Developing box

Abstract

The utility model discloses a developing box which comprises a developing roller, a box body and a driving end bearing, the developing roller gear is arranged at one end of the developing roller and is positioned on the outer side of the driving end bearing; the power receiving piece is arranged on the outer side of the driving end bearing, and the power receiving piece is arranged to be directly meshed with the developing roller gear and transmit the rotating driving force to the developing roller; the driving end cover is arranged on the outer side of the driving end bearing, and the driving end cover is farther from the box body than the driving end bearing; the separation contact piece is arranged on the outer side of the driving end bearing, the separation contact piece is provided with a matching part, and the matching part downwards protrudes out of the box body or the driving end cover; the protective plate is arranged at the lower edge of the driving end cover; in the length direction of the box body, the separation contact piece is located between the driving end bearing and the protection plate. And the matching part is covered by the protective plate when being observed from the length direction of the box body. The assembly for separating or contacting the developing box and the photosensitive drum in the developing box is simple in structure, convenient to install and cost-saving.

Description

[0001] This application is a divisional application of the patent application with the application number 2023210136430, the application date of April 27, 2023, and the invention creation name of a developing cartridge. Technical Field

[0002] The utility model relates to the technical field of imaging devices, in particular to a developing cartridge. Background Art

[0003] An imaging device forms an image on a recording medium. Examples of the imaging device include an electrophotographic copier, an electrophotographic printer (such as a laser beam printer, an LED printer, etc.), a facsimile machine, a word processor, etc.

[0004] The imaging device is equipped with a developing cartridge that uses a developer to develop an electrostatic latent image on a photosensitive drum. The developing cartridge has a developing roller that can be rotatably supported in its housing, and develops by supplying toner stored in the housing from the developing roller to the photosensitive drum.

[0005] During the operation of the imaging device, the developing roller and the photosensitive drum need to be in tight contact. When the imaging device is not in operation, the developing roller and the photosensitive drum need to be separated by a certain distance to avoid problems such as the photosensitive drum being contaminated by the excess developer attached to the developing roller, the developing roller being deformed, or the photosensitive drum being worn due to long-term contact between the developing roller and the photosensitive drum.

[0006] As Figure 1 and Figure 2 shown, in an existing developing cartridge B1, one end in the length direction of the developing cartridge B1 is the driving end, and the other end is the conductive end. The separating member at the conductive end includes a swing rod 72 and a spring 73. One end of the spring 73 abuts against the swing rod 72, and the other end abuts against a bearing 46. The swing rod 72 is movably connected to the bearing 46. When the bearing 46 is fixedly installed on the developing cartridge B1, the swing rod 72 can rotate around a fixed shaft 46f under force and apply a force to the spring 73 to drive the developing cartridge B1 to rotate integrally. The separating member 120 at the driving end includes a swing rod 70 and a spring 71, and the connection relationship is similar to that at the conductive end.

[0007] As Figure 3 and Figure 4 shown, in an existing imaging device A1, there is a swing guide 80. A chute is provided on the swing guide 80 and can cooperate with the positioning posts at both ends of the developing cartridge B1. And the swing guide 80 is supported by a side plate 90 and can rotate along the direction of arrow N5 and the direction of arrow N6.

[0008] In addition, the imaging device A1 is further provided with a driving - end pressing member 150. The pressing member is supported by a bottom plate (not shown) and can move along the direction of arrow N7 and the direction of arrow N8, so that the surface of the photosensitive drum 10 contacts and separates from the developing roller 13. The imaging device is also provided with a conductive - end pressing member 151 and a conductive - end swing guiding member 81.

[0009] As Figure 4 shown, the second contact surface 151b of the conductive - end pressing member 151 contacts the first contact surface 72a of the swing rod 72. The swing rod 72 rotates along the direction of arrow NH9 against the biasing force of the spring 73. The third contact surface 72c of the swing rod 72 then compresses the spring 73 and is subjected to the biasing force FH10. At this time, the swing rod 72 is also subjected to the acting force FH11 of the swing guiding member 151, so that a moment balancing the moment MH10 acts on the swing rod 70. Therefore, an external force of the force FH11 acts on the developing cartridge B1. The developing cartridge is forced to rotate, so that the developing roller 13 contacts the photosensitive drum 10.

[0010] As Figure 5 shown, the conductive - end pressing member 151 moves a distance δh7 along the direction of arrow NH8. Therefore, the developing cartridge B1 rotates along the direction of arrow N5 with the supported protruding portion 81g of the swing guiding member 81 as the center, and the developing roller 13 and the photosensitive drum 10 are spaced apart by a distance δ8.

[0011] Based on considerations of image quality and the service life of the developing roller and the photosensitive drum, a new structure is expected to separate the developing roller from the photosensitive drum when the imaging device is not working and to make the developing roller contact the photosensitive drum when the imaging device is working. Summary of the Utility Model

[0012] According to a first aspect of the present utility model, a developing cartridge is provided, comprising:

[0013] A developing roller;

[0014] A cartridge body;

[0015] A driving - end bearing, arranged at one end of the cartridge body, and one end of the developing roller is supported by the driving - end bearing;

[0016] A conductive - end end - cap, arranged at the other end of the cartridge body, and the other end of the developing roller is supported by the conductive - end end - cap;

[0017] A developing - roller gear, arranged at one end of the developing roller and located outside the driving - end bearing;

[0018] A power - receiving member, arranged outside the driving - end bearing, and the power - receiving member is arranged to directly mesh with the developing - roller gear and transmit the rotational driving force to the developing roller;

[0019] The drive end cover is arranged on the outer side of the drive end bearing, and the drive end cover is farther from the box body than the drive end bearing;

[0020] The separating contact member is arranged on the outer side of the drive end bearing. The separating contact member is provided with a fitting portion, and the fitting portion protrudes downward from the box body or the drive end cover;

[0021] The guard plate is arranged at the lower edge of the drive end cover;

[0022] In the length direction of the box body, the separating contact member is located between the drive end bearing and the guard plate;

[0023] Viewed from the length direction of the box body, the fitting portion is covered by the guard plate.

[0024] In some embodiments, the guard plate is arranged at the lower edge of the side surface of the drive end cover.

[0025] In some embodiments, in the height direction, the separating contact member does not protrude beyond the guard plate.

[0026] In some embodiments, the separating contact member further includes a connecting portion, and the connecting portion is connected to the drive end bearing.

[0027] In some embodiments, the connecting portion is arranged at one end of the separating contact member, and the protruding portion is arranged at the other end of the separating contact member.

[0028] In some embodiments, the separating contact member can move between a first position and a second position; when the separating contact member is in the second position, it is closer to the developing roller than in the first position.

[0029] In some embodiments, the power receiving member includes a cylindrical portion and a gear portion, and the gear portion is directly meshed with the developing roller gear.

[0030] In some embodiments, the power receiving member further includes an elastic member, the elastic member is arranged in the cavity of the gear portion, one end of the elastic member abuts against the cylindrical portion, and the other end of the elastic member abuts against the bottom of the cavity of the gear portion.

[0031] In some embodiments, the power receiving member further includes an elastic member, the elastic member is arranged in the cavity of the gear portion, one end of the elastic member abuts against the cylindrical portion, and the other end of the elastic member abuts against the bottom of the cavity of the gear portion.

[0032] In some embodiments, the power receiving member includes a coupling and a gear portion, and the gear portion is directly meshed with the developing roller gear.

