CN-224216996-U - Developing cartridge

Abstract

The utility model provides a developing cartridge detachably mounted in an image forming apparatus, the developing cartridge having a housing for accommodating toner and a developing roller rotatably provided in the housing, the developing roller being for supplying toner to a photosensitive drum outside the developing cartridge, a developing roller rotation axis extending direction being a longitudinal direction, the developing cartridge further comprising an action mechanism for urging the developing roller into contact with and out of contact with the photosensitive drum, the action mechanism including a first action member located at one end of the housing in the longitudinal direction, the first action member including a first portion for receiving a contact force applied by the image forming apparatus, the contact force being for urging the developing roller and the photosensitive drum into contact with each other, a second portion for receiving a separation force applied by the image forming apparatus, the separation force being for urging the developing roller and the photosensitive drum apart, and a first elastic member at least for transmitting the contact force, provided between the first portion and the second portion, the first portion being movable with respect to the second portion, and both the first portion and the second portion being made of a rigid material.

Inventors

• FAN WENYI

Assignees

• 中山傲影科技有限公司

Dates

Publication Date

20260508

Application Date

20250606

Priority Date

20240607

Claims (10)

1. 1. A developing cartridge detachably mounted in the image forming apparatus, the developing cartridge having a housing for accommodating toner and a developing roller rotatably provided in the housing, the developing roller for supplying toner to a photosensitive drum outside the developing cartridge, a developing roller rotation axis extending direction being a longitudinal direction; The developing cartridge further includes an action mechanism for urging the developing roller into and out of contact with the photosensitive drum, the action mechanism including a first action member at one end of the casing in a longitudinal direction, The first acting member includes: A first portion for receiving a contact force applied by the image forming apparatus, the contact force for forcing the developing roller and the photosensitive drum into contact with each other; A second portion for receiving a separation force applied by the image forming apparatus, the separation force for forcing the developing roller to separate from the photosensitive drum, And a first elastic member for transmitting at least the contact force, disposed between the first portion and the second portion; Wherein the first portion is moveable relative to the second portion and both the first portion and the second portion are made of a rigid material.
2. 2. The developing cartridge according to claim 1, wherein the first portion and the second portion are formed separately.
3. 3. The developer cartridge according to claim 1, wherein the first portion and the second portion are movable together when one of the first portion and the second portion is subjected to a force.
4. 4. The developing cartridge according to claim 1, further comprising A driving assembly for receiving a rotational driving force output from the image forming apparatus to directly or indirectly drive the developing roller to rotate; a clutch for controlling the switching of the internal components of the drive assembly between a disengaged state and an engaged state; The clutch member is configured to move smoothly in a direction intersecting the longitudinal direction, and the clutch member is switched between a first state and a second state by a smoothly moving manner, thereby switching the driving assembly internal member between a disengaged state and an engaged state.
5. 5. The developing cartridge according to claim 4, wherein the driving assembly inner member is in a coupled state and the developing roller and the photosensitive drum are in a state of being close to each other when the clutch member is in the second state, and wherein the driving assembly inner member is in a separated state and the developing roller and the photosensitive drum are in a separated state when the clutch member is in the first state.
6. 6. The developing cartridge according to claim 4, wherein the clutch member is in a second state in which the driving assembly inner member is in a coupled state, the driving assembly is capable of transmitting the driving force to the developing roller, and wherein the clutch member is in a first state in which the driving assembly inner member is in a separated state, and the driving assembly is incapable of transmitting the driving force to the developing roller.
7. 7. The developing cartridge according to claim 4, wherein the clutch member further includes a clutch main body, and a third engaging portion formed on the clutch main body, the developing cartridge further includes a third engaged portion for engaging with the third engaging portion, and the third engaging portion is slidably engaged with the third engaged portion in a direction intersecting the longitudinal direction.
8. 8. The developing cartridge according to claim 7, wherein the clutch member moves with the rotation of the first acting member, thereby bringing the clutch member into smooth movement along the third engaged portion.
9. 9. The developing cartridge according to claim 1, further comprising an end cap provided at a longitudinal end of the housing and a chip for storing information about the developing cartridge; When the developing cartridge is viewed in the longitudinal direction, the action mechanism is not exposed to the outside of the developing cartridge when the developing cartridge is in a posture in which the action mechanism and the chip are located at the lower portion of the developing cartridge, and the action mechanism is blocked by the end cap.
10. 10. A developing cartridge according to any one of claims 1-9, wherein said action mechanism further includes a second action member at the other end of the casing; The developing cartridge further includes a connector extending in a longitudinal direction; The sum of distances that the connecting member, the first acting member, and the second acting member extend in the longitudinal direction is greater than the distance that the developing roller extends in the longitudinal direction.

