CN210742682U - Processing box - Google Patents

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

process cartridge

technical field

The utility model relates to the technical field of printing consumables, in particular to a process cartridge that is detachably mounted on an imaging device.

Background technique

An electrophotographic image forming apparatus usually has an image processing unit and a developing unit. The electrostatic latent image formed on the image processing unit is developed using a developer such as toner provided by the developing unit to form a visible image on a medium such as paper. Among them, as a consumable, toner needs to be continuously replenished in the electrophotographic image forming apparatus. Generally, a process cartridge having a certain amount of toner contained in the developing unit detachably installed in the electrophotographic image forming apparatus is used to provide toner to the developing unit.

Referring to FIGS. 1 and 2, an existing process cartridge 1 includes a driving assembly, a developing roller 14, a stirring 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 first driving assembly 11 and a first driving assembly. Two drive assemblies 12, the first drive assembly 11 drives the photosensitive drum 13 to rotate, the second drive assembly 12 drives the developing roller 14, the stirring frame and the powder feed roller to rotate, the second drive assembly 12 includes a clutch 121, a second drive head 122, a drive Gear 123 and spring 124. During the image forming process 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 , and the first driving assembly 11 receives the driving force of the first driving head in the image forming apparatus, thereby driving the photosensitive drum 13 When rotated, the second driving head 122 receives the driving force of the second driving head in the image forming apparatus, thereby driving the developing roller 14, the stirring frame and the powder feeding roller to rotate. When the process cartridge 1 is printing in the image forming apparatus, in order to improve the printing quality, the photosensitive drum 13 needs to be cleaned at the printing gap. Since the photosensitive drum 13 and the developing roller 14 are always in contact during printing, during the cleaning process, the two separate. When the process cartridge 1 is cleaning the photosensitive drum 13, the clutch 121 disengages the second driving head 122 from the driving gear 123, and the second driving head in the image forming apparatus continues to drive the second driving head 122 to rotate. The drive head 122 is separated, the drive gear 123 stops rotating, and the developing roller 14, the stirring frame and the powder feeding roller all stop rotating. At this time, the first drive head in the imaging device continues to drive the first drive assembly 11 to rotate, thereby driving the photosensitive drum. 13 rotates to clean the remaining powder on the photosensitive drum 13 .

However, in addition to driving the developing roller 14 to rotate, the second driving assembly 12 of the existing process cartridge 1 also needs to drive the powder feeding roller and the stirring frame to rotate, and the entire gear transmission structure is complicated, resulting in high assembly difficulty and high production cost of the process cartridge 1 and low production efficiency.

SUMMARY OF THE INVENTION

In order to solve the above problems, the main purpose 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 main purpose, the present invention provides a process cartridge, which is detachably mounted to an imaging device, the process cartridge includes a drum frame, a developing frame, a photosensitive drum, a developing roller and a separation mechanism, and the photosensitive drum is rotatably supported On the drum frame, the developing roller is rotatably supported on the developing frame, the developing frame rotates relative to the drum frame between a contact position and a spaced position, and the photosensitive drum includes a drum and a first drive assembly mounted on one axial end of the drum , the developing roller includes a roller body and a second drive assembly installed at one axial end of the roller body, the first drive assembly and the second drive assembly are located on the same side of the process cartridge, in the contact position, the roller body is in contact with the drum, at the In the spaced position, the roller body is separated from the drum, the first drive assembly includes a transmission gear and a drive head connected to each other, the drive head is used for receiving the rotational force of the image forming device, the second drive assembly includes a drive gear, a movable part and an elastic part, the movable The first end of the piece is connected with the roller body, the second end of the movable piece can be connected with the drive gear, the drive gear and the transmission gear are meshed with each other, the elastic piece forces the movable piece to be close to the drive gear, and the separation mechanism can receive the force of the imaging device to develop The frame is rotated from the contact position to the spaced position, and the separation mechanism separates the movable member from the drive gear by moving the movable member in the axial direction of the roller body according to the rotation of the developing frame from the contact position to the spaced position.