[0033] Advantages of the present utility model: In the developing cartridge of the present utility model, the component structure for separating or contacting the developing cartridge and the photosensitive drum is simple, easy to install, and cost-saving. Description of the Drawings

[0034] Figure 1 Schematic exploded view of the driving end of the developing cartridge of the prior art;

[0035] Figure 2 Schematic exploded view of the conductive end of the developing cartridge of the prior art;

[0036] Figure 3 Internal structure diagram of the imaging device of the prior art;

[0037] Figure 4 Schematic diagram of the separating member when the developing roller contacts the photosensitive drum of the prior art;

[0038] Figure 5 Schematic diagram of the separating member when the developing roller separates from the photosensitive drum of the prior art;

[0039] Figure 6 Schematic structural diagram of the developing cartridge of the first embodiment of the present utility model from one angle;

[0040] Figure 7 Schematic structural diagram of the developing cartridge of the first embodiment of the present utility model from another angle;

[0041] Figure 8 Schematic exploded structural diagram of the driving end of the developing cartridge of the first embodiment of the present utility model;

[0042] Figure 9 Schematic exploded structural diagram of the conductive end of the developing cartridge of the first embodiment of the present utility model;

[0043] Figure 10 Schematic structural diagram of the conductive end bearing and separating assembly of the developing cartridge of the first embodiment of the present utility model;

[0044] Figure 11 Schematic structural diagram of the conductive end bearing and separating contact member of a variant of the developing cartridge of the first embodiment of the present utility model;

[0045] Figure 12 Schematic structural diagram of the conductive end bearing and separating assembly of the developing cartridge of the second embodiment of the present utility model from one angle;

[0046] Figure 13 Schematic structural diagram of the conductive end bearing and separating assembly of the developing cartridge of the second embodiment of the present utility model from one angle;

[0047] Figure 14Schematic diagram of the structure of the conductive end bearing and the separation contact member at an angle of a variant of the developing cartridge according to the second embodiment of the present invention;

[0048] Figure 15 Schematic diagram of the structure of the conductive end bearing and the separation contact member of the developing cartridge according to the third embodiment of the present invention;

[0049] Figure 16 Schematic diagram of the structure of the conductive end bearing and the separation contact member of the developing cartridge according to the fourth embodiment of the present invention;

[0050] Figure 17 Schematic diagram of the structure of the conductive end bearing and the separation contact member of a variant of the developing cartridge according to the fourth embodiment of the present invention;

[0051] Figure 18 Schematic diagram of the structure of the conductive end bearing and the separation assembly of the developing cartridge according to the fifth embodiment of the present invention;

[0052] Figure 19 Schematic diagram of the structure of the drive end bearing and the separation assembly of the developing cartridge according to the fifth embodiment of the present invention;

[0053] Figure 20 Schematic diagram of the structure of the developing cartridge according to the fifth embodiment of the present invention;

[0054] Figure 21 Schematic diagram of the structure of the drive end bearing and the separation assembly of the developing cartridge according to the sixth embodiment of the present invention;

[0055] Figure 22 Exploded view of the drive end of the developing cartridge according to the sixth embodiment of the present invention;

[0056] Figure 23 Partial cross-sectional view of the drive end of the developing cartridge according to the sixth embodiment of the present invention;

[0057] Figure 24 Schematic diagram of the structure of the drive end of the processing cartridge according to the seventh embodiment of the present invention, with the drive end cover omitted in the figure;

[0058] Figure 25 For Figure 24 Enlarged schematic view of part A in;

[0059] Figure 26 Partial structure schematic diagram of the developing cartridge according to the seventh embodiment of the present invention;

[0060] Figure 27 Schematic diagram of the structure of the drive end of the developing cartridge according to the seventh embodiment of the present invention after removing the force transmission member;

[0061] Figure 28Schematic diagram of the cooperation between the separation component and the driving end pressing member of the developing cartridge according to the seventh embodiment of the present invention;

[0062] Figure 29 Schematic diagram of the structure of the developing cartridge according to the eighth embodiment of the present invention, with the driving end cover omitted in the figure;

[0063] Figure 30 Partial structure schematic diagram of the developing cartridge according to the ninth embodiment of the present invention;

[0064] Figure 31 Overall structure schematic diagram of the developing cartridge according to the tenth embodiment of the present invention;

[0065] Figure 32 Structure schematic diagram of the developing cartridge according to the tenth embodiment of the present invention with the driving end cover omitted;

[0066] Figure 33 Schematic diagram of a structure at an angle of the cooperation between the driving end cover and the component to be detected according to the tenth embodiment of the present invention;

[0067] Figure 34 Schematic diagram of another structure at an angle of the cooperation between the driving end cover and the component to be detected according to the tenth embodiment of the present invention;

[0068] Figure 35 Structure schematic diagram of the driving end cover according to the tenth embodiment of the present invention;

[0069] Figure 36 Schematic diagram of the structure of the component to be detected at an angle according to the tenth embodiment of the present invention;

[0070] Figure 37 Schematic diagram of the structure of the component to be detected at another angle according to the tenth embodiment of the present invention;

[0071] Figure 38 Structure schematic diagram of the rotating member according to the tenth embodiment of the present invention. Detailed description of the specific implementation

[0072] 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 fall within the scope of protection of the present invention.

[0073] 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" and "second" may explicitly or implicitly include at least one such feature. In the description of the present utility model, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0074] In the present utility model, unless otherwise clearly specified and defined, terms such as "mounted", "connected", "fixed", etc. 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, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, 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.

[0075] In the present utility model, unless otherwise clearly specified and defined, 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", "below" and "beneath" 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.

[0076] In the above description, descriptions referring to terms such as "an embodiment", "some embodiments", "an example", "a specific example", or "some examples", etc. mean 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 may 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.

[0077] Embodiment 1

[0078] As Figure 6 and Figure 7 shown, this embodiment provides a developing cartridge 200, which includes a developing frame, a developing roller 220, a stirring frame (not shown), a driving assembly, an electrode assembly 240, and a separating assembly.

[0079] As Figure 6 and Figure 7 shown, the developing frame includes a cartridge body 210, a driving end bearing 211, a conductive end cover 212, and a driving end cover 213. One end in the length direction of the developing frame is the driving end, and the other end is the conductive end. The cartridge body 210 has a powder bin inside for accommodating a developer, and the developer can be toner. The driving end bearing 211 is provided on the end face of the driving end of the cartridge body 210, and the driving end cover 213 is provided outside the driving end bearing 211, that is, the driving end cover 213 is farther from the cartridge body 210 than the driving end bearing 211. The conductive end cover 212 is provided on the end face of the conductive end of the cartridge body 210, that is, the conductive end cover 212 and the driving end cover 213 are respectively located outside the two ends in the length direction of the cartridge body 210.

[0080] As Figure 6 and Figure 7 shown, the developing roller 220 is rotatably supported on the developing frame. Specifically, the length direction of the developing roller 220 is the same as the length direction of the developing frame, and the rotation axis of the developing roller 220 extends along the length direction of the developing roller 220. Both ends of the developing roller 220 are respectively supported by the driving end bearing 211 and the conductive end cover 212.

[0081] The stirring frame is rotatably supported on the developing frame and is located inside the powder bin of the cartridge body 210. Specifically, both ends of the stirring frame are supported on the driving end bearing 211 and the conductive end cover 212. The length direction of the stirring frame is the same as the length direction of the developing frame. The stirring frame can rotate circumferentially along its axis in the length direction. The stirring frame can have one or more blades, and the blades are driven to rotate to stir the developer in the powder bin, prevent the developer in the powder bin from caking, and at the same time, the developer can be conveyed towards the developing roller 220 and adsorbed by the charged developing roller 220.

