CN210742682U

CN210742682U - Processing box

Info

Publication number: CN210742682U
Application number: CN201921999314.1U
Authority: CN
Inventors: 何永刚
Original assignee: Print Rite Unicorn Image Products Co Ltd
Current assignee: Print Rite Unicorn Image Products Co Ltd
Priority date: 2019-11-18
Filing date: 2019-11-18
Publication date: 2020-06-12
Anticipated expiration: 2029-11-18

Abstract

The utility model provides a processing box, which comprises a drum frame, a developing frame and a photosensitive drum, the developing roller comprises a drum barrel and a first driving assembly arranged at one axial end of the drum barrel, the developing roller comprises a roller body and a second driving assembly arranged at one axial end of the roller body, the first driving assembly comprises a transmission gear and a driving head which are connected with each other, the second driving assembly comprises a driving gear, a moving part and an elastic part, the first end of the moving part is connected with the roller body, the second end of the moving part can be connected with the driving gear, the driving gear and the transmission gear are meshed with each other, the elastic part forces the moving part to be close to the driving gear, the separating mechanism can enable the developing frame to rotate to an interval position from a contact position, and the separating mechanism enables the moving part to move axially along the roller body according to the rotation of the developing frame from the contact position to the interval position so as to. The processing box has the advantages of good working stability, simple structure, low production cost and high production efficiency.

Description

Processing box

Technical Field

The utility model belongs to the technical field of the printing consumables technique and specifically relates to a detachably installs imaging device's processing box is related to.

Background

An electrophotographic image forming apparatus generally has therein an image processing unit and a developing unit, and develops an electrostatic latent image formed on the image processing unit with a developer such as toner supplied from the developing unit to form a visible image on a medium such as paper. In which toner is used as a consumable product and needs to be continuously replenished into an electrophotographic image forming apparatus, it is common to supply toner to a developing unit having a process cartridge accommodating a certain amount of toner detachably mounted to the developing unit in the electrophotographic image forming apparatus.

Referring to fig. 1 and 2, a conventional process cartridge 1 includes a driving assembly, a developing roller 14, an agitating frame (not shown), a powder feeding roller (not shown), and a photosensitive drum 13, the driving assembly includes a first driving assembly 11 and a second driving assembly 12, the first driving assembly 11 drives the photosensitive drum 13 to rotate, the second driving assembly 12 drives the developing roller 14, the agitating frame, and the powder feeding roller to rotate, and the second driving assembly 12 includes a clutch 121, a second driving head 122, a driving gear 123, and a spring 124. During the image formation of the process cartridge 1 in the image forming apparatus, the clutch 121 and the spring 124 connect the second driving head 122 with the driving gear 123, the first driving assembly 11 receives the driving force of the first driving head in the image forming apparatus to drive the photosensitive drum 13 to rotate, and the second driving head 122 receives the driving force of the second driving head in the image forming apparatus to drive the developing roller 14, the agitator and the powder feeding roller to rotate. When the process cartridge 1 is in the process of printing in the image forming apparatus, the photosensitive drum 13 needs to be cleaned at the printing gap in order to improve the printing quality, since the photosensitive drum 13 and the developing roller 14 are always in contact at the time of printing, and during the cleaning process, the two are separated. In the state of cleaning the photosensitive drum 13, the clutch 121 separates the second driving head 122 from the driving gear 123, the second driving head in the imaging device continues to drive the second driving head 122 to rotate, the driving gear 123 stops rotating because the driving gear 123 is separated from the second driving head 122, and meanwhile, the developing roller 14, the stirring frame and the powder feeding roller all stop rotating, at this time, the first driving head in the imaging device continues to drive the first driving assembly 11 to rotate, so as to drive the photosensitive drum 13 to rotate, and thus, the cleaning of the residual powder on the photosensitive drum 13 is realized.

