force-bearing member and the detected member are respectively located at two opposite ends of the moving member in the first direction, and the force-bearing member receives the force of the movable member to drive the moving member to move along the first direction.

16. The drum assembly according to claim 11, wherein The moving member extends along a first direction, the force-bearing member and the detected member are respectively located at two opposite ends of the moving member in the first direction, and the force-bearing member receives the force of the movable member to drive the moving member to rotate around a rotation axis extending along the first direction.

17. A drum assembly, which can be detachably combined with a developing cartridge to form a processing cartridge, wherein the processing cartridge can be detachably mounted on an image forming device, characterized in that: The developing box comprises: A cartridge body having a first end and a second end in a first direction, a third end and a fourth end in a second direction, and a fifth end and a sixth end in a third direction; A developing roller rotatably provided about an axis in the first direction; And A conductive member electrically connected to the developing roller and provided at the first end of the cartridge body; The drum assembly includes: A frame including a right frame and a left frame opposite to each other in the first direction. When the developing cartridge is mounted to the drum assembly, the right frame is closer to the first end of the cartridge body than the left frame; and An electrode provided on the left frame for contacting an electrical output portion of an image forming apparatus to receive a voltage, the electrode being electrically connected to the conductive member to transfer the voltage to the developing roller.

18. The drum assembly according to claim 17, wherein, The drum assembly further includes a conductive member extending along the first direction, and both ends of the conductive member in the first direction are respectively in contact with the conductive member and the electrode to transfer the voltage.

19. The drum assembly according to claim 18, wherein, The conductive member is a paper guide roller.

20. The drum assembly according to claim 18, wherein The electrode includes a first contact portion and a second contact portion. The first contact portion is exposed outside the left frame for contacting the electrical output portion, and the second contact portion is for contacting the conductive member to transfer the voltage; The conductive member includes a first conductive member and a second conductive member that are mutually conductive. The first conductive member is for contacting the conductive member to receive the voltage, and the second conductive member is for transferring the voltage to the developing roller.

21. A drum unit that can be detachably combined with a developing cartridge to form a process cartridge, and the process cartridge is detachably mounted on an image forming apparatus, characterized in that, The drum assembly includes: A frame; A photosensitive drum rotatably provided about an axis in the first direction; A bracket detachably and fixedly mounted on the frame; and A storage medium for storing information of the developing cartridge, detachably mounted on the bracket.

22. The drum assembly according to claim 21, wherein, An elastic member is provided on the bracket so that the storage medium is movable relative to the frame.

23. The drum assembly according to claim 21, wherein, A clamping portion is provided on the frame, and the bracket is detachably and fixedly mounted on the clamping portion; The clamping portion has a housing body extending in the first direction. A fixing rib is provided inside the housing body, and the fixing rib divides the inner cavity formed by the housing body into two parts. The clamping portion further has a clamping protrusion at the top in the third direction; The bracket is provided with a first fitting portion and a second fitting portion. The first fitting portion and the second fitting portion have a first gap in the third direction. The first fitting portion and the second fitting portion are symmetrically arranged in the second direction and have a second gap in the middle. When the bracket is mounted on the clamping portion, the first fitting portion is at the top of the housing body in the third direction, the second fitting portion is located in the two inner cavities formed by the housing body and the fixing rib, the top of the housing body is fixed in the first gap, the second gap between the fixing rib and the second fitting portion is fixed, and the clamping protrusion is located in the second gap between the first fitting portions; The storage medium is detachably and fixedly provided on the bracket.

24. The drum assembly according to claim 21, wherein, A clamping portion is provided on the frame, and the bracket is detachably and fixedly mounted on the clamping portion; The clamping portion has a housing body extending in the first direction; the clamping portion further has a clamping rib at one end close to the inside of the frame in the first direction; The bracket includes a first part, a second part and an elastic member. The second part is located above the first part in the third direction. The elastic member is disposed between the first part and the second part such that the second part is movable relative to the first part in the third direction. The first part is provided with a fixed claw, a limiting claw and a first engaging portion. There is a first gap between the first engaging portion and the fixed claw. When the bracket is engaged with the engaging portion, the fixed claw is snap-fitted with the engaging rib, and the top of the outer shell is fixed in the first gap. The limiting claw is movably connected to the second part to prevent the second part from detaching from the first part. The storage medium is detachably and fixedly disposed on the second part.

25. The drum assembly according to claim 21, wherein, The frame is provided with an engaging portion, and the bracket is detachably and fixedly mounted on the engaging portion. The engaging portion has an outer shell extending in the first direction. The engaging portion further has an engaging rib at one end close to the interior of the frame in the first direction. The bracket includes a first engaging portion and a fixed claw. There is a first gap between the first engaging portion and the fixed claw. When the bracket is engaged with the engaging portion, the fixed claw is snap-fitted with the engaging rib, and the top of the outer shell is fixed in the first gap. The storage medium is detachably and movably disposed on the bracket through an elastic member.

Images