CN220305628U

CN220305628U - Developing box

Info

Publication number: CN220305628U
Application number: CN202322007735.4U
Authority: CN
Inventors: 彭天生; 孙远远; 曾丽坤
Original assignee: Zhuhai Nastar Information Technology Co ltd
Current assignee: Zhuhai Nastar Information Technology Co ltd
Priority date: 2023-07-27
Filing date: 2023-07-27
Publication date: 2024-01-05
Anticipated expiration: 2033-07-27

Abstract

The utility model discloses a developing cartridge which can be detachably combined with a photosensitive drum frame and is mounted to an image forming apparatus, the image forming apparatus or the photosensitive drum frame is provided with an identification terminal and a photosensitive drum, the developing cartridge comprises: a case body; the first cover body is arranged at the first side end of the box body and is provided with a separation part; the second lid is located the second side of box body, is equipped with chip installation department and compels pushing part on the second lid, is equipped with electric contact terminal on the chip installation department, when the box body moved along predetermineeing the orbit, compels pushing part to provide the second effort in chip installation department for electric contact terminal keeps electrically connected with identification terminal. Compared with the prior art, the utility model ensures the close contact between the electric contact terminal and the identification contact by arranging the forced pushing part, and simultaneously ensures the electric connection between the electric contact terminal and the identification contact in the separation process under the action of the elasticity of the forced pushing part in the separation process of the developing roller and the photosensitive drum.

Description

Developing box

Technical Field

The utility model relates to the technical field of image forming devices, in particular to a developing box.

Background

An electrophotographic image forming apparatus includes a developing cartridge for developing an electrostatic latent image on a photosensitive drum with toner. The developing cartridge has a developing roller rotatably supported in a cartridge body thereof, and develops by supplying toner accommodated in the cartridge body from the developing roller to the photosensitive drum.

In order to facilitate the image forming apparatus to recognize information such as the type, capacity, etc. of the developing cartridge, a storage unit is usually provided on the developing cartridge, and when the developing cartridge is not in a print job, the developing roller on the developing cartridge needs to be separated from the photosensitive drum, so that unnecessary developer is prevented from being transferred to the paper, and when the developing roller is separated from the photosensitive drum, the storage unit moves together with the developing cartridge, which easily causes the storage unit to be disconnected electrically from the recognition terminal of the image forming apparatus, causing a printer error.

Disclosure of Invention

The utility model aims to provide a developing cartridge which solves the technical problems in the prior art and can ensure that a storage unit is still electrically connected with an identification terminal in the process of separating a developing roller from a photosensitive drum.

In a first aspect, the present utility model provides a developing cartridge detachably mountable to a photosensitive drum frame and installed in an image forming apparatus, the image forming apparatus or the photosensitive drum frame having thereon an identification terminal and a photosensitive drum, the developing cartridge comprising:

the box body is provided with a first side end and a second side end which are oppositely arranged along a first direction;

a developing roller rotatably disposed within the cartridge, a rotational axis of the developing roller being parallel to the first direction;

the first cover body is arranged at the first side end of the box body;

the separation part is arranged at the first side end of the box body and is used for receiving a first acting force provided by the image forming device so as to drive the box body to move along a preset track and separate the developing roller from contact with the photosensitive drum;

the second cover body is arranged at the second side end of the box body, a chip mounting part and a forced pushing part are arranged on the second cover body, the forced pushing part is used for being in contact with the photosensitive drum frame, an electric contact terminal is arranged on the chip mounting part, and when the box body moves along the preset track, the forced pushing part provides a second acting force on the chip mounting part, so that the electric contact terminal is electrically connected with the identification terminal;

the chip mounting part is provided with a first mounting surface, the forced pushing part is arranged on the first mounting surface, the forced pushing part generates elastic deformation when the box body moves along a preset track, and the electric contact terminal generates displacement relative to the photosensitive drum frame along with the box body when the box body moves along the preset track.

In the developing cartridge as described above, it is preferable that the urging portion includes a first sheet body and a second sheet body connected to each other, the first sheet body being connected to the first mounting surface, the second sheet body having a predetermined gap therebetween.