[0082] As Figure 6 and Figure 8As shown in the figure, the driving assembly is arranged on the outer side of the driving end bearing 211 (the side facing away from the housing 210), and includes a power receiving member 231 and a gear set. The power receiving member 231 is used to receive the driving force of the imaging device A1 and transmit the driving force through the gear set, thereby driving the developing roller 220 and the stirring frame to rotate. The gear set includes a developing roller gear 232 and a stirring frame gear 233. The developing roller gear 232 is fixed at one end of the shaft of the developing roller 220 in the length direction and is located outside the driving end bearing 211. The developing roller gear 232 meshes with the power receiving member 231, so that the developing roller 220 can receive the driving force and rotate. The stirring frame gear 233 is fixed at one end of the stirring frame in the length direction and is located outside the driving end bearing 211. The stirring frame gear 233 meshes with the power receiving member 231, so that the stirring frame can receive the driving force and rotate. Both the developing roller gear 232 and the stirring frame gear 233 can be directly or indirectly meshed with the power receiving member 231.

[0083] As Figure 7 and Figure 9 As shown in the figure, the electrode assembly 240 is arranged at the conductive end of the developing frame and is located inside the conductive end cover 212. The conductive end cover 212 is provided with an opening, and at least a part of the electrode assembly 240 can be exposed from the opening, so as to be electrically connected to the imaging device A1. The electrode assembly 240 is also electrically connected to the other end of the developing roller 220 in the length direction, so that the developing roller 220 is charged and can adsorb the developer.

[0084] As Figure 9 and Figure 10 As shown in the figure, the separation assembly can receive the acting force of the imaging device A1, drive the developing cartridge 200 to move in the direction close to or away from the photosensitive drum, so that the developing roller 220 contacts or separates from the photosensitive drum. The separation assembly can be arranged at the driving end of the developing frame, or can be arranged at the conductive end of the developing frame, or can be arranged at both the driving end and the conductive end of the developing frame at the same time.

[0085] In this embodiment, the separation assembly includes a separation contact member 250. The separation contact member 250 is arranged on the developing frame and can receive the acting force of the imaging device A1 and elastically deform between a first position and a second position. The separation contact member 250 in this embodiment is equivalent to the swing rod 72 in the prior art.

[0086] Specifically, as Figure 9 and Figure 10 shown in the figure, the separation contact member 250 includes a connecting portion 250a, a rod portion 250b and a mating portion 250c which are sequentially connected. That is, the connecting portion 250a is one end of the separation contact member 250, and the mating portion 250c is the other end of the separation contact member 250. The connecting portion 250a is used to assemble the separation contact member 250 on the developing frame, and the mating portion 250c is used to receive the acting force of the imaging device A1.

[0087] As Figure 9 and Figure 10 shown, taking the separation contact member 250 disposed at the conductive end of the developing frame as an example, a support column 2121 is provided inside the conductive end cap 212. The support column 2121 protrudes from the inner surface of the conductive end cap 212. The separation contact member 250 is detachably connected to the support column 2121. Specifically, a through hole is provided on the connecting portion 250a, and the separation contact member 250 is assembled on the conductive end cap 212 by sleeving the through hole on the support column 2121, and can rotate around the support column 2121. The length direction of the rod portion 250b extends in a direction intersecting the length direction of the developing frame. One end of the rod portion 250b extends to a position close to the edge of the conductive end cap 212. The engaging portion 250c is provided at the end of the rod portion 250b, so as to be exposed from the conductive end cap 212, facilitating cooperation with the conductive end pressing member 151 of the imaging device A1 to receive the acting force.

[0088] In some other embodiments, the connecting portion 250a can also be adhered, welded, or snap-fixed to the conductive end cap 212.

[0089] Furthermore, as Figure 9 and Figure 10 shown, a first protrusion 251 is further formed inside the conductive end cap 212. The first protrusion 251 is disposed close to the support column 2121 and is located below the support column 2121. The number of the first protrusions 251 is two, and the two first protrusions 251 clamp both sides of the separation contact member 250.

[0090] Furthermore, as Figure 9 and Figure 10 shown, the separation contact member 250 is made of an elastic material and can generate elastic deformation. A restricting portion 2122 is further provided inside the conductive end cap 212. The restricting portion 2122 is located on the side of the separation contact member 250 away from the developing roller 220 and can form a block for the separation contact member 250 to restrict the movement of the separation contact member 250 in the direction away from the developing roller 220. Without being acted upon by an external force, the separation contact member 250 is located at the position in contact with the restricting portion 2122, and the separation contact member 250 does not deform. At this time, the position where the separation contact member 250 is located is the first position, and the second position is located closer to the developing roller 220 (or closer to the photosensitive drum) than the first position.

[0091] When the separation contact member 250 is in the first position, the developing cartridge 200 is located away from the photosensitive drum, and the developing roller 220 is separated from the photosensitive drum. When the separation contact member 250 moves from the first position to the second position, the developing roller 220 comes into contact with the photosensitive drum.

[0092] As Figure 4 、Figure 9 and Figure 10 As shown in Figure 10 , when the imaging device A1 is working (during a printing task), the conductive end pressing member 151 in the imaging device A1 moves along the NH7 direction and abuts against the engaging portion 250c of the separating contact member 250, applying a force FH11 (pushing force) to the separating contact member 250. The portion of the separating contact member 250 below the first protrusion 251 deforms from the first position to the second position. At the same time, the force FH11 of the conductive end pressing member 151 also acts on the developing cartridge 200, causing the developing cartridge 200 to rotate and move closer to the photosensitive drum, so that the developing roller 220 contacts the photosensitive drum. The deformation of the separating contact member 250 generates a biasing force on the conductive end pressing member 151, and the conductive end pressing member 151 also generates a reaction force in the opposite direction to the biasing force. The reaction force acts on the developing cartridge 200, enabling the developing roller 220 to further press against the photosensitive drum. The biasing force generated by the deformation of the separating contact member 250 can also play a buffering role, enabling the developing roller 220 and the photosensitive drum to better contact and ensuring the developing quality.

[0093] As Figure 5 , Figure 9 and Figure 10 As shown in Figure 9 and Figure 10 , after the imaging device A1 finishes printing, the conductive end pressing member 151 in the imaging device A1 moves along the NH8 direction. The conductive end pressing member 151 abuts against the engaging portion 250c of the separating contact member 250 and applies a force to cause the entire developing cartridge 200 to rotate in the direction away from the photosensitive drum (such as the N5 direction in Figure 5 ), so that the developing roller 220 and the photosensitive drum are spaced apart by a distance δ8. At the same time, the elastic deformation of the separating contact member 250 recovers, deforming from the second position to the first position, and no longer deforming in the direction away from the developing roller 220 after contacting the limiting portion 2122.

[0094] It should be noted that the above separating assembly is not limited to being arranged at the conductive end, and can also be arranged at the driving end, or can be arranged at both the driving end and the conductive end. When arranged at the driving end, the separating contact member 250 is arranged outside the driving end bearing 211, and structures such as a support column 2121, a first protrusion 251, and a limiting portion 2122 are arranged outside the driving end bearing 211. The connection method is the same as that when the separating assembly is arranged at the conductive end, and will not be elaborated here.

[0095] As a variant of the first embodiment, as Figure 11 ​​As shown, the separating component can also be integrally formed with the conductive end cap 212, and the first protrusion 251 is cancelled. Optionally, the entire separating component and the conductive end cap 212 can be made of POM material. Specifically, the separating component is the separating contact 250. The separating contact 250 includes a connecting portion 250a, a rod portion 250b, and a mating portion 250c that are connected in sequence. That is, the connecting portion 250a is one end of the separating contact 250, and the mating portion 250c is the other end of the separating contact 250. The connecting portion 250a is used to assemble the separating contact 250 on the developing frame, and the mating portion 250c is used to receive the acting force of the imaging device A1. Its working process is the same as that of the above separating component. When the imaging device A1 works, after the separating contact 250 is acted on by the conductive end pressing member 151 of the imaging device A1, it will elastically deform itself, causing the developing cartridge 200 to be forced to rotate in the direction close to the photosensitive drum, so that the developing roller 220 contacts the photosensitive drum. When the imaging device A1 finishes printing, the separating contact 250 is acted on by the conductive end pressing member 151, causing the developing roller 220 and the photosensitive drum to be separated by a certain distance, realizing the separation of the developing roller 220 and the photosensitive drum.