However, the second driving assembly 12 of the conventional process cartridge 1 needs to drive the powder feeding roller and the stirring frame to rotate in addition to the developing roller 14, and the whole gear transmission structure is complex, so that the process cartridge 1 has high assembly difficulty, high production cost and low production efficiency.

Disclosure of Invention

In order to solve the problems, the main object of the present invention is to provide a processing box with low production cost, high production efficiency and good working stability.

In order to achieve the above-mentioned primary object, the present invention provides a process cartridge detachably mountable to an image forming apparatus, the process cartridge comprising a drum frame, a developing frame, a photosensitive drum, a developing roller and a separating mechanism, the photosensitive drum rotatably supported on the drum frame, the developing roller rotatably supported on the developing frame, the developing frame rotating between a contact position and a spaced position with respect to the drum frame, the photosensitive drum comprising a drum barrel and a first driving assembly mounted at one axial end of the drum barrel, the developing roller comprising a roller body and a second driving assembly mounted at one axial end of the roller body, the first driving assembly and the second driving assembly being located on the same side of the process cartridge, the roller body contacting the drum barrel at the contact position, the roller body separating from the drum barrel at the spaced position, the first driving assembly comprising a transmission gear and a driving head connected to each other, the driving head for receiving a rotational force of the image forming apparatus, the second driving assembly comprises a driving gear, a moving part and an elastic part, the first end of the moving part is connected with the roller body, the second end of the moving part can be connected with the driving gear, the driving gear is meshed with the transmission gear, the elastic part forces the moving part to be close to the driving gear, the separating mechanism can receive acting force of the imaging device to enable the developing frame to rotate to an interval position from a contact position, and the separating mechanism enables the moving part and the driving gear to be separated through axial movement of the moving part along the roller body according to the fact that the developing frame rotates to the interval position from the contact position.

According to the scheme, the first end of the moving part is connected with the roller body, the second end of the moving part can be connected with the driving gear, the driving gear is meshed with the transmission gear, the elastic piece forces the moving part to be close to the driving gear, the separating mechanism can receive acting force of the imaging equipment to enable the developing frame to rotate to the interval position from the contact position, the separating mechanism enables the moving part to be separated from the driving gear along the axial movement of the roller body through the rotating of the developing frame to the interval position from the contact position, the driving head is driven to rotate the drum barrel to achieve surface cleaning, and the working stability is good. Moreover, the processing box has simple structure, and can effectively reduce the production cost and improve the production efficiency. Meanwhile, when the processing box is placed on the imaging device or taken out of the imaging device, the resistance is small, and the installation or taking-out operation is more convenient and labor-saving.

The further scheme is that the separating mechanism comprises a stress part and a guide part connected with the stress part, the developing frame is provided with a limit hole for the stress part to penetrate through, the stress part can receive the acting force of the imaging device, the guide part is provided with a waist-shaped hole in rotary sleeve joint with the moving part, a boss is arranged on one side of the guide part, and the boss and the moving part are in contact with each other to form an inclined plane.

The further scheme is that the moving part includes interconnect's first cylinder and shaft shoulder, and first cylinder runs through waist shape hole setting and can be connected with drive gear, and the boss is contradicted on the terminal surface of shaft shoulder.

According to a further scheme, the separating mechanism comprises a pushing piece and a linkage piece, the linkage piece is rotatably sleeved at one end of the driving gear, a first protruding platform is arranged on one side of the linkage piece, the pushing piece is provided with a stress portion and a guide portion connected with the stress portion, the developing frame is provided with a limiting hole for the stress portion to penetrate through, the stress portion can receive acting force of the imaging device, a round hole in rotary sleeved connection with the moving piece is formed in the guide portion, a second protruding platform is arranged on one side of the guide portion, the portion, which is mutually abutted to the second protruding platform and the first protruding platform, is an inclined plane, and the pushing piece is used for enabling the moving piece to move along the.

The moving part comprises a first cylinder and a shaft shoulder which are connected with each other, the first cylinder penetrates through the circular hole and can be connected with the driving gear, and the guide part abuts against the end face of the shaft shoulder.