In the developing cartridge as described above, it is preferable that the extending direction of the first sheet body forms a predetermined angle with the extending direction of the first mounting surface.

In the developing cartridge as described above, it is preferable that the chip mounting portion has a second mounting surface provided opposite to the first mounting surface, and the electric contact terminal is mounted to the second mounting surface.

In the developing cartridge as described above, it is preferable that the separation portion includes a separation protrusion protruding from the first cover, and a separation guide slope is provided on a side of the separation protrusion away from the first cover.

In a second aspect, the present utility model provides a developing cartridge detachably mountable to a photosensitive drum frame and installed in an image forming apparatus, the image forming apparatus or the photosensitive drum frame having thereon an identification terminal and a photosensitive drum, the developing cartridge comprising:

the first cover body is arranged at the first side end of the box body, and a containing space is formed between the first side end of the box body and the inner surface of the first cover body;

the transmission assembly is arranged in the accommodating space and used for transmitting a first driving force provided by the image forming device so as to drive the developing roller to rotate and enable the developing roller to have a trend of moving towards the first cover body;

the developing roller comprises a developing roller shaft and a developing roller body, wherein the developing roller body is coated on the circumferential surface of the developing roller shaft, and the developing roller shaft can generate displacement in the first direction relative to the box body;

the transmission assembly comprises a power receiving part, a driving gear and a developing roller gear, wherein the power receiving part is connected with the driving gear, the power receiving part is used for receiving a first driving force provided by the image forming device, the driving gear is meshed with the developing roller gear, the developing roller gear is fixed at one end part of the developing roller shaft, the developing roller gear and the driving gear are bevel gears, and the tooth rotation directions of the developing roller gear and the tooth rotation directions of the driving gear are opposite.

In the developing cartridge as described above, it is preferable that the other end portion of the developing roller shaft is located at the second side end of the cartridge body, and the other end portion of the developing roller shaft is exposed to the outside of the cartridge body and is for receiving an electric potential.

In the developing cartridge as described above, it is preferable that a first stopper is provided on an inner surface of the first cover, the first stopper restricting movement of the developing roller in a direction approaching the first cover.

In the above-described developing cartridge, it is preferable that the first stopper is abutted against an end surface of the developing roller or an end surface of the developing roller gear.

In the developing cartridge as described above, preferably, the second end of the cartridge body is provided with a bracket, and a support hole for supporting the developing roller shaft is provided on the bracket, and the support hole is a through hole.

In the developing cartridge as described above, it is preferable that the bracket is fixedly provided on the second end of the cartridge body by means of a snap-fit.

In the developing cartridge as described above, preferably, the holder is made of a conductive material, and the holder is electrically connected to the developing roller and the toner feeding roller.

In the developing cartridge as described above, it is preferable that the teeth of the developing roller gear be set to a left-hand state when the drive gear is rotated clockwise when viewed from the first side end to the second side end of the cartridge body, and the teeth of the developing roller gear be set to a right-hand state when the drive gear is rotated counterclockwise.

In a third aspect, the present utility model provides a developing cartridge detachably mountable to a photosensitive drum frame and installed in an image forming apparatus, the developing cartridge comprising:

a developing roller rotatably disposed within the cartridge, a rotational axis of the developing roller being parallel to a first direction;

the elastic piece can generate elastic deformation.

In the developing cartridge as described above, preferably, the picking portion further includes a slider, and the picking spring end portion is slidably fitted to the slider.

In the developing cartridge as described above, preferably, two of the sliding carriages are provided, the two sliding carriages are disposed opposite to each other, a sliding groove is formed in the sliding carriage, and opposite ends of the elastic picking sheet are slidably fitted in the sliding groove.

The developer cartridge of the present utility model further includes a positioning piece, which is disposed on the opposite ends of the elastic piece body, and is in positioning fit with the inner wall of the sliding groove, so as to define the movement range of the elastic piece body.

In the developing cartridge as described above, it is preferable that the slider is provided on the cartridge body.

The developing cartridge as described above, preferably, further comprises a first cover and a second cover, the first cover is disposed at a first side end of the cartridge, the second cover is disposed at a second side end of the cartridge, and the slide is disposed on the first cover and/or the second cover.