[0096] The separating component of this embodiment has a simple structure. By cancelling the spring structure in the prior art, the separating component can also achieve the same separating effect, thus simplifying the structure, having a simple installation, and saving costs.

[0097] Embodiment Two

[0098] This embodiment provides another developing cartridge 200. Compared with Embodiment One, the difference lies in the different structure of the separating component.

[0099] In this embodiment, as Figure 12 shown, the separating component includes a separating contact 250 and a first baffle 253. The first protrusion 251 structure in Embodiment One is cancelled. The separating contact 250 in this embodiment is not made of an elastic material and cannot elastically deform itself. The other structures of the separating contact 250 are the same as those in Embodiment One.

[0100] As Figure 12 and Figure 13 shown, the separating contact 250 is rotatably arranged on the conductive end cap 212 and can receive the acting force of the imaging device A1 and move between a first position and a second position, that is, the separating contact 250 can rotate around the support column 2121. A second protrusion 250d is provided on the separating contact 250. The second protrusion 250d is arranged at the rod portion 250b of the separating contact 250 and is located on the side of the separating contact 250 facing the developing roller 220.

[0101] As Figure 12 and Figure 13As shown, the first baffle 253 is disposed on the inner side surface of the conductive end cap 212. The first baffle 253 is located on the side of the separation contact member 250 facing the developing roller 220. At least a part of the first baffle 253 is made of an elastic material, and this part of the first baffle 253 can elastically deform when stressed; alternatively, the entire first baffle 253 can be made of an elastic material. For example, the first baffle 253 is an elastic silica gel plate.

[0102] When the separation contact member 250 is in the first position, the second protrusion 250d and the first baffle 253 may be in a non-contact state, or may be in a contact state without mutual acting force.

[0103] When the separation contact member 250 rotates from the first position to the second position under the action of the pressing member 151 at the conductive end of the imaging device A1, the acting force of the pressing member 151 at the conductive end also acts on the developing cartridge 200. The developing cartridge 200 is stressed and rotates in the direction close to the photosensitive drum, so that the developing roller 220 contacts the photosensitive drum; at the same time, during the rotation of the separation contact member 250, the second protrusion 250d presses against the first baffle 253, and the first baffle 253 deforms, generating a biasing force on the separation contact member 250 along the direction of moving the separation contact member 250 from the second position to the first position. The separation contact member 250 also generates a reaction force in the direction opposite to the biasing force, and the reaction force acts on the developing cartridge 200, which can make the developing roller 220 further close to the photosensitive drum. The biasing force generated by the deformation of the first baffle 253 can also play a buffering role, enabling the developing roller 220 and the photosensitive drum to better contact and ensuring the developing quality.

[0104] It should be noted that the above separation assembly is not limited to being disposed at the conductive end, and can also be disposed at the driving end, or can be disposed at both the driving end and the conductive end.

[0105] In some embodiments, the structures of the separation assemblies at the conductive end and the driving end may be the same or different. For example, the separation assembly as in Embodiment 2 is disposed at the conductive end, and the separation assembly as in Embodiment 1 is disposed at the driving end, or vice versa. There is no limitation here.

[0106] As a variant of Embodiment 2, as Figure 14As shown, the number of the first baffles 253 can be two. The interval between the two first baffles 253 gradually decreases along the direction from the first position to the second position, that is, the two first baffles 253 are in a "V" shape. At the first position, the second protrusion 250d of the separation contact member 250 can be inserted between the two first baffles 253 and can be in contact with the first baffles 253 or not. During the process that the separation contact member 250 rotates from the first position to the second position under the action of the pressing force of the conductive end pressing member 151, the second protrusion 250d presses the first baffles 253, causing the first baffles 253 to elastically deform and generating a biasing force on the separation contact member 250 along the direction of moving the separation contact member 250 from the second position to the first position.

[0107] The other structures of the developing cartridge 200 are similar to those of the first embodiment and will not be described in detail here.

[0108] Embodiment Three

[0109] This embodiment provides a developing cartridge 200. Compared with the first embodiment and the second embodiment, the difference is that the separation contact member 250 is a fixed structure, and the support column 2121 can be omitted.

[0110] In this embodiment, as Figure 15 shown, the separation contact member 250 is fixedly arranged inside the conductive end cap 212. The structure of the separation contact member 250 is the same as that of the first embodiment and the second embodiment. The separation contact member 250 and the conductive end cap 212 can be an integrally formed structure or a split structure, and are fixed inside the conductive end cap 212 by means of pasting, welding, snapping or other fixing methods.

[0111] The separation contact member 250 contacts the conductive end pressing member 151 of the imaging device A1 through the engaging portion 250c, thereby receiving the acting force of the imaging device A1 and driving the developing cartridge 200 to move between the position where the developing roller 220 contacts the photosensitive drum and the position where the developing roller 220 separates from the photosensitive drum.

[0112] The fixed separation contact member 250 in this embodiment has a simple structure and does not require other structures to be provided.

[0113] The separation contact member 250 in this embodiment can be arranged at one end or both ends of the developing frame.

[0114] The other structures of the developing cartridge 200 are similar to those of the first embodiment and will not be described in detail here.

[0115] Embodiment Four

[0116] This embodiment provides a developing cartridge 200. Compared with the third embodiment, the difference is that the separation assembly includes a separation contact member 250 and an elastic member 254a.

[0117] In this embodiment, as Figure 16 shown, the separation contact member 250 is fixedly arranged inside the conductive end cap 212, and the elastic member 254a is arranged on the side of the separation contact member 250 away from the photosensitive drum; specifically, the elastic member 254a is arranged on the side of the mating portion 250c of the separation contact member 250 away from the photosensitive drum, that is, the elastic member 254a also protrudes outside the conductive end cap 212. The elastic member 254a can be a silica gel block.

[0118] When the imaging device A1 works, the conductive end pressing member 151 of the imaging device A1 abuts against one end of the elastic member 254a, applying a force to the elastic member 254a, and this force also acts on the separation contact member 250 and the entire developing cartridge 200, driving the developing cartridge 200 to move from the position where the developing roller 220 is separated from the photosensitive drum to the position where the developing roller 220 is in contact with the photosensitive drum; at the same time, the elastic member 254a is squeezed and deformed, generating a squeezing force on the separation contact member 250, which can play a buffering role and enable the developing roller 220 and the photosensitive drum to contact better.

[0119] As a variant of Embodiment 4, as Figure 17 shown, the elastic member can be a spring piece 254d. One end of the spring piece 254d can be connected to the separation contact member 250, and the other end extends to the side of the mating portion 250c away from the photosensitive drum, and the other end of the spring piece 254d does not contact the mating portion 250c, that is, there is a gap between the spring piece 254d and the mating portion 250c of the separation contact member 250.

[0120] When the imaging device A1 works, the conductive end pressing member 151 abuts against the other end of the spring piece 254d, applying a force to the spring piece 254d, and this force also acts on the separation contact member 250 and the entire developing cartridge 200, driving the developing cartridge 200 to move in the direction of approaching the photosensitive drum, and the developing roller 220 is in contact with the photosensitive drum; at the same time, when the spring piece 254d is stressed, it deforms, and its other end deforms in the direction of approaching the mating portion 250c, and the gap between the two becomes smaller or completely contacts, which can generate a squeezing force on the separation contact member 250 and also play a buffering role, enabling the developing roller 220 and the photosensitive drum to contact better. The spring piece 254d and the separation contact member 250 can be integrally injection molded.

[0121] The separation contact member 250 in this embodiment can only have the mating portion 250c protruding outside the conductive end cap 212.

[0122] The separation assembly of this embodiment can be arranged at one end or both ends of the developing frame.