The end face of the first column body is provided with a plurality of protrusions, one end of the driving gear, which is close to the first column body, is provided with a plurality of grooves, and the protrusions can be inserted into the grooves.

The moving part further comprises a second column body, the second column body is connected with one end, far away from the first column body, of the shaft shoulder, the second column body is provided with a preferred arc section, a preferred arc hole is formed in one end of the roller body, the preferred arc section can be matched with the preferred arc hole along the axial movement of the roller body, and the cross section of the preferred arc section is a preferred arc surface.

In a further scheme, the elastic part is a spring, and the spring is sleeved on the second column body and is pressed between the shaft shoulder part and the roller body.

The first cylinder, the shaft shoulder, the second cylinder and the roller body are coaxially arranged.

Further, the process cartridge may further include an end cap mounted on one side of the developing frame, and the driving gear may be rotatably supported on the end cap.

Drawings

Fig. 1 is a structural view of a conventional process cartridge.

Fig. 2 is a partially exploded view of a conventional process cartridge.

Fig. 3 is a structural view of the first embodiment of the process cartridge of the present invention.

Fig. 4 is a first partial structural view of the first embodiment of the process cartridge of the present invention.

Fig. 5 is a second partial structural view of the first embodiment of the process cartridge of the present invention.

Fig. 6 is a partial structural view of a developing frame in the first embodiment of the process cartridge of the present invention.

Fig. 7 is an exploded view of the second driving assembly and the separating mechanism of the first embodiment of the process cartridge according to the present invention.

Fig. 8 is a view showing a structure of the second driving unit and the separating mechanism according to the first embodiment of the process cartridge of the present invention.

FIG. 9 is a view showing a structure of a pusher in the first embodiment of the cartridge according to the present invention.

FIG. 10 is a structural view of a movable member according to the first embodiment of the process cartridge of the present invention.

Fig. 11 is a view showing a structure of a second driving unit and a separating mechanism according to a second embodiment of the process cartridge of the present invention.

Fig. 12 is an exploded view showing the second driving unit and the separating mechanism of the second embodiment of the process cartridge according to the present invention.

The present invention will be further explained with reference to the drawings and examples.

Detailed Description

First embodiment of process cartridge:

referring to fig. 3 and 4, the process cartridge 2 is detachably mounted in the image forming apparatus, and the process cartridge 2 includes a drum frame 21, a developing frame 22, a photosensitive drum rotatably supported on the drum frame 21, a developing roller rotatably supported on the developing frame 22, a separating mechanism, and an end cap 27. The photosensitive drum includes a drum 23 and a first driving assembly mounted at one axial end of the drum 23, and the developing roller includes a roller body 24 and a second driving assembly mounted at one axial end of the roller body 24, the first driving assembly and the second driving assembly being located on the same side of the process cartridge 2. The developing frame 22 rotates between the contact position and the spaced position with respect to the drum frame 21. In the contact position the roller body 24 is in contact with the drum 23 and in the spaced position the roller body 24 is separated from the drum 23.

The first driving assembly includes a transfer gear 26 and a driving head 25 connected to each other, and the driving head 25 is configured to receive a rotational force of the image forming apparatus, so as to drive the transfer gear 26 to rotate and rotate the drum 23.

Referring to fig. 5 to 10, the second driving assembly includes a driving gear 28, a movable member 32, and an elastic member 33, and the driving gear 28 and the transmission gear 26 are engaged with each other. Wherein an end cap 27 is mounted on one side of the developing frame 22, and a driving gear 28 is rotatably supported on the end cap 27. Specifically, the driving gear 28 has two outward extending

posts

281 and 282 at two axial ends thereof, and the end cover 27 is opened with a support hole for rotatably engaging the two

posts

281 and 282, so that the driving gear 28 is rotatably supported on the end cover 27. A circular truncated cone 283 is protruded on the driving gear 28 from the cylinder 282 on one side of the driving gear 28 close to the movable piece 32, and the diameter of the circular truncated cone 283 is smaller than that of the

cylinders

281 and 282. Three grooves 284 are formed in the end face, close to the movable member 32, of the circular truncated cone 283, and the three grooves 284 are uniformly arranged around the axis of the driving gear 28.