In the developing cartridge as described above, it is preferable that the end portion of the elastic pick-up sheet is displaced in the first direction with respect to the cartridge body when the elastic pick-up sheet is elastically deformed.

In the developing cartridge as described above, it is preferable that the end portion of the elastic piece is displaced in a second direction intersecting the first direction with respect to the cartridge body when the elastic piece is elastically deformed.

In the developing cartridge as described above, it is preferable that the length of the take-up spring in the first direction is 10mm to 280mm, the size of the take-up spring in the second direction is 0.5mm to 5mm, and the size of the take-up spring in the third direction is 1mm to 50mm.

Compared with the prior art, the utility model has the advantages that the pushing part is arranged, when the developing box is mounted on the photosensitive drum frame, the pushing part can be abutted with the photosensitive drum frame and generate elastic deformation, so that the chip mounting part is pushed, the chip mounting part drives the electric contact terminal to be abutted with the image forming device or the identification terminal on the photosensitive drum frame, the tight contact between the electric contact terminal and the identification contact is ensured, and meanwhile, in the process of separating the developing roller from the photosensitive drum, the electric contact terminal and the identification contact can be ensured to be electrically connected under the elastic action of the pushing part in the process of separating.

Drawings

Fig. 1 is a perspective view of a developing cartridge according to an embodiment of the present utility model;

fig. 2 is a front view of a developing cartridge according to an embodiment of the present utility model;

fig. 3 is a left side view of a developing cartridge according to an embodiment of the present utility model;

fig. 4 is a left side view of the developing cartridge of the embodiment provided by the present utility model in a state of hiding the first cover;

fig. 5 is a left side view of a developing cartridge according to an embodiment of the present utility model;

FIG. 6 is a perspective view of a first cover in one direction according to an embodiment of the present utility model;

FIG. 7 is another perspective view of the first cover according to the embodiment of the present utility model;

FIG. 8 is a partial cross-sectional view of an embodiment provided by the present utility model;

fig. 9 is a perspective view of a second cover according to an embodiment of the present utility model;

FIG. 10 is a perspective view of a developer cartridge when the pick-up tab is picked up in accordance with an embodiment of the present utility model;

FIG. 11 is a perspective view of a pick-up tab according to an embodiment of the present utility model;

fig. 12 is a schematic view of a structure of a state in which a developing roller is in contact with a photosensitive drum according to an embodiment of the present utility model;

fig. 13 is a schematic view of a structure of a state in which a developing roller is separated from a photosensitive drum according to an embodiment of the present utility model.

Reference numerals illustrate:

10-a box body, 11-a developing roller, 12-a power receiving piece, 13-a driving gear, 14-a developing roller gear, 15-a powder feeding roller gear, 16-an idler wheel and 17-a stirring rack gear;

20-a first cover body, 21-a separation part, 211-a separation protrusion, 212-a separation guide inclined plane and 22-a first limit part;

30-second cover body, 31-chip mounting part, 311-first mounting surface, 312-second mounting surface, 32-electric contact terminal, 33-pushing part, 331-first sheet body, 332-second sheet body;

40-of a taking part, 41-of a sliding seat, 42-of a sliding groove, 43-of a taking spring piece, 431-of a spring piece main body and 432-of a limiting piece;

50-a photosensitive drum;

60-identifying the terminal;

70-bracket, 71-support hole

D1—a first direction;

n1-a first force;

n2-a second force;

p-preset track.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

As shown in fig. 1 to 13, the embodiment of the present utility model provides a developing cartridge including a cartridge body 10, and a first cover body 20 and a second cover body 30 connected to the cartridge body 10, the first cover body 20 and the second cover body 30 being detachably mounted on the cartridge body 10 by means of bolting or snap-fitting or the like, a rotation assembly rotatably supported in the cartridge body 10, the rotation assembly including a developing roller 11 rotatably mounted inside the cartridge body 10, a powder feeding roller (not shown) and a stirring frame (not shown), the developing roller 11 and the powder feeding roller for conveying the developer in the cartridge body 10 to the outside of the cartridge body 10 for image formation, the stirring frame for stirring the developer in a powder bin of the cartridge body 10, the developer being prevented from caking while being capable of assisting the conveyance of the developer, a rotation axis of the developing roller 11 extending in a first direction D1, a second direction crossing the first direction, the developing roller 11 being located at one end of the cartridge body 10 in the second direction crossing the first direction, and a stirring frame (not shown) crossing the first direction, and a part of the circumference of the developing roller 11 located at the other part of the developing roller 11 in the other direction being exposed outside of the cartridge body 10.