It can be seen from the above scheme that the first end of the movable part is connected to the roller body, the second end of the movable part can be connected to the drive gear, the drive gear and the transmission gear are meshed with each other, the elastic part forces the movable part to be close to the drive gear, and the separation mechanism can receive the image. The force of the equipment makes the developing frame rotate from the contact position to the spacing position, and the separation mechanism separates the movable member from the drive gear by moving the movable member along the axial direction of the roller body according to the rotation of the developing frame from the contact position to the spacing position, The drive head drives the drum to rotate to clean the surface, and the working stability is good. Moreover, the structure of the process cartridge is simple, which can effectively reduce the production cost and improve the production efficiency. At the same time, when the process cartridge is placed in or taken out from the image forming apparatus, the resistance is small, and the installation or taking out operation is more convenient and labor-saving.

A further solution is that the separation mechanism includes a force-receiving part and a guide part connected to the force-receiving part; There is a waist-shaped hole that is rotatably sleeved with the movable piece, and one side of the guide portion is provided with a boss, and the part of the boss that collides with the movable piece has an inclined surface.

A further solution is that the movable member includes a first cylinder and a shaft shoulder that are connected to each other, the first cylinder is disposed through the waist-shaped hole and can be connected to the drive gear, and the boss abuts on the end surface of the shaft shoulder.

A further solution is that the separation mechanism includes a pusher and a linkage, the linkage is rotatably sleeved on one end of the drive gear, a first protrusion is provided on one side of the linkage, and the pusher has a force-receiving part and is connected to the force-receiving part. The developing frame is provided with a limit hole through which the force-receiving part can receive the force of the imaging device; A second protruding platform is provided, and the parts of the second protruding platform and the first protruding platform that are in conflict with each other are inclined planes, and the pushing member is used to make the movable member move along the axial direction of the roller body.

A further solution is that the movable member includes a first cylinder and a shaft shoulder which are connected to each other, the first cylinder is disposed through the circular hole and can be connected with the driving gear, and the guide part abuts on the end surface of the shaft shoulder.

A further solution is that a plurality of protrusions are provided on the end surface of the first cylinder, and a plurality of grooves are formed at one end of the driving gear close to the first cylinder, and the protrusions can be inserted into the grooves.

A further solution is that the movable part further includes a second cylinder, the second cylinder is connected with the end of the shaft shoulder away from the first cylinder, the second cylinder has a superior arc section, and one end of the roller body is provided with a superior arc hole. , the superior arc segment can move along the axial direction of the roller body to match the superior arc hole, and the cross section of the superior arc segment is the superior arc surface.

A further solution is that the elastic member is a spring, and the spring is sleeved on the second cylinder and pressed between the shaft shoulder and the roller body.

A further solution is that the first column body, the shaft shoulder, the second column body and the roller body are all arranged coaxially.

In a further solution, the process cartridge further includes an end cover, the end cover is mounted on one side of the developing frame, and the driving gear is rotatably supported on the end cover.

Description of drawings

FIG. 1 is a structural diagram of a conventional process cartridge.

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

FIG. 3 is a structural diagram of the first embodiment of the process cartridge of the present invention.

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

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

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

7 is an exploded view of the cooperation between the second drive assembly and the separation mechanism in the first embodiment of the process cartridge of the present invention.

8 is a structural diagram of the cooperation between the second drive assembly and the separation mechanism in the first embodiment of the process cartridge of the present invention.

9 is a structural diagram of a pusher in the first embodiment of the process cartridge of the present invention.

FIG. 10 is a structural diagram of the movable part in the first embodiment of the process cartridge of the present invention.

11 is a structural diagram of the cooperation between the second drive assembly and the separation mechanism in the second embodiment of the process cartridge of the present invention.

