DEVELOPING CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING APPARATUS

• US 20180253055A1
• Filed: 05/04/2018
• Published: 09/06/2018
• Est. Priority Date: 06/04/2012
• Status: Active Grant

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Chino, Hideto
• Granted Patent: US 10,642,216 B2
• Time in Patent Office: Days
• CPC Class Codes: G03G 15/0173 plural rotations of recording member to produce multicoloured copy, e.g. rotating set of developing units G03G15/0163 takes precedence
• CPC Class Codes: G03G 15/0865 Arrangements for supplying new developer
• CPC Class Codes: G03G 21/1647 Mechanical connection means
• CPC Class Codes: G03G 21/1676 for the developer unit

Abstract

A developing cartridge mountable to a development rotary of an electrophotographic image forming apparatus, a coupling member for transmitting a rotational force from a main assembly engaging portion to a developing roller, the coupling member being engageable and disengageable relative to the engaging portion with rotation of the rotary, the coupling member being movable among a rotational force transmitting angular positio, a pre-engagement angular position in which the coupling member is inclined relative to that in the transmitting angular position to engage with the engaging portion, and a disengaging angular position for disengaging therefrom; and an inclination regulating member movable between a regulating position for positioning the coupling member to the pre-engagement position and a retracted position, the inclination regulating member being movable from the retracted position to the regulating position by being abutted by a function member of the rotary.

Claims

1-5. -5. (canceled)

6. A developing cartridge comprising:

a casing including a shaft;

a developing roller, provided in the casing, configured to rotate and carry developer;

a coupling member configured to receive a rotational force for rotating the developing roller, the coupling member being movable between a first position in which a rotational axis of the coupling member is parallel to a rotational axis of the developing roller and a second position in which the rotational axis of the coupling member is inclined relative to the rotational axis of the developing roller; and

a rotatable lever, provided adjacent to the coupling member, including (i) a contact portion contactable with the coupling member and (ii) a bearing portion rotatably supported by the shaft, the rotatable member being rotatable between a contact position in which the contact portion contacts the coupling member and a spaced position in which the contact portion is spaced from the coupling member.

7. A developer cartridge according to claim 6, wherein the rotatable lever is made of resin.

8. A developing cartridge according to claim 6, wherein a rotational axis of the rotatable lever is parallel to the rotational axis of the developing roller.

9. A developer cartridge according to claim 6, wherein the rotatable lever includes a plate portion rotatable integrally with the contact portion.

10. A developer cartridge according to claim 8, wherein the rotatable lever includes a plate portion rotatable integrally with the contact portion.

11. A developer cartridge according to claim 10, wherein the plate portion is disposed at a more outward position than the contact portion with respect to a direction of the rotational axis.

12. A developer cartridge according to claim 9, wherein the plate portion and the contact portion are disposed at different positions with respect to a rotational direction of the rotatable lever.

13. A developer cartridge according to claim 10, wherein the plate portion and the contact portion are disposed at different positions with respect to a rotational direction of the rotatable lever.

14. A developer cartridge according to claim 11, wherein the plate portion and the contact portion are disposed at different positions with respect to a rotational direction of the rotatable lever.