[0123] The other structures of the developing cartridge 200 are similar to those in Embodiment 1 and will not be described in detail here.

[0124] Embodiment 5

[0125] This embodiment provides a developing box 200, which is different from the first to fourth embodiments in that the separation component includes a separation contact member 250 and an elastic member 254b.

[0126] In this embodiment, Figure 18 As shown, the separation contact member 250 is rotatably disposed on the conductive end cover 212, and can receive the force of the imaging device A1 and move between the first position and the second position; that is, the separation contact member 250 can rotate around the support column 2121, and a first connecting block 250e is provided on the separation contact member 250, and the first connecting block 250e is disposed on one end of the connecting portion 250a of the separation contact member 250, that is, the first connecting block 250e and the matching portion 250c are respectively located at different ends of the separation contact member 250.

[0127] like Figure 18 As shown, the elastic member 254b connects the separation contact member 250 and the developing frame. Specifically, a second connecting block 2124 is provided on the inner side of the conductive end cover 212. One end of the elastic member 254b is connected to the first connecting block 250e on the separation contact member 250, and the other end is connected to the second connecting block 2124. In this embodiment, the elastic member 254b is a tension spring, which is stretched and deformed when subjected to force. When the separation contact member 250 is in the first position, the developing box 200 is located away from the photosensitive drum, the developing roller 220 is separated from the photosensitive drum, and the elastic member 254b is not stretched. When the separation contact member 250 moves from the first position to the second position, the developing roller 220 contacts the photosensitive drum, and the elastic member 254b is stretched and deformed.

[0128] When the imaging device A1 is working (during a printing task), the conductive end pressing member 151 in the imaging device A1 moves along the NH7 direction and abuts against the engaging portion 250c of the separating contact member 250. During the process of applying a force to the separating contact member 250 to rotate it from the first position to the second position, the force of the conductive end pressing member 151 also acts on the developing cartridge 200. The developing cartridge 200 is forced to rotate and rotates in the direction closer to the photosensitive drum, so that the developing roller 220 contacts the photosensitive drum. At the same time, during the rotation of the separating contact member 250, one end of the engaging portion 250c of the separating contact member 250 rotates in the direction closer to the developing roller 220, and the first connecting block 250e provided at the other end of the separating contact member 250 rotates in the direction away from the developing roller 220, so that the elastic member 254b connected to the first connecting block 250e is stretched. After the elastic member 254b is stretched and deformed, it generates a biasing force on the separating contact member 250 along the direction of moving the separating contact member 250 from the second position to the first position. The biasing force also acts on the conductive end pressing member 151, causing the conductive end pressing member 151 to generate a reaction force in the direction opposite to the biasing force. The reaction force acts on the separating contact member 250 and the entire developing cartridge 200, enabling the developing roller 220 to further closely adhere to the photosensitive drum and also playing a buffering role, so that the developing roller 220 and the photosensitive drum can better contact and ensure the developing quality.

[0129] It should be noted that the above-mentioned separating assembly is not limited to being provided at the conductive end, and can also be provided at the driving end, or can be provided at both the driving end and the conductive end. As Figure 19 shown, when it is provided at the driving end, the separating contact member 250 is provided outside the driving end bearing 211. A second connecting block 2124 is provided outside the driving end bearing 211. The elastic member 254b connects the separating contact member 250 and the driving end bearing 211, and the connection method is the same as that when the separating assembly is provided at the conductive end, which will not be elaborated here.

[0130] Furthermore, as Figures 18 to 20 shown, a rib plate 2123 for shielding the elastic member 254b can also be provided on the developing frame. When the separating assembly is provided at the conductive end, a rib plate 2123 is provided on the inner side surface of the conductive end cover 212. The rib plate 2123 is located on the lower side of the elastic member 254b. From the appearance of the entire developing cartridge 200, the elastic member 254b is completely shielded (cannot be observed) by the rib plate 2123 and / or the conductive end cover 212, as Figure 20 shown. The setting of the rib plate 2123 can play a protective role, preventing external components from entering through the gap and interfering with the operation of the elastic member 254b and / or the separating contact member 250. Similarly, a rib plate 2123 is also provided outside the driving end bearing 211.

[0131] The other structures of the developing cartridge 200 are similar to those in the first embodiment, which will not be elaborated here.

[0132] Example Six

[0133] This embodiment provides a developing cartridge 200. Compared with the above embodiments, the separating assembly includes a separating contact member 250 and an elastic member 254c.

[0134] In this embodiment, as Figure 21 shown, the separating contact member 250 is rotatably arranged outside the driving end bearing 211 and can receive the acting force of the imaging device A1 to move between a first position and a second position;

[0135] As Figure 21 and Figure 22 shown, the elastic member 254c is coaxially arranged with the separating contact member 250 on the driving end bearing 211. One end of it abuts against the driving end bearing 211, and the other end abuts against the separating contact member 250; specifically, the elastic member 254c is a torsion spring. The coil part of the torsion spring is sleeved on the support column 2121 on the driving end bearing 211 and is closer to the cartridge body 210 than the separating contact member 250. There is a fixing block 2111 on the driving end bearing 211. One end of the torsion spring abuts between the fixing block 2111 and the inner side surface of the driving end bearing 211, and the other end of the torsion spring abuts against the separating contact member 250.

[0136] When the imaging device A1 works (during a printing task), the conductive end pressing member 151 in the imaging device A1 moves along the NH7 direction and abuts against the engaging portion 250c of the separating contact member 250. When applying an acting force to the separating contact member 250 to rotate it from the first position to the second position, the acting force of the conductive end pressing member 151 also acts on the developing cartridge 200, and the developing cartridge 200 rotates under the force and rotates in the direction close to the photosensitive drum, so that the developing roller 220 contacts the photosensitive drum; at the same time, during the rotation of the separating contact member 250, the other end of the elastic member 254c always abuts against the separating contact member 250 and generates a biasing force on the separating contact member 250 along the direction of moving the separating contact member 250 from the second position to the first position. The biasing force also acts on the conductive end pressing member 151, causing the conductive end pressing member 151 to generate a reaction force in the direction opposite to the biasing force. The reaction force acts on the separating contact member 250 and the entire developing cartridge 200, enabling the developing roller 220 to further closely adhere to the photosensitive drum, and also playing a buffering role, enabling the developing roller 220 and the photosensitive drum to better contact and ensuring the developing quality.

[0137] In this embodiment, as Figure 22 and Figure 23As shown in the figure, the power receiving member 231 includes a coupling 231a, a second elastic member 231b, and a gear portion 231c. A cavity is provided in the middle of the gear portion 231c. The coupling 231a is disposed in the cavity, and the second elastic member 231b is disposed in the cavity. Both ends of the second elastic member 231b abut against the coupling 231a and the bottom wall of the cavity respectively. The coupling 231a is used to engage with the drive head of the imaging device A1 to receive driving force and drive the gear portion 231c to rotate. The gear portion 231c is used to engage with the developing roller gear and the stirring frame gear 233 to transmit driving force, thereby driving the developing roller 220 and the stirring frame to work. The second elastic member 231b can play a buffering role when the coupling 231a engages with the drive head, avoiding collision and damage between the coupling 231a and the drive head.

[0138] As Figure 23 shown in the figure, when observing along the direction perpendicular to the rotation axis of the developing roller 220, the second elastic member 231b and the elastic member 254c are not in the same plane, that is, the second elastic member 231b and the elastic member 254c have no overlapping part in the direction of the rotation axis of the developing roller 220. The elastic member 254c is closer to the cartridge body 210 than the second elastic member 231b.

[0139] It should be noted that the above separation assembly is not limited to being provided at the drive end, and can also be provided at the conductive end, or can be provided at both the drive end and the conductive end. When provided at the conductive end, the separation contact member 250 is disposed inside the conductive end cap 212, and the connection method is the same as that when the separation assembly is provided at the drive end, which will not be elaborated here.