Description

Developing cartridge The present utility model requires that the present inventors filed under the name of "developing cartridge" to the chinese patent office on the day 07 of 2024, the prior application with application number 202421315735.9, the present inventors filed under the name of "developing cartridge" to the chinese patent office on the day 06 of 2024, the prior application with application number 202422193628.X, and the present inventors filed under the name of "developing cartridge" to the chinese patent office on the day 13 of 2024, the content of which is cross-referenced in the present utility model, the prior application with application number 202422258038.0. Technical Field The present utility model relates to the field of electrophotographic image forming, and more particularly, to a developing cartridge detachably mountable to an electrophotographic image forming apparatus. Background The developing cartridge is an essential part of the image forming apparatus, and has a housing for accommodating toner and a developing roller rotatably provided in the housing for carrying toner and supplying toner toward a photosensitive drum outside the developing cartridge to develop an electrostatic latent image on the surface of the photosensitive drum, the developing roller extending in a longitudinal direction along a rotation axis thereof, a first end cap provided at one end of the housing and a bracket for supporting a rotating member such as the developing roller, and a force mechanism for receiving a force from the image forming apparatus to force the developing roller and the photosensitive drum to contact each other and/or separate each other is generally provided for preventing damage to the developing roller and the photosensitive drum caused by long-term contact when the developing cartridge is not necessary. In the existing developing cartridge, the action mechanism is provided with a first action member positioned at one end of the housing, the first action member is provided with a first part for receiving the contact force and a second part for receiving the separation force, the first part is not movable relative to the second part, and when the first action member receives the contact force and the separation force, the impact force received by the first action member is large, so that the developing cartridge is unstable in movement. Disclosure of utility model In view of the above, the present utility model provides a developing cartridge adopting the following technical solutions to solve at least one of the above problems, specifically: A developing cartridge detachably mounted in the image forming apparatus, the developing cartridge having a housing for accommodating toner and a developing roller rotatably provided in the housing, the developing roller for supplying toner to a photosensitive drum outside the developing cartridge, a developing roller rotation axis extending direction being a longitudinal direction; The developing cartridge further includes an action mechanism for urging the developing roller into and out of contact with the photosensitive drum, the action mechanism including a first action member located at one end of the casing in a longitudinal direction, the first action member including a first portion for receiving a contact force applied by the image forming apparatus for urging the developing roller into contact with the photosensitive drum, a second portion for receiving a separation force applied by the image forming apparatus for urging the developing roller into separation from the photosensitive drum, and a first elastic member for transmitting at least the contact force, disposed between the first portion and the second portion, wherein the first portion is movable relative to the second portion, and both the first portion and the second portion are made of a rigid material. Further, the first portion and the second portion are formed separately. Further, the first portion and the second portion are movable together when one of the first portion and the second portion is subjected to a force. Further, the developing cartridge further includes a driving assembly for receiving a rotational driving force outputted from the image forming apparatus to directly or indirectly drive the developing roller to rotate, a clutch member for controlling the driving assembly to switch between a separated state and a coupled state, the clutch member being configured to smoothly move in a direction intersecting the longitudinal direction, the clutch member being switched between a first state and a second state by a smoothly moving movement manner, thereby switching the driving assembly to the separated state and the coupled state. Further, when the clutch member is in the second state, the driving assembly internal member is in a coupled state, the developing roller and the photosensitive drum are in a state of being close to each other, and when the clutch member is