12 is an exploded view of the cooperation between the second drive assembly and the separation mechanism in the second embodiment of the process cartridge of the present invention.

The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

Detailed ways

The first embodiment of the process cartridge:

3 and 4, the process cartridge 2 is detachably installed into the image forming apparatus, the process cartridge 2 includes a drum frame 21, a developing frame 22, a photosensitive drum, a developing roller, a separation mechanism and an end cap 27, the photosensitive drum is rotatably supported On the drum frame 21 , the developing roller is rotatably supported on the developing frame 22 . The photosensitive drum includes a drum 23 and a first drive assembly installed at one axial end of the drum 23, the developing roller includes a roller body 24 and a second drive assembly installed at one axial end of the roller body 24, the first drive assembly and the first drive assembly. The two drive assemblies are located on the same side of the process cartridge 2 . The developing frame 22 is rotated relative to the drum frame 21 between a contact position and a spaced position. 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 transmission gear 26 and a driving head 25 which are connected to each other. The driving head 25 is used for receiving the rotational force of the image forming apparatus, thereby driving the transmission gear 26 to rotate, and driving the drum 23 to rotate.

Referring to FIGS. 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 meshed with each other. The end cover 27 is installed on one side of the developing frame 22 , and the driving gear 28 is rotatably supported on the end cover 27 . Specifically, cylinders 281 and 282 extend outward from both axial ends of the driving gear 28 , and the end cover 27 is provided with support holes for the two cylinders 281 and 282 to be rotatably matched, so that the driving gear 28 can be rotated. It is supported on the end cover 27. The cylindrical body 282 on the side of the driving gear 28 close to the movable member 32 has a circular platform 283 protruding from the driving gear 28 . The diameter of the circular platform 283 is smaller than the diameters of the cylindrical bodies 281 and 282 . Three grooves 284 are defined on the end surface of the round table 283 close to the movable member 32 , and the three grooves 284 are evenly arranged around the axis of the driving gear 28 .

7 and 10 , the movable member 32 includes a first cylinder 321 , a shaft shoulder 322 and a second cylinder 323 that are connected to each other in sequence, and the diameter of the shoulder 322 is larger than that of the first cylinder 321 and the second cylinder, respectively. 323 diameter. Three protrusions 324 are provided on the end surface of the first cylinder 321 , the three protrusions 324 are evenly arranged around the axis of the first cylinder 321 , and the three protrusions 324 can be inserted into the three grooves 284 respectively. One end of the second cylinder 323 away from the shaft shoulder 322 is a superior arc segment 325, and the cross section of the superior arc segment 325 is a superior arc surface. One end of the roller body 24 is provided with a superior arc hole (not marked), and the superior arc segment 325 can be moved along the axial direction of the roller body 24 to fit with the superior arc hole. The elastic member 33 is a spring, and the spring is sleeved on the second cylinder 323 and pressed between the shaft shoulder 322 and the roller body 24 , thereby forcing the movable member 32 to approach the driving gear 28 . The first cylinder 321 , the shaft shoulder 322 , the second cylinder 323 and the roller body 24 are all arranged coaxially. The driving gear 28 receives the rotational force by intermeshing with the transmission gear 26 . When the three protrusions 324 are inserted into the three grooves respectively After entering 284, the driving gear 28 drives the movable member 32 to rotate, and drives the roller body 24 to rotate.

5 to 9, the separation mechanism is located between the drive gear 28 and the movable member 32, and the separation mechanism can receive the 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 member 32 and the driving gear 28 by moving the movable member 32 along the axial direction of the roller body 24 according to the rotation of the developing frame 22 from the contact position to the spaced position.