[0140] Embodiment Seven

[0141] This embodiment provides a developing cartridge. Compared with the above embodiments, the difference lies in that the separation assembly includes a separation contact member and a force transmission member.

[0142] In this embodiment, the separation assembly includes a separation contact member 250 rotatably disposed on the developing frame and a force transmission member 255 movably connected to the separation contact member 250.

[0143] In this embodiment, the separation assembly is disposed at the drive end of the developing frame, that is, the separation contact member is rotatably disposed outside the drive end bearing 211 (the side away from the cartridge body 210). The separation contact member 250 can receive the acting force of the imaging device A1 and move between a first position and a second position. The structure of the separation contact member 250 is the same as that in Embodiment Five, which will not be elaborated here.

[0144] As Figures 24 to 28As shown, a guide groove 2112 is provided on the developing frame. Specifically, the guide groove 2112 is arranged on the outer surface of the driving end bearing 211. A protrusion 21121 is provided in the guide groove 2112. The protrusion 21121 is roughly located in the middle position of the guide groove 2112, dividing the guide groove 2112 into a first part 21122 and a second part 21123 which are interconnected. The first part 21122 is farther away from the developing roller 220 than the second part 21123.

[0145] like Figures 24 to 28 As shown, the force transmission member 255 is a rod-shaped member, one end of which is hinged to the separation contact member 250, and the other end is slidably connected to the guide groove 2112. When the force transmission member 255 is driven to move by the separation contact member 250, the other end thereof slides along the guide groove 2112. Specifically, a rotating portion 255a is provided at one end of the force transmission member 255, and the separation contact member 250 is provided with a rotating fixed portion 250f matched with the rotating portion 255a. The rotating portion 255a can be a through hole opened at one end of the force transmission member 255, and the rotating fixed portion 250f can be a support shaft provided on the rod portion 250b of the separation contact member 250, and the force transmission member 255 can be rotatably provided on the separation contact member 250 through the support shaft and the through hole. Optionally, the rotating portion 255a can be provided as a support shaft, and the rotating fixed portion 250f can be provided as a through hole. The support shaft can be provided separately or integrally. A sliding portion 255b is provided at the other end of the force transmission member 255, and the sliding portion 255b is slidably connected to the guide groove 2112. The sliding portion 255b can be a columnar member or a block member, which extends / protrudes from the surface of the force transmission member 255 toward the box body 210. During assembly, the surface of the force transmission member 255 facing the box body 210 abuts against the surface of the guide groove 2112 facing away from the box body 210, and the sliding portion 255b is inserted into the guide groove 2112. The second part 21123 of the guide groove 2112 is closed or partially closed at one end close to the developing roller 220, and the first part 21122 is closed or partially closed at one end away from the developing roller 220, thereby preventing the sliding portion 255b from escaping from the guide groove 2112 when sliding along the guide groove 2112.

[0146] The sliding portion 255b can slide over the protrusion 21121 under the force of the imaging device (specifically, the force of the driving end pressing member 150 on the separation contact member 250 is transmitted to the force transmission member 255 to move the sliding portion 255b), and the protrusion 21121 can play a limiting role, so that the sliding portion 255b remains stable in the first part 21122 or the second part 21123. The protrusion 21121 can be elastic or rigid.

[0147] like Figure 28As shown in the figure, when the imaging device is working (during a printing task), the driving end pressing member 150 in the imaging device moves along the NH7 direction, abuts against the side of the engaging portion 250c of the separating contact member 250 away from the developing roller 220, and applies a force (pushing force) to the separating contact member 250. The separating contact member 250 rotates counterclockwise around the support column 2121 and moves from the first position to the second position. At the same time, the separating contact member 250 drives the force transmission member 255 connected to it to move, so that the sliding portion 255b of the force transmission member 255 crosses the protrusion 21121 from the first part 21122 of the guide chute 2112 to reach the second part 21123. The sliding portion 255b moves to abut against the end of the guide chute 2112 close to the developing roller 220. The pushing force received by the separating contact member 250 acts on the entire developing cartridge through the force transmission member 255, causing the developing cartridge to move under force and move along the direction close to the photosensitive drum, so that the developing roller 220 contacts the photosensitive drum.

[0148] As Figure 28 shown in the figure, when the imaging device finishes printing, the driving end pressing member 150 in the imaging device moves along the NH8 direction, abuts against the side of the engaging portion 250c of the separating contact member 250 close to the developing roller 220, and applies a force (pushing force) to the separating contact member 250. The separating contact member 250 rotates clockwise from the second position to the first position. At the same time, the separating contact member 250 drives the force transmission member 255 to move, so that the sliding portion 255b of the force transmission member 255 crosses the protrusion 21121 from the second part 21123 of the guide chute 2112 to reach the first part 21122. The sliding portion 255b moves to abut against the end of the guide chute 2112 away from the developing roller 220. The pushing force received by the separating contact member 250 acts on the entire developing cartridge through the force transmission member 255, causing the developing cartridge to move under force and move in the direction away from the photosensitive drum, so that the developing roller 220 separates from the photosensitive drum.

[0149] It should be noted that the above separating assembly is not limited to being arranged at the driving end, and can also be arranged at the conductive end, or can be arranged at both the driving end and the conductive end at the same time. When arranged at the conductive end, the separating contact member 250 and the force transmission member 255 are arranged inside the conductive end cover 212 or on the end face of the cartridge body 210 at the conductive end. Structures such as the support column 2121 and the guide chute 2112 are arranged on the inner side of the conductive end cover 212 or on the end face of the cartridge body 210 at the conductive end. The connection method is the same as that when the separating assembly is arranged at the driving end, and will not be elaborated here.

[0150] Embodiment VIII

[0151] This embodiment provides another developing cartridge. Compared with the above embodiment, the difference lies in the different structure of the separating assembly.

[0152] As Figure 29As shown, in this embodiment, the separation component includes a separation contact member 250, a first limiting portion 2113, and a second limiting portion 2114. The structure of the separation contact member 250 is the same as that in the first embodiment, and it is disposed on the drive-end bearing 211. A protruding bump 250g is provided on the connecting portion 250a of the separation contact member 250 for abutting against the first limiting portion 2113. The first limiting portion 2113 is disposed on the outer surface of the drive-end bearing 211 and is located above the support column 2121. The first limiting portion 2113 includes a column portion protruding in a direction away from the cartridge 210 and a ring portion provided at one end of the column portion away from the cartridge 210. A protruding bump 250g is provided on the connecting portion 250a and can reach a position where it abuts against the ring portion of the first limiting portion 2113, and the bump 250g abuts against the side of the ring portion close to the developing roller 220. When a certain external force is applied to the ring portion, a small degree of deformation can occur. The second limiting portion 2114 is a part of the drive-end bearing 211. The second limiting portion 2114 is located on the side of the separation contact member 250 away from the developing roller 220 and abuts against the separation contact member 250. That is, the first limiting portion 2113 and the second limiting portion 2114 respectively abut against different sides of the separation contact member 250, so that the rotation of the separation contact member 250 is restricted.

[0153] When the imaging device is operating (during a printing task), the drive-end pressing member 150 in the imaging device moves along the NH7 direction and abuts against the side of the mating portion 250c of the separation contact member 250 away from the developing roller 220, and applies a force (pushing force) to the separation contact member 250, so that the separation contact member 250 has a tendency to rotate counterclockwise. However, since the bump 250g of the separation contact member 250 abuts against the ring portion of the first limiting portion 2113, the separation contact member 250 cannot rotate. The pushing force received by the separation contact member 250 acts on the entire developing cartridge, causing the developing cartridge to move under the force and move in a direction close to the photosensitive drum, so that the developing roller 220 contacts the photosensitive drum. In addition, the pushing force of the separation contact member 250 on the first limiting portion 2113 can cause a slight deformation of the ring portion of the first limiting portion 2113, and the force generated by the deformation of the ring portion can also act on the developing cartridge in the reverse direction, which can make the developing roller 220 further close to the photosensitive drum, and can also play a buffering role, so that the developing roller 220 and the photosensitive drum are in better contact to ensure the developing quality.