The developing cartridge is detachably mounted in a photosensitive drum frame (not shown) of the image forming apparatus, a groove for mounting the developing cartridge, the photosensitive drum 50 and an identification terminal 60 are provided on the image forming apparatus or the photosensitive drum frame, the identification terminal 60 is elastically stretchable with respect to the photosensitive drum frame, the developing cartridge is detachably mounted on the groove, the developing roller 11 is partially exposed out of the cartridge body 10, and is positioned opposite to the photosensitive drum 50, and the developing cartridge and the photosensitive drum 50 perform image formation using developer by rotating the photosensitive drum 50 relative to the developing roller 11. The specific structure and operation of the image forming apparatus and the photosensitive drum frame are related to the prior art, and will not be described herein.

Referring to fig. 1 and 2, in the embodiment provided in the present application, the case 10 has a first side end and a second side end disposed opposite to each other along a first direction D1, where:

the first cover 20 is disposed at a first side end of the box 10, as shown in fig. 3, 6, 12 and 13, and the first cover 20 is provided with a separation portion 21, where the separation portion 21 is configured to receive a first acting force N1 provided by the image forming apparatus, so as to drive the box 10 to move along a preset track P, so that the developing roller 11 is separated from the photosensitive drum 50, and unnecessary developer is prevented from being transferred to paper, and in a possible embodiment, the preset track P is a swing movement track of the box 10.

The second cover 30 is provided at the second side end of the cartridge body 10, and as shown in fig. 5 and 9, the second cover 30 is provided with a chip mounting portion 31 and a pushing portion 33, and the developing cartridge further includes a storage unit having an electric contact terminal 32 and a storage medium electrically connected to the electric contact terminal 32, the storage medium being used for storing information (such as model, capacity, etc.) related to the developing cartridge, the electric contact terminal 32 being located on the chip mounting portion 31, and the electric contact terminal 32 being in close contact with the identification terminal 60 to achieve electric connection when the developing cartridge is mounted in the image forming apparatus, so that the image forming apparatus can identify the model, capacity, etc. information of the developing cartridge.

The pushing part 33 is connected with the chip mounting part 31, when the developing cartridge is mounted on the photosensitive drum frame, the pushing part 33 is abutted with the photosensitive drum frame and pushes the chip mounting part 31, so that the chip mounting part 31 drives the electric contact terminal 32 to be abutted with the identification terminal 60 on the image forming device or the photosensitive drum frame, thereby ensuring the tight contact between the electric contact terminal 32 and the identification contact, and simultaneously, when the separating part 21 receives the first acting force N1 provided by the image forming device and drives the cartridge 10 to move along the preset track P, the pushing part 33 provides the second acting force N2 on the chip mounting part 31, so that the electric contact terminal 32 is electrically connected with the identification terminal 60.

In the embodiment provided in this application, referring to fig. 5, 9, 12 and 13, the chip mounting portion 31 has a first mounting surface 311, the urging portion 33 is an elastic sheet, and includes a first sheet 331 and a second sheet 332 that are connected to each other, the first sheet 331 is connected to the first mounting surface 311, so that the second sheet 332 is suspended on the first mounting surface 311, a preset gap is provided between the second sheet 332 and the first mounting surface 311, the preset gap provides a space for the second sheet 332 to generate elastic deformation after being stressed, when the developing cartridge is mounted on the photosensitive drum frame, the second sheet 332 abuts against the photosensitive drum frame, so that the second sheet 332 moves towards a side close to the first mounting surface 311 to generate elastic deformation, and then the elastic urging portion 31 is generated to urge the chip mounting portion 32 to make the electric contact terminal 32 closely contact with the identification terminal 60, at this time, the second sheet 332 accumulates elastic potential energy, when the separating portion 21 drives the cartridge 10 to move along the preset track P, the developing roller 11 is separated from the photosensitive drum 50, the second sheet 332 further generates elastic deformation after being stressed, and thus the second sheet 332 further generates elastic deformation to continuously apply elastic force to the chip mounting portion 31 to the electric contact terminal 60 along the preset track P to keep the electric contact terminal 32 moving along the preset track P2.