Referring to fig. 7 and 10, the movable member 32 includes a first cylindrical body 321, a shoulder 322, and a second cylindrical body 323 connected to each other in this order, and the shoulder 322 has a diameter greater than that of the first and second

cylindrical bodies

321 and 323, respectively. The end surface of the first cylinder 321 is provided with three protrusions 324, the three protrusions 324 are uniformly arranged around the axis of the first cylinder 321, and the three protrusions 324 can be inserted into the three grooves 284, respectively. The end of the second post 323 away from the shaft shoulder 322 is a major arc segment 325, and the section of the major arc segment 325 is a major arc surface. One end of the roller body 24 is provided with a major arc hole (not labeled), and the major arc section 325 can be matched with the major arc hole along the axial movement of the roller body 24. Resilient member 33 is a spring that is received over second post 323 and is compressed between shoulder 322 and roller body 24, thereby forcing moveable member 32 toward drive gear 28. The first cylinder 321, the shoulder 322, the second cylinder 323 and the roller body 24 are coaxially disposed, the driving gear 28 receives a rotational force by being engaged with the transfer gear 26, and after the three protrusions 324 are respectively inserted into the three grooves 284, the driving gear 28 drives the movable member 32 to rotate and drives the roller body 24 to rotate.

Referring to fig. 5 to 9, a separating mechanism is provided between the driving gear 28 and the movable member 32, and the separating mechanism receives a force of the image forming apparatus to rotate the developing frame 22 from the contact position to the spaced position. The separation mechanism separates between the movable piece 32 and the drive gear 28 by moving the movable piece 32 in the axial direction of the roller body 24 in accordance with the rotation of the developing frame 22 from the contact position to the spaced position.

Specifically, the detaching mechanism includes a pushing member 31 and a link 29. The body of the link 29 is a circular ring structure, the circular ring structure is rotatably sleeved on the circular platform 283 of the driving gear 28, and the end surface of one side of the circular ring structure, which is close to the movable piece 32, protrudes to form a first boss 291. The pushing member 31 has a force receiving portion 311 and a guide portion 313 connected to the force receiving portion 311, and the force receiving portion 311 can receive the force of the image forming apparatus. The body of the guiding portion 313 is a ring structure, the ring structure is provided with a circular hole 312 rotatably sleeved with the first cylinder 321 of the movable element 32, a second boss 314 is formed by protruding on one side end surface of the ring structure close to the driving gear 28, and one side end surface of the ring structure far away from the driving gear 28 abuts against the end surface of the shaft shoulder 322 of the movable element 32. The parts of the second projection 314 interfering with the first projection 291 are

inclined surfaces

315 and 292, and the pushing member 31 is used for moving the movable member 32 along the axial direction of the roller body 24.

Referring to fig. 6, the sidewall 221 of the developing frame 22 is provided with a limit hole 2211 through which the force-receiving portion 311 of the pushing member 31 passes, when the force-receiving portion 311 receives the force of the image forming apparatus, the developing frame 22 is driven to rotate from the contact position to the spaced position, and as the developing frame 22 rotates from the contact position to the spaced position, the guide portion 313 of the pushing member 31 rotates, and since the portions of the second boss 314 on the guide portion 313 and the first boss 291 on the link 29 which are abutted against each other are the

inclined surfaces

315 and 292, the guide portion 313 moves away from the driving gear 28 along with the rotation of the guide portion 313, the movable member 32 is forced to move away from the driving gear 28, so that the movable member 32 and the driving gear 28.