[0154] After the imaging device finishes printing, the driving-end pressing member 150 in the imaging device moves along the NH8 direction, and the engaging portion 250c of the separating contact member 250 abuts against the side close to the developing roller 220, and applies a force (pushing force) to the separating contact member 250, so that the separating contact member 250 has a tendency to rotate clockwise. However, since the separating contact member 250 abuts against the second restricting portion 2114, the separating contact member 250 cannot rotate. The pushing force received by the separating contact member 250 acts on the entire developing cartridge, causing the developing cartridge to move away from the photosensitive drum after being stressed, so that the developing roller 220 is separated from the photosensitive drum.

[0155] It should be noted that the above separating assembly is not limited to being arranged at the driving end, and can also be arranged at the conductive end, or can be arranged at the driving end and the conductive end.

[0156] The other structures of the developing cartridge in this embodiment are similar to those in the first embodiment, and will not be described in detail here.

[0157] Embodiment Nine

[0158] This embodiment provides another developing cartridge. Compared with the above embodiments, the difference is that it further includes a guard plate structure for protecting the separating contact member 250.

[0159] As Figure 30 shown, in order to facilitate the cooperation between the engaging portion 250c of the separating contact member 250 and the driving-end pressing member 150, the engaging portion 250c protrudes from the cartridge body 210. Therefore, during transportation, the engaging portion 250c of the separating contact member 250 is easily damaged by impact and collision, and even the entire separating contact member 250 is damaged, affecting the function of the separating assembly. Therefore, a guard plate structure is provided to protect the separating contact member 250 from damage to the force-bearing components during transportation, which affects the quality of the developing cartridge.

[0160] Specifically, as Figure 30As shown, the guard plate structure includes a first guard plate 261 and a second guard plate 262 respectively located on both sides of the separation contact member 250. The first guard plate 261 and the second guard plate 262 can be rectangular plate-shaped members. The first guard plate 261 can be arranged at the lower edge of the drive end cover 213, and the second guard plate 262 can be arranged at the lower edge of the drive end bearing 211. The first guard plate 261 and the second guard plate 262 are oppositely arranged in the length direction of the box body 210. The mating portion 250c of the separation contact member 250 is located between the first guard plate 261 and the second guard plate 262. And in the height direction, the separation contact member 250 does not protrude from the guard plate structure, and the separation contact member 250 is completely covered by the first guard plate 261 and the second guard plate 262, so as to obtain a protective effect and prevent the separation contact member 250 from being damaged during transportation. During use, the drive end pressing member 150 contacts the mating portion 250c between the first guard plate 261 and the second guard plate 262, and the moving direction of the drive end pressing member 150 and the moving direction of the separation contact member 250 are both perpendicular to the length direction of the box body 210, and the guard plate structure will not cause obstruction, and the separation assembly can normally realize its function.

[0161] It should be noted that when the separation assembly is arranged at the conductive end, the guard plate structure can be oppositely arranged on the conductive end cover 212 and the box body 210. When the separation assembly is arranged at the drive end and the conductive end, the guard plate structure is arranged at the drive end and the conductive end at the same time.

[0162] Embodiment Ten

[0163] When the developing cartridge is installed on the imaging device and is ready for the developing work, it is usually necessary to perform an installation detection through the cooperation between the imaging device and the developing cartridge to ensure that the developing cartridge is installed in the correct position so that the imaging device can normally perform the developing work. Some imaging devices identify relevant information of the developing cartridge (such as capacity size, color, model, etc.) through the installation detection. Therefore, if the installation detection device is unstable, the developing cartridge cannot be used normally.

[0164] As Figure 31 and Figure 32 As shown, this embodiment provides a developing cartridge. Compared with the above embodiments, it further includes a component to be detected, which is used to cooperate with the imaging device to complete the installation detection of the developing cartridge. The imaging device (not shown) is also provided with an installation detection device (not shown), wherein the installation detection device includes a swing guiding member (not shown). The swing guiding member is installed in the imaging device through a connecting rod, and the swing guiding member can swing in the imaging device with the connecting rod as the center. When the developing cartridge is installed in the imaging device, the developing cartridge cooperates with the swing guiding member, drives the swing guiding member to swing and cooperates with other structures of the imaging device to jointly complete the installation detection of the developing cartridge.

[0165] As Figures 31 to 34As shown, the component to be detected includes a part to be detected 270 and a rotating part 260. The rotating part 260 can rotate under the drive of a drive component; the part to be detected 270 is directly or indirectly driven by the rotating part 260 to trigger a swing guide member in the imaging device.

[0166] As Figure 31 and Figure 32 shown, in this embodiment, the drive component is disposed between the outside of the cartridge 210 and the drive end cap 213. The drive component includes a power receiving member 231, a developing roller gear, a first transmission gear 234, and a second transmission gear 235. The power receiving member 231 is used to receive the driving force of the imaging device A1 and transmit the driving force, thereby driving the developing roller 220 and the stirring frame to rotate and being able to drive the component to be detected to operate. The developing roller gear is fixed at one end of the shaft of the developing roller 220 in the length direction. The developing roller gear meshes with the gear portion of the power receiving member 231, so that the developing roller 220 can receive the driving force and rotate. The first transmission gear 234 is rotatably supported at the drive end of the cartridge 210. The first transmission gear 234 is a two-stage coaxial gear, including a large gear portion and a small gear portion arranged coaxially. The large gear portion is farther from the cartridge 210 than the small gear portion. The large gear portion meshes with the gear portion of the power receiving member 231, and the small gear portion meshes with the second transmission gear. That is, when the power receiving member 231 receives the driving force of the imaging device and rotates, it drives the first transmission gear 234 to rotate, and the first transmission gear 234 rotates to drive the second transmission gear 235 to rotate. The second transmission gear 235 is connected to one end of the stirring frame in the length direction. That is, when the second transmission gear 235 rotates, it can drive the stirring frame to rotate synchronously. That is, the second transmission gear 235 is also called the stirring frame gear.

[0167] As Figure 31 , Figure 32 and Figure 38 shown, the rotating part 260 is a gear member rotatably supported outside the drive end of the cartridge 210. The rotating part 260 includes a tooth portion 261, a toothless portion 262, and a protruding portion 263. The tooth portion 261 is provided on the outer circumferential surface of the rotating part 260. The tooth portion 261 can mesh with the second transmission gear 235, so that the rotating part 260 can be driven by the second transmission gear 235. The tooth portion 261 does not completely cover the outer circumferential surface of the rotating part 260. There is a portion on the outer circumferential surface of the rotating part 260 without the tooth portion 261, which is the toothless portion 262. When the rotating part 260 rotates to the position where the toothless portion 262 faces the second transmission gear 235, the tooth portion 261 disengages from the second transmission gear 235, and the rotating part 260 can no longer be driven by the second transmission gear 235.

[0168] As Figure 32 and Figure 38As shown, the protrusion 263 is provided on the end face of the rotating member 260 facing away from the box body 210. The number of protrusions 263 is at least one. In this embodiment, the number of protrusions 263 is set to three, and the three protrusions 263 are arranged in an annular array on the end face of the rotating member 260. The protrusion 263 can touch and drive the detected member 270 to move when the rotating member 260 rotates.