Referring to fig. 5 and 9, a predetermined angle is formed between the extending direction of the first sheet 331 and the extending direction of the first mounting surface 311. The extending direction of the second sheet body 332 is parallel to the extending direction of the first mounting surface 311, the first sheet body 331 and the second sheet body 332 are preferably connected in an integrated mode, the distance between the second sheet body 332 and the first mounting surface 311 can be adjusted by adjusting the angle of the preset included angle, and the magnitude of the elastic force transmitted to the second mounting surface 312 by the second sheet body 332 can be adjusted.

Preferably, the preset included angle is 45 degrees, after the second sheet body 332 is stressed, the second sheet body 332 breaks down the second acting force N2 into an acting force perpendicular to the first mounting surface 311 and an acting force parallel to the first mounting surface 311, the second acting force N2 is more efficiently transferred to the chip mounting portion 31, the chip mounting portion 31 can be more easily pushed, and when the separating portion 21 drives the case body 10 to move along the preset track P, the elastic force accumulated by the second sheet body 332 can also be more efficiently transferred to the chip mounting portion 31.

Further, as shown in fig. 5 and 9, the chip mounting part 31 has a second mounting surface 312, the second mounting surface 312 is disposed opposite to the first mounting surface 311, the electric contact terminal 32 is mounted on the second mounting surface 312, and when the chip mounting part 31 receives a force perpendicular to the first mounting surface 311, the force drives the chip mounting part 31 to travel along the normal direction of the first mounting surface 311, and the electric contact terminal 32 on the second mounting surface 312 is moved synchronously with the first mounting surface 311 due to the parallelism of the second mounting surface 312 and the first mounting surface 311 so as to be in close contact with the identification terminal 60.

In a possible embodiment, referring to fig. 3, 6, 12 and 13, the separating portion 21 includes a separating protrusion 211 protruding on the first cover 20, a separating guide slope 212 is disposed on a side of the separating protrusion 211 away from the first cover 20, a preset component provided by the image forming apparatus contacts with the separating guide slope 212 to apply a first acting force N1 to the separating protrusion 211, the separating guide slope 212 breaks down the first acting force N1 into an acting force perpendicular to an axial direction of the separating protrusion 211 and an acting force parallel to the axial direction of the separating protrusion 211, and the acting force perpendicular to the axial direction of the separating protrusion 211 pushes the cartridge 10 to move toward a side away from the photosensitive drum 50, so as to separate the developing roller 11 from the photosensitive drum 50.

In the embodiment provided herein, the developing roller 11 includes a developing roller shaft and a developing roller body, the developing roller body is coated on a circumferential surface of the developing roller shaft, the developing roller shaft is displaceable in a first direction D1 relative to the cartridge body 10, an end surface of the developing roller shaft is located at a second side end of the cartridge body 10, and an end portion of the developing roller shaft is exposed to the outside of the cartridge body 10 and is used for receiving an electric potential.

Referring to fig. 1, 2 and 10, a receiving space is formed between an outer surface of the case 10 and an inner surface of the first cover 20, and a transmission assembly is disposed in the receiving space, and is used for transmitting a first driving force provided by the image forming apparatus to drive the developing roller 11 to rotate and make the developing roller shaft have a tendency to move toward the first cover 20, so as to counteract a force that causes axial conductive end movement of the developing roller, and avoid a phenomenon that the developing roller shaft moves toward the conductive end during operation, thereby causing grinding roller.