When the process cartridge 2 is mounted to the image forming apparatus, and the image forming apparatus is in a normal printing state, the developing frame 22 is in a contact position with respect to the drum frame 21, the roller body 24 of the developing roller is in contact with the drum 23 of the photosensitive drum, and the force-receiving portion 311 of the pushing member 31 does not receive the acting force of the image forming apparatus, and the movable member 32 and the driving gear 28 are coupled to each other, so as to receive the driving force from the transmission gear 26, and the developing roller is rotated. During the printing process of the processing box 2, the developing roller rotates, and the roller body 24 of the developing roller is in contact with the drum 23 of the photosensitive drum, so that carbon powder is stably transferred from the roller body 24 of the developing roller to the drum 23 of the photosensitive drum, and a series of laser printing such as exposure, development, transfer printing and the like is realized on printing paper.

When the image forming apparatus needs to clean the drum 23 of the photosensitive drum, the cleaning unit of the image forming apparatus applies an acting force to the force receiving portion 311 of the pushing member 31 of the process cartridge 2, and as the force receiving portion 311 receives the acting force of the image forming apparatus, the developing frame 22 is driven to rotate from the contact position to the spaced position, so that the roller body 24 of the developing roller is separated from the drum 23 of the photosensitive drum. Meanwhile, as the developing frame 22 rotates from the contact position to the spaced position, the guide portion 313 of the pushing member 31 rotates, and since the portions where the second boss 314 on the guide portion 313 and the first boss 291 on the link member 29 interfere with each other are both the

inclined surfaces

315 and 292, the guide portion 313 moves away from the drive gear 28 as the guide portion 313 rotates, and the movable member 32 is forced to move away from the drive gear 28, so that the movable member 32 and the drive gear 28 are separated from each other. At this time, the spring 33 is in a compressed state, and the driving head 25 still receives the rotational force of the image forming apparatus, continues to drive the transmission gear 26 to rotate, and rotates the drum 23 and the driving gear 28, while the driving gear 28 is in an idle state. Due to the separation between the movable piece 32 and the driving gear 28, the roller body 24 of the developing roller stops rotating, and meanwhile, the roller body 24 of the developing roller is separated from the drum barrel 23 of the photosensitive drum, so that the driving head 25 drives the drum barrel 23 to rotate, and the surface of the drum barrel is cleaned.

After the drum barrel 23 of the photosensitive drum is cleaned, the pushing piece 31 and the linkage piece 29 of the processing box 2 reset, and meanwhile, the spring 33 forces the moving piece 32 to be close to the driving gear 28 under the action of restoring force of the spring 33, so that the moving piece 32 and the driving gear 28 are connected and matched, the roller body 24 of the developing roller is continuously driven to rotate, powder supply to the drum barrel 23 of the photosensitive drum is realized, further, the imaging equipment is continuously printed, the carbon powder transfer between the developing roller and the photosensitive drum is effectively guaranteed, the powder discharging of the processing box 2 is more uniform, and the printing quality is stable. Moreover, the processing box 2 has simple structure, and can effectively reduce the production cost and improve the production efficiency. Meanwhile, when the process cartridge 2 is placed in or taken out from the image forming apparatus, the resistance is small, and the mounting or taking-out operation is more convenient and labor-saving.

Second embodiment of process cartridge:

as a description of the second embodiment of the process cartridge of the present invention, only the differences from the first embodiment of the process cartridge will be described below.

Referring to fig. 11 and 12, the separating mechanism 34 of the process cartridge 2' includes a force receiving portion 341 and a guide portion 342 connected to the force receiving portion 341, and the developing frame 22 is provided with a stopper hole 2211 through which the force receiving portion 341 is disposed, and the force receiving portion 341 can receive the acting force of the image forming apparatus. The guiding portion 342 has a waist-shaped hole 343 rotatably sleeved with the first column 321 of the movable member 32, and a boss 344 is disposed on a side of the guiding portion 342 facing the movable member 32, the boss 344 abuts against an end surface of the shaft shoulder 322 of the movable member 32, and a portion of the boss 344 abutting against the shaft shoulder 322 has an inclined surface 345.