Specifically, the separation mechanism includes a pushing member 31 and a linkage member 29 . The body of the linking member 29 is a ring structure, which is rotatably sleeved on the circular platform 283 of the driving gear 28 . The pushing member 31 has a force receiving part 311 and a guiding part 313 connected with the force receiving part 311 , and the force receiving part 311 can receive the force of the imaging device. The main body of the guide portion 313 is a ring structure, the ring structure is provided with a circular hole 312 that is rotatably sleeved with the first cylinder 321 of the movable member 32, and the end surface of the ring structure close to the driving gear 28 protrudes to form the first column. With the two protruding platforms 314 , the end face of the ring structure away from the driving gear 28 abuts against the end face of the shoulder portion 322 of the movable member 32 . The parts of the second protruding platform 314 and the first protruding platform 291 in contact with each other are inclined surfaces 315 and 292 , and the pushing member 31 is used to move the movable member 32 along the axial direction of the roller body 24 .

Referring to FIG. 6 , the side wall 221 of the developing frame 22 is provided with a limiting hole 2211 through which the force-receiving portion 311 of the pushing member 31 is disposed. When the force-receiving portion 311 receives the force of the image forming apparatus, the developing frame 22 is driven from the contact The position is rotated to the spaced position. As the developing frame 22 is rotated from the contact position to the spaced position, the guide portion 313 of the push member 31 is rotated. The parts in conflict with each other are the inclined surfaces 315 and 292 , so that the guide part 313 moves away from the driving gear 28 along with the rotation of the guiding part 313 , forcing the movable part 32 to move away from the driving gear 28 , so that the space between the movable part 32 and the driving gear 28 is forced to move away from the driving gear 28 . separation.

After the process cartridge 2 is installed in the image forming apparatus, in the normal printing state of the image forming apparatus, the developing frame 22 is in the contact position relative to the drum frame 21, and the roller body 24 of the developing roller is in contact with the drum 23 of the photosensitive drum. The force receiving portion 311 does not receive the force of the image forming apparatus, and the movable member 32 and the driving gear 28 are connected and cooperated so as to receive the driving force from the transmission gear 26 to make the developing roller rotate. During the printing process of the process cartridge 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 the toner is stably transferred from the roller body 24 of the developing roller to the drum of the photosensitive drum 23, and then realize a series of exposure, development, transfer and other laser printing on the 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 part 311 of the pusher 31 of the process cartridge 2, and as the force-receiving part 311 receives the force of the image forming apparatus, the 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. At the same time, with the rotation of the developing frame 22 from the contact position to the spaced position, the guide portion 313 of the push member 31 rotates, due to the part where the second protrusion 314 on the guide portion 313 and the first protrusion 291 on the linkage member 29 collide with each other Both are inclined surfaces 315 and 292 , so that the guide portion 313 moves away from the driving gear 28 along with the rotation of the guiding portion 313 , forcing the movable member 32 to move away from the driving gear 28 , so that the movable member 32 and the driving gear 28 are separated. At this time, the spring 33 is in a compressed state, and the drive head 25 still receives the rotational force of the imaging device, continues to drive the transmission gear 26 to rotate, and drives the drum 23 and the drive gear 28 to rotate, and the drive gear 28 is in an idling state. Due to the separation between the movable member 32 and the driving gear 28, the roller body 24 of the developing roller stops rotating, and at the same time, the roller body 24 of the developing roller is separated from the drum 23 of the photosensitive drum, so that the driving head 25 drives the drum 23 to rotate to clean its surface .

When the drum 23 of the photosensitive drum is cleaned, the pushing member 31 and the linking member 29 of the process cartridge 2 are reset, and the spring 33 forces the movable member 32 to approach the driving gear 28 under the action of its restoring force, so that the movable member 32 and the driving The connection and cooperation between the gears 28 continue to drive the roller body 24 of the developing roller to rotate, so as to supply powder to the drum 23 of the photosensitive drum, thereby enabling the imaging device to continue printing, effectively ensuring the transfer of toner between the developing roller and the photosensitive drum. Make the process cartridge 2 more uniform and stable in printing quality. Moreover, the structure of the process cartridge 2 is simple, which can effectively reduce the production cost and improve the production efficiency. At the same time, when the process cartridge 2 is placed in or taken out from the image forming apparatus, the resistance is small, and the installation or take-out operation is more convenient and labor-saving.