Referring to fig. 4, the transmission assembly includes a power receiving member 12, a driving gear 13, a developing roller gear 14, a powder feeding roller gear 15, an idler gear 16, and a stirring frame gear 17, the driving gear 13 is coaxially disposed with the power receiving member 12 and is engaged with each other, the power receiving member 12 receives a first driving force from the image forming apparatus and transmits the first driving force to the driving gear 13, the developing roller gear 14 and the powder feeding roller gear 15 are engaged with the driving gear 13, respectively, and the idler gear 16 is engaged with the driving gear 13 and the stirring frame gear 17, respectively.

The power receiving part 12 is a power input device, the end face of the power receiving part 12 is provided with a clamping hole matched with a power providing part in the image forming device, when the developing box is installed in the image forming device, the output end of the power providing part can be in transmission connection with the power receiving part 12, so that the power providing part can be in transmission connection with the power receiving part 12, the power providing part can drive the power receiving part 12 to rotate, the power receiving part 12 drives the driving gear 13 to rotate, and further drives the developing roller gear 14, the powder feeding roller gear 15 and the idler gear 16 to rotate respectively, the developing roller gear 14 and the powder feeding roller gear 15 correspondingly drive the developing roller 11 and the powder feeding roller to rotate respectively, the idler gear 16 is meshed with the stirring frame gear 17 to drive the stirring frame gear 17 to rotate correspondingly.

In the embodiment provided by the application, the driving gear 13, the developing roller gear 14, the powder feeding roller gear 15, the idler gear 16 and the stirring rack gear 17 are all helical gears, wherein the tooth directions of the developing roller gear 14, the powder feeding roller gear 15 and the idler gear 16 are left-handed, the tooth directions of the driving gear 13 and the stirring rack gear 17 are right-handed, and the power receiving piece 12 and the driving gear 13 receive the first driving force to rotate clockwise when being observed from the first side end to the second side end, so that the axial force born by the developing roller gear 14, the powder feeding roller gear 15 and the idler gear 16 is leftwards, and the axial force born by the driving gear 13 and the stirring rack gear 17 is rightwards, thereby preventing the developing roller 11 from moving towards the side close to the conducting end.

In some types of image forming apparatuses, the first driving force may cause the power receiving member 12 and the driving gear 13 to rotate counterclockwise when viewed from the first side end toward the second side end, the teeth of the developing roller gear 14 are set to right-hand, and the teeth of the driving gear 13 are set to left-hand, and the axial force received by the developing roller gear 14 may likewise be rightward.

In other possible embodiments, the driving gear 13 and the power receiving member 12 may be disposed on different axes, that is, a second driving gear may be disposed on the power receiving member 12 on the same axis, and the second driving gear is engaged with the driving gear 13, so that the rotation direction of the power receiving portion 12 and the second driving gear is clockwise when viewed from the first side end to the second side end, and the rotation direction of the driving gear 13 is counterclockwise, in which case the teeth of the second driving gear are disposed to be right-handed, the teeth of the driving gear 13 are disposed to be left-handed, and the developing roller gear 14 may be disposed to be right-handed, so that the axial force generated when the developing roller gear 14 rotates is also directed toward the first cover 20, that is, to the right.

In the prior art, a plurality of clamping grooves are formed in the upper surface of an original developing roller shaft and are used for installing clamp springs, and the developing roller shaft is positioned relative to the box body through the clamp springs, so that the developing roller shaft is limited to move in the axial direction.

Through the arrangement, the upper surface of the developing roller shaft does not need to be provided with a clamping groove or a clamping spring, and the cost can be reduced by directly using a cylindrical steel shaft.

At the same time, the developing roller 11 can be located at one end of the second side end, so that the end extends out of the second side end of the box body 10 and is directly contacted with the power supply terminal to conduct electricity to the developing roller 11, but since the developing roller 11 is not positioned by the clamp spring, and one end extends out of the box body 10, that is, the developing roller 11 does not have a limit structure when moving towards the second side end, the developing roller gear 14 is adjusted, so that the developing roller gear 14 does not provide force towards the second side end to the developing roller 11 when rotating, and the developing roller 11 is prevented from moving towards the second side end. This reduces the cost of the developing roller 11 and prevents the developing roller 11 from moving toward the second side end.