When the process cartridge 2' is mounted to the image forming apparatus, and the image forming apparatus is in a normal printing state, the developing frame 22 is in a contact position with respect to the drum frame 21, the roller body 24 of the developing roller is in contact with the drum 23 of the photosensitive drum, the force receiving portion 341 of the separating mechanism 34 does not receive the acting force of the image forming apparatus, and the movable member 32 and the driving gear 28 are coupled to each other, so that the developing roller is rotated by receiving the driving force from the transmission gear 26. During the printing process of the processing box 2', the developing roller rotates, and the roller body 24 of the developing roller is contacted with the drum barrel 23 of the photosensitive drum, so that carbon powder is stably transferred from the roller body 24 of the developing roller to the drum barrel 23 of the photosensitive drum, and a series of laser printing such as exposure, development, transfer printing and the like is realized on printing paper.

When the image forming apparatus needs to clean the drum 23 of the photosensitive drum, the cleaning unit of the image forming apparatus applies a force to the force receiving portion 341 of the separation mechanism 34 of the process cartridge 2', and as the force receiving portion 341 receives the force of the image forming apparatus, the developing frame 22 is driven to rotate from the contact position to the spaced position, so that the roller body 24 of the developing roller is separated from the drum 23 of the photosensitive drum. Meanwhile, as the developing frame 22 rotates from the contact position to the spaced position, the guide portion 342 of the separation mechanism 34 rotates, and since the portion of the boss 344 of the guide portion 342 that abuts against the shaft shoulder portion 322 of the movable piece 32 is the inclined surface 345, and the guide portion 342 and the first cylindrical body 321 are engaged through the kidney-shaped hole 343, the movable piece 32 is forced to move away from the drive gear 28 as the guide portion 342 rotates, so that the movable piece 32 and the drive gear 28 are separated from each other. At this time, the spring 33 is in a compressed state, and the driving head 25 still receives the rotational force of the image forming apparatus, continues to drive the transmission gear 26 to rotate, and rotates the drum 23 and the driving gear 28, while the driving gear 28 is in an idle state. Due to the separation between the movable piece 32 and the driving gear 28, the roller body 24 of the developing roller stops rotating, and meanwhile, the roller body 24 of the developing roller is separated from the drum barrel 23 of the photosensitive drum, so that the driving head 25 drives the drum barrel 23 to rotate, and the surface of the drum barrel is cleaned.

After the drum barrel 23 of the photosensitive drum is cleaned, the separating mechanism 34 of the processing box 2 'is reset, and meanwhile, the spring 33 forces the moving part 32 to be close to the driving gear 28 under the action of restoring force of the spring 33, so that the moving part 32 is connected and matched with the driving gear 28, the roller body 24 of the developing roller is continuously driven to rotate, powder supply to the drum barrel 23 of the photosensitive drum is realized, further, the imaging equipment is continuously printed, the carbon powder transfer between the developing roller and the photosensitive drum is effectively ensured, the powder outlet of the processing box 2' is more uniform, and the printing quality is stable. Moreover, the process cartridge 2' has a simple structure, and can effectively reduce the production cost and improve the production efficiency. Meanwhile, when the process cartridge 2' is set in or taken out from the image forming apparatus, the resistance is small, and the mounting or taking-out operation is more convenient and labor-saving.

Above embodiment is the preferred example of the utility model, and not the restriction the utility model discloses the range of implementing, the event all according to the utility model discloses the equivalent change or the decoration that structure, characteristic and principle were done of application for patent scope all should be included in the utility model discloses the patent application scope.