The second embodiment of the 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.

11 and 12, the separation 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 limiting hole 2211 through which the force-receiving portion 341 is disposed. The force receiving part 341 can receive the force of the imaging device. The guide portion 342 is provided with a waist-shaped hole 343 that is rotatably sleeved with the first cylinder 321 of the movable member 32 , and a boss 344 is provided on the side of the guide portion 342 facing the movable member 32 , and the boss 344 abuts against the movable member 32 . On the end surface of the shaft shoulder 322 of the 1 , the part where the boss 344 collides with the shaft shoulder 322 has an inclined surface 345 .

After the process cartridge 2' is installed in the image forming apparatus, in the normal printing state of the image forming apparatus, the developing frame 22 is in the contact position relative to the drum frame 21, and the roller body 24 of the developing roller is in contact with the drum 23 of the photosensitive drum. At this time, the separation mechanism 34 The force-receiving portion 341 of the device does not receive the force of the image forming apparatus, and the movable member 32 is connected with the driving gear 28 to receive the driving force from the transmission gear 26 to make the developing roller rotate. During the printing process of the process cartridge 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 the toner is stably transferred from the roller body 24 of the developing roller to the drum of the photosensitive drum. On the drum 23, a series of laser printing such as exposure, development, transfer, etc. are realized on the 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 part 341 of the separation mechanism 34 of the process cartridge 2'. Then, 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. At the same time, along with the rotation of the developing frame 22 from the contact position to the spaced position, the guide portion 342 of the separation mechanism 34 rotates, since the part where the boss 344 on the guide portion 342 collides with the shoulder portion 322 on the movable member 32 is the inclined surface 345 , and the guide portion 342 is matched with the first cylinder 321 through the waist hole 343 , thereby forcing the movable member 32 to move away from the driving gear 28 along with the rotation of the guiding portion 342 , so that the movable member 32 and the driving gear 28 are separated. At this time, the spring 33 is in a compressed state, and the drive head 25 still receives the rotational force of the imaging device, continues to drive the transmission gear 26 to rotate, and drives the drum 23 and the drive gear 28 to rotate, and the drive gear 28 is in an idling state. Due to the separation between the movable member 32 and the driving gear 28, the roller body 24 of the developing roller stops rotating, and at the same time, the roller body 24 of the developing roller is separated from the drum 23 of the photosensitive drum, so that the driving head 25 drives the drum 23 to rotate to clean its surface .

When the drum 23 of the photosensitive drum is cleaned, the separation mechanism 34 of the process cartridge 2' is reset, and at the same time, the spring 33 forces the movable member 32 to approach the driving gear 28 under the action of its restoring force, thereby making the movable member 32 and the driving gear 28 close to each other. It is connected and cooperated with each other, and continues to drive the roller body 24 of the developing roller to rotate, so as to supply powder to the drum 23 of the photosensitive drum, and then realize the continuous printing of the imaging device, effectively ensure the transfer of toner between the developing roller and the photosensitive drum, and make the process cartridge 2' The powder output is more uniform and the printing quality is stable. Moreover, the structure of the process cartridge 2' is simple, which can effectively reduce the production cost and improve the production efficiency. At the same time, when the process cartridge 2' is placed in or taken out from the image forming apparatus, the resistance is small, and the installation or taking out operation is more convenient and labor-saving.

The above embodiments are only preferred examples of the present utility model, and are not intended to limit the scope of implementation of the present utility model. Therefore, any equivalent changes or modifications made according to the structure, features and principles of the claimed scope of the present utility model shall be included in the This utility model patent application scope.