Further, as shown in fig. 7 and 8, the first cover 20 is provided with a first stopper 22 on an inner surface thereof, the first stopper 22 restricts the movement of the developing roller 11 relative to the cartridge 10 in the first direction D1 in a direction approaching the first cover 20, the first stopper 22 is preferably a bump structure protruding on the inner surface of the first cover 20, the first stopper 22 abuts against an end surface of the developing roller 11 to restrict the movement of the developing roller 11 in the direction approaching the first cover 20, and in another embodiment, the first stopper 22 may abut against an end surface of a developing roller gear 14 sleeved on the developing roller shaft to similarly restrict the movement of the developing roller 11 in the direction approaching the first cover 20.

Further, referring to fig. 1, the second end of the cartridge body 10 is provided with a bracket 70, and the bracket 70 is provided with a support hole 71 for supporting the developing roller shaft, preferably, the support hole 71 is a through hole, and an inner diameter of the support hole 71 is adapted to an outer diameter of the developing roller shaft. In one possible embodiment, the bracket 70 is fixedly disposed on the second end of the box body 10 by a clamping manner, and in other possible embodiments, the bracket 70 may be connected to the second end of the box body by a bolt or integrally formed, which is not limited herein.

To conduct the current to the developing roller 11 and the powder feeding roller, the holder 70 is made of a conductive material, and the holder 70 is electrically connected to the developing roller 11 and the powder feeding roller.

Referring to fig. 1, 2 and 10, a picking part 40 is provided on a box body 10, so that an operator can pick up the box body 10, the picking part 40 includes two sliding seats 41 and a picking spring piece 43, the sliding seats 41 are convexly provided on the box body 10, the two sliding seats 41 are oppositely provided, a sliding groove 42 is formed in the sliding seat 41, opposite ends of the picking spring piece 43 are slidably matched in the sliding groove 42, the picking spring piece 43 is long-strip-shaped and can elastically deform, the sliding seat 41 is protruded on the box body 10, so that the space in the box body 10 is not required to be compressed, the volume of the box body 10 is increased, the picking spring piece 43 is close to the surface of the box body 10 in a normal state, when the operator needs to pick up a developing box, the two ends of the picking spring piece 43 are moved in the sliding groove 42, the middle part of the picking spring piece 43 moves towards one side far away from the surface of the box body 10, and an arch structure is formed, so that the operator can conveniently and continuously apply force.

In the embodiment provided by the application, referring to fig. 11, the elastic piece 43 includes an elastic piece main body 431 and a limiting piece 432 disposed at two opposite ends of the elastic piece main body 431, preferably, the elastic piece main body 431 and the limiting piece 432 are integrally formed, the width of the limiting piece 432 is greater than that of the elastic piece main body 431, and the limiting piece 432 forms a limiting fit with the inner wall of the chute 42 so as to limit the movement range of the elastic piece main body 431 and avoid the elastic piece 43 from sliding out of the slide seat 41.

The length of the picking spring piece 43 in the first direction is 10mm to 280mm, preferably 167mm in this embodiment, and the size of the picking spring piece 43 in the second direction is 0.5mm to 5mm, preferably 1mm in this embodiment. The size of the pick-up dome 43 in the third direction is 1mm to 50mm, and is preferably 20mm in this embodiment. The elastic piece 43 can be easily elastically deformed while having a certain strength by adopting the above dimension, and the dimension is suitable for being taken by a human hand.

In another embodiment, the elastic picking piece 43 may extend along the third direction, that is, when the user picks up the elastic picking piece 43, the two ends of the elastic picking piece 43 displace relative to the box 10 in the third direction, and the sliding seat 41 is also sequentially arranged in the third direction. Furthermore, the setting of tilting the pick-up dome 43 in the first direction or the setting of adjusting a certain angle will also easily occur to those skilled in the art. The elastic pick-up sheet 43 may be provided in other shapes, such as a cylindrical shape, a string shape, etc. The slider 41 may be provided on the first cover 20 and the second cover 30.

While the foregoing is directed to embodiments of the present utility model, other and further embodiments of the utility model may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow.