[0169] As Figure 31 , Figures 33 to 37 shown, the detected member 270 is movably arranged on the driving end cover 213. The detected member 270 is a slider. A chute 2131 is provided on the driving end cover 213. The chute 2131 is a through groove penetrating the inner and outer sides of the driving end cover 213. At least a part of the detected member 270 is embedded in the chute 2131, so that the detected member 270 can slide in the chute 2131, and at least a part of the detected member 270 protrudes and is exposed outside the outer side face of the driving end cover 213, facilitating the detected member 270 to trigger the swing guiding member in the imaging device when moving. The chute 2131 is generally an arc-shaped groove, that is, the sliding track of the detected member 270 is also arc-shaped. The extending direction of the chute 2131 is generally along the width direction of the box body 210.

[0170] Further, as Figures 35 to 37 shown, a limiting groove 2132 is further provided on the outer side face of the driving end cover 213. A limiting post 271 is provided on the detected member 270. When the detected member 270 is installed in the chute 2131, at least a part of the limiting post 271 is embedded in the limiting groove 2132. When the detected member 270 slides in the chute 2131, the limiting post 271 also slides in the limiting groove 2132. The cooperation of the limiting post 271 and the limiting groove 2132 can limit the detected member 270, making the detected member 270 more stable when sliding.

[0171] As Figure 34 , Figures 36 to 38 shown, an abutting portion 272 is provided on one side of the detected member 270 facing the rotating member 260, for cooperating with the protrusion 263 on the rotating member 260. When the rotating member 260 rotates, the protrusion 263 can abut on the abutting portion 272 and apply a thrust to the abutting portion 272, thereby driving the detected member 270 to slide along the chute 2131 to touch the swing guiding member. Each protrusion 263 on the rotating member 260 can drive the detected member 270 to slide once. In this embodiment, the number of protrusions 263 is set to three, that is, the detected member 270 can be driven to slide three times.

[0172] As Figure 34As shown, after the workpiece 270 to be detected is driven by the protrusion 263 to slide each time, it needs to be reset to the initial position to facilitate the next protrusion 263 to touch the abutting portion 272. The component to be detected further includes a reset member 280 for resetting the workpiece 270 to be detected. The reset member 280 is connected between the workpiece 270 to be detected and the driving end cover 213. When the workpiece 270 to be detected is driven by the protrusion 263 to slide, the reset member 280 is elastically deformed and stores elastic potential energy. When the protrusion 263 rotates past the abutting portion 272, the thrust of the protrusion 263 on the abutting portion 272 disappears, and the deformation of the reset member 280 is restored to release the elastic potential energy, driving the workpiece 270 to be detected to slide and reset to the initial position in the opposite direction, waiting to be driven again after the next protrusion 263 rotates into place. Specifically, the reset member 280 is a tension spring. A first elastic hook portion 2133 is provided on the driving end cover 213, and a second elastic hook portion 273 is provided on the workpiece 270 to be detected. One end of the reset member 280 is connected to the first elastic hook portion 2133, and the other end is connected to the second elastic hook portion 273. Optionally, the reset member 280 can also be a compression spring, elastic rubber, elastic sponge, spring piece or other components that can provide elastic restoring force, or other structures using non-elastic forces.

[0173] As Figures 31 to 38 shown, after the developing cartridge is installed in the imaging device, the working process of the installation detection of the developing cartridge part is as follows:

[0174] The developing cartridge is installed in the imaging device. The driving head in the imaging device engages with the power receiving member 231. The driving head rotates to drive the power receiving member 231 to rotate, and transmits the driving force to the first transmission gear 234, the second transmission gear 235 and the rotating member 260. During the rotation of the rotating member 260, the protrusion 263 abuts against the abutting portion 272 on the workpiece 270 to be detected and applies a thrust to it, pushing the workpiece 270 to slide in the chute 2131. When the workpiece 270 to be detected slides, it touches the swing guiding member in the imaging device and causes it to swing; while the workpiece 270 to be detected slides, it drives the reset member 280 to deform. As the rotating member 260 continues to rotate, the protrusion 263 rotates past the position where it abuts against the abutting portion 272, and the thrust on the workpiece 270 to be detected disappears. The workpiece 270 to be detected is reset to the initial position under the action of the elastic restoring force of the reset member 280; when the rotating member 260 rotates to the next protrusion 263 abutting against the abutting portion 272, the above process is repeated. Since there are three protrusions 263 on the rotating member 260 in this embodiment, the protrusion 263 will push the workpiece 270 to be detected three times, and the swing guiding member of the imaging device is also triggered three times. When the imaging device recognizes the signals generated by the movement of the swing guiding member three times, it is determined that the installation detection is completed.

[0175] After the rotating member 260 is driven by the second transmission gear 235 to rotate through the stroke of the tooth portion 261 and reaches the position where the toothless portion 262 faces the second transmission gear 235, the tooth portion 261 disengages from the second transmission gear 235. After that, the second transmission gear 235 rotates and can no longer drive the rotating member 260 to rotate.

[0176] The developing cartridge of this embodiment is provided with a detection component, which can directly or indirectly receive the driving force of the imaging device to operate. During the hand-driven process, the rotating member 260 drives the detected member 270 to move, so as to cooperate with the installation detection device (including the swing guide member) of the imaging device to complete the installation detection. The structure is simple and the use is stable, and the installation detection of the developing cartridge can be better carried out.

[0177] In some other embodiments, the number of the protrusions 263 on the rotating member 260 can be set to be more or less, and the distance, arc length, etc. between the protrusions 263 can also be changed, so as to change the number of times the passive guide member is triggered, the touch interval, the touch duration, etc., so that the imaging device can identify developing cartridges of different models, capacities, and service lives.

[0178] In some other embodiments, the detection component can also be arranged at the conductive end of the developing cartridge, or can be arranged at the driving end and the conductive end of the developing cartridge at the same time.

[0179] The above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the inventive concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A developing cartridge, characterized in that, comprising: a developing roller; a cartridge body; a driving end bearing provided at one end of the cartridge body, and one end of the developing roller being supported by the driving end bearing; a conductive end cap provided at the other end of the cartridge body, and the other end of the developing roller being supported by the conductive end cap; a developing roller gear provided at one end of the developing roller and located outside the driving end bearing; a power receiving member provided outside the driving end bearing, the power receiving member being configured to directly engage with the developing roller gear and transmit the rotational driving force to the developing roller; a driving end cover provided outside the driving end bearing, the driving end cover being farther from the cartridge body than the driving end bearing; a separating contact member provided outside the driving end bearing, the separating contact member having a mating portion that protrudes downward from the cartridge body or the driving end cover; a guard plate structure including a first guard plate provided at the lower edge of the driving end cover; in the length direction of the cartridge body, the mating portion is located between the driving end bearing and the first guard plate; the separating contact member is covered by the first guard plate.

2. The developing cartridge according to claim 1, characterized in that, in the height direction, the separating contact member does not protrude from the guard plate structure.

3. The developing cartridge according to claim 2, characterized in that, the separating contact member further includes a connecting portion that is connected to the driving end bearing.

4. The developing cartridge according to claim 3, characterized in that, the connecting portion is provided at one end of the separating contact member, and the mating portion is provided at the other end of the separating contact member.

5. The developing cartridge according to claim 1, characterized in that, the separating contact member is capable of moving between a first position and a second position; the separating contact member is closer to the developing roller in the second position than in the first position.

6. The developing cartridge according to claim 1, characterized in that, the power receiving member includes a coupling and a gear portion, and the gear portion directly engages with the developing roller gear.

7. The developing cartridge according to claim 6, characterized in that, a cylinder is provided on one side of the coupling.

8. The developing cartridge according to claim 7, characterized in that, the power receiving member further includes an elastic member, the elastic member is provided in the cavity of the gear portion, one end of the elastic member abuts against the cylinder, and the other end of the elastic member abuts against the bottom of the cavity of the gear portion.

9. The developing cartridge according to claim 6, characterized in that, the driving end cover is provided with a through hole, and the coupling is exposed outward through the through hole.

Images