Claims (10)

1. A process cartridge that is detachably mounted to an image forming apparatus, the process cartridge comprising a drum frame, a developing frame, a photosensitive drum, and a developing roller, the photosensitive drum being rotatably supported on the drum frame, so The developing roller is rotatably supported on the developing frame, and is characterized in that: the developing frame rotates relative to the drum frame between a contact position and a spaced position; The photosensitive drum includes a drum and a first drive assembly installed at one axial end of the drum, the developing roller includes a roller body and a second drive assembly installed at one axial end of the roller body, the the first drive assembly and the second drive assembly are located on the same side of the process cartridge; 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 drive assembly includes an interconnected transfer gear and a drive head for receiving rotational force of the imaging device; The second drive assembly includes a drive gear, a movable piece and an elastic piece, 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 drive gear, and the drive The gear and the transmission gear are meshed with each other, and the elastic member forces the movable member to approach the driving gear; The process cartridge further includes a separation mechanism capable of receiving the force of the image forming apparatus to rotate the developing frame from the contact position to the spaced position; The separation mechanism separates between the movable member and the drive gear by moving the movable member in the axial direction of the roller body according to the rotation of the developing frame from the contact position to the spaced position . 2. The process cartridge according to claim 1, wherein: The separation mechanism includes a force-receiving portion and a guide portion connected with the force-receiving portion, the developing frame is provided with a limit hole for the force-receiving portion to pass through, and the force-receiving portion can receive the image forming apparatus force; The guide portion is provided with a waist-shaped hole that is rotatably sleeved with the movable piece, and one side of the guide portion is provided with a boss, and the portion of the boss that collides with the movable piece has an inclined surface. 3. The process cartridge according to claim 2, wherein: The movable member includes a first column body and a shaft shoulder that are connected to each other, the first column body is arranged through the waist-shaped hole and can be connected with the driving gear, and the boss abuts on the shaft shoulder portion on the end face. 4. The process cartridge according to claim 1, wherein: The separation mechanism includes a pusher and a linkage, the linkage is rotatably sleeved on one end of the drive gear, and a first projection is provided on one side of the linkage; The pusher has a force-receiving part and a guide part connected with the force-receiving part, the developing frame is provided with a limit hole for the force-receiving part to pass through, and the force-receiving part can receive the image forming apparatus force; The guide portion is provided with a circular hole that is rotatably sleeved with the movable member, and a second protrusion is arranged on one side of the guide portion, and the second protrusion and the first protrusion are in conflict with each other. Both are inclined planes, and the pushing member is used to move the movable member along the axial direction of the roller body. 5. The process cartridge according to claim 4, wherein: The movable member includes a first cylinder and a shaft shoulder that are connected to each other, the first cylinder is arranged through the circular hole and can be connected with the driving gear, and the guide part is in contact with the shoulder of the shaft. end face. 6. The process cartridge according to claim 3 or 5, wherein: A plurality of protrusions are provided on the end surface of the first cylinder, and a plurality of grooves are formed at one end of the driving gear close to the first cylinder, and the protrusions can be inserted into the grooves. 7. The process cartridge according to claim 3 or 5, wherein: The movable member further includes a second cylinder, the second cylinder is connected to the end of the shaft shoulder away from the first cylinder, the second cylinder has a superior arc section, and the roller body has a One end is provided with a superior arc hole, the superior arc segment can move along the axial direction of the roller body to fit with the superior arc hole, and the cross section of the superior arc segment is a superior arc surface. 8. The process cartridge according to claim 7, wherein: The elastic member is a spring, and the spring is sleeved on the second column body and pressed between the shaft shoulder and the roller body. 9. The process cartridge according to claim 7, wherein: The first column body, the shaft shoulder, the second column body and the roller body are all arranged coaxially. 10. The process cartridge according to any one of claims 1 to 5, wherein: The process cartridge further includes an end cap mounted on one side of the developing frame, and the drive gear is rotatably supported on the end cap.

Images