Claims

1. A developing cartridge detachably mountable to a photosensitive drum frame and having an identification terminal and a photosensitive drum thereon in an image forming apparatus, the developing cartridge comprising:

the first cover body is arranged at the first side end of the box body;

the separation part is fixedly arranged at the first side end of the box body and is used for receiving a first acting force provided by the image forming device so as to drive the box body to move along a preset track and separate the developing roller from contact with the photosensitive drum;

2. The developer cartridge according to claim 1, wherein the urging portion includes a first sheet body and a second sheet body connected to each other, the first sheet body being connected to the first mounting surface with a predetermined gap therebetween.

3. The developing cartridge according to claim 2, wherein: the extending direction of the first sheet body and the extending direction of the first mounting surface form a preset included angle.

4. The developing cartridge according to claim 2, wherein: the chip mounting portion has a second mounting surface disposed opposite the first mounting surface, and the electrical contact terminal is mounted to the second mounting surface.

5. The developing cartridge according to claim 1, wherein: the separation part comprises a separation protrusion protruding on the first cover body, and a separation guiding inclined plane is arranged on one side, far away from the first cover body, of the separation protrusion.

6. A developing cartridge detachably mountable to a photosensitive drum frame and having an identification terminal and a photosensitive drum thereon in an image forming apparatus, the developing cartridge comprising:

7. The developing cartridge according to claim 6, wherein: the other end portion of the developing roller shaft is located at the second side end of the cartridge body, and is at least partially exposed to the outside of the cartridge body and is for receiving an electric potential.

8. The developing cartridge according to claim 6, wherein: the inner surface of the first cover body is provided with a first limiting part which limits the movement of the developing roller along the direction close to the first cover body.

9. The developing cartridge according to claim 8, wherein: the first limiting part is abutted with the end face of the developing roller or the end face of the developing roller gear.

10. The developing cartridge according to claim 6, wherein: the second end of the box body is provided with a support, a support hole for supporting the developing roller shaft is formed in the support, and the support hole is a through hole.

11. The developing cartridge according to claim 10, wherein: the support is fixedly arranged at the second end of the box body in a clamping manner.

12. The developing cartridge according to claim 10, wherein: the support is made of conductive materials and is electrically connected with the developing roller and the powder feeding roller.

13. The developing cartridge according to claim 6, wherein: when the first side end of the box body is observed to the second side end, if the driving gear rotates clockwise, the tooth teeth of the developing roller gear are set to be left-handed, and if the driving gear rotates anticlockwise, the tooth teeth of the developing roller gear are set to be right-handed.

14. A developing cartridge detachably mountable to an image forming apparatus, the developing cartridge comprising:

the elastic piece can generate elastic deformation.

15. The developing cartridge according to claim 14, wherein: the picking part further comprises a sliding seat, and the end part of the picking spring piece is in sliding fit with the sliding seat.

16. The developing cartridge according to claim 15, wherein: the sliding seats are provided with two sliding seats, the two sliding seats are oppositely arranged, sliding grooves are formed in the sliding seats, and the two opposite ends of the elastic picking sheet are in sliding fit in the sliding grooves.

17. The developing cartridge according to claim 16, wherein: the picking spring plate comprises a spring plate main body and limiting pieces arranged at two opposite ends of the spring plate main body, wherein the limiting pieces are in limiting fit with the inner wall of the sliding groove so as to limit the moving range of the spring plate main body.

18. The developing cartridge according to claim 15, wherein: the sliding seat is arranged on the box body.

19. The developing cartridge according to claim 15, wherein: the novel box comprises a box body, and is characterized by further comprising a first cover body and a second cover body, wherein the first cover body is arranged at the first side end of the box body, the second cover body is arranged at the second side end of the box body, and the sliding seat is arranged on the first cover body and/or the second cover body.

20. The developing cartridge according to claim 15, wherein: when the elastic piece is elastically deformed, the end part of the elastic piece is displaced relative to the box body in a first direction.

21. The developing cartridge according to claim 15, wherein: when the elastic piece is elastically deformed, the end part of the elastic piece is displaced relative to the box body in a second direction crossing the first direction.

22. The developing cartridge according to claim 14, wherein: the length of the elastic piece in the first direction is 10mm to 280mm, the size of the elastic piece in the second direction is 0.5mm to 5mm, and the size of the elastic piece in the third direction is 1mm to 50mm.