Claims

1. A process cartridge detachably mountable to an image forming apparatus, said process cartridge including a drum frame, a developing frame, a photosensitive drum rotatably supported on said drum frame, and a developing roller rotatably supported on said developing frame, characterized in that:

the developing frame rotates between a contact position and a spaced position relative to the drum frame;

the photosensitive drum comprises a drum barrel and a first driving assembly arranged at one axial end of the drum barrel, the developing roller comprises a roller body and a second driving assembly arranged at one axial end of the roller body, and the first driving assembly and the second driving assembly are positioned on the same side of the processing box;

in the contact position, the roller body is in contact with the drum, and in the spaced position, the roller body is separated from the drum;

the first driving assembly comprises a transmission gear and a driving head which are connected with each other, and the driving head is used for receiving the rotating force of the imaging device;

the second driving assembly comprises a driving gear, a movable piece and an elastic piece, wherein the first end of the movable piece is connected with the roller body, the second end of the movable piece can be connected with the driving gear, the driving gear is meshed with the transmission gear, and the elastic piece forces the movable piece to be close to the driving gear;

the process cartridge further includes a separation mechanism which receives a force of the image forming apparatus to rotate the developing frame from the contact position to the spaced position;

the separation mechanism separates the movable member and the drive gear by moving the movable member in the axial direction of the roller body in accordance with the rotation of the developing frame from the contact position to the spaced position.

2. A process cartridge according to claim 1, wherein:

the separation mechanism comprises a stress part and a guide part connected with the stress part, the developing frame is provided with a limiting hole for the stress part to penetrate through, and the stress part can receive the acting force of the imaging equipment;

the guide portion set up with the waist shape hole that the moving part rotation cup jointed, just one side of guide portion is provided with the boss, the boss with the part that the moving part is inconsistent has the inclined plane.

3. A process cartridge according to claim 2, wherein:

the moving part includes interconnect's first cylinder and shaft shoulder, first cylinder runs through waist shape hole set up and can with drive gear connects, the boss is contradicted on the terminal surface of shaft shoulder.

4. A process cartridge according to claim 1, wherein:

the separating mechanism comprises a pushing piece and a linkage piece, the linkage piece is rotatably sleeved at one end of the driving gear, and a first boss is arranged on one side of the linkage piece;

the pushing piece is provided with a stress part and a guide part connected with the stress part, the developing frame is provided with a limiting hole for the stress part to penetrate through, and the stress part can receive the acting force of the imaging equipment;

the guide part is provided with a round hole which is rotationally sleeved with the moving part, a second boss is arranged on one side of the guide part, the part, abutted against the first boss, of the second boss is an inclined plane, and the pushing part is used for enabling the moving part to move along the axial direction of the roller body.

5. A process cartridge according to claim 4, wherein:

the moving part includes interconnect's first cylinder and shaft shoulder, first cylinder runs through the round hole setting and can with drive gear connects, the guide portion is contradicted on the terminal surface of shaft shoulder.

6. A process cartridge according to claim 3 or 5, wherein:

the end face of the first cylinder is provided with a plurality of protrusions, one end, close to the first cylinder, of the driving gear is provided with a plurality of grooves, and the protrusions can be inserted into the grooves.

7. A process cartridge according to claim 3 or 5, wherein:

the moving part still includes the second cylinder, the second cylinder with the shaft shoulder is kept away from the one end of first cylinder is connected, the second cylinder has excellent arc section, excellent arc hole has been seted up to the one end of roll body, excellent arc section can be followed roll body axial displacement ground with excellent arc hole cooperation, the cross-section of excellent arc section is excellent cambered surface.

8. A process cartridge according to claim 7, wherein:

the elastic piece is a spring, and the spring is sleeved on the second column body and is pressed between the shaft shoulder and the roller body in a propping mode.

9. A process cartridge according to claim 7, wherein:

the first cylinder, the shaft shoulder, the second cylinder and the roller body are all coaxially arranged.

10. A process cartridge according to any one of claims 1 to 5, wherein:

the process cartridge further includes an end cap installed at one side of the developing frame, the driving gear being rotatably supported on the end cap.