JP2010092078A5 - - Google Patents

Claims (13)

A process cartridge that can be attached to the main body of the electrophotographic image forming apparatus and removable in the direction opposite to the attaching direction thereof,
A photosensitive drum on which an electrostatic latent image is formed;
A developing roller that is movable between a contact position that contacts the photosensitive drum to develop the electrostatic latent image and a separated position that is separated from the photosensitive drum;
A cartridge frame that supports the photosensitive drum and the developing roller;
A projecting member capable of taking a projecting position projecting outward from the cartridge frame and a retracted position retracted from the projecting position toward the inside of the cartridge frame, wherein the process cartridge is mounted and the projecting A separation force receiving portion for receiving a separation force for moving the developing roller from the contact position to the separation position in a state where the member is located at the projection position, and the state where the projection member is located at the projection position. A projecting member having a retracting force receiving portion for receiving a force toward the retracted position when the process cartridge is removed;
A process cartridge comprising:   2. The process cartridge according to claim 1, wherein in the mounting direction, the separation force receiving portion is provided on a downstream side of the protruding member, and the retracting force receiving portion is provided on an upstream side of the protruding member. . An urging portion that urges the projecting member in a projecting direction;
An engagement position for engaging with the protruding member to position the protruding member at the retracted position against the urging force of the urging portion, and an engagement with the protruding member to protrude the protruding member. A release position to be released, and an engaging portion movable between,
The process cartridge according to claim 1, comprising:   The process cartridge according to claim 3, wherein the engagement portion releases the engagement with the protruding member by receiving a force from the apparatus main body.   The process cartridge according to claim 3, wherein the engaging portion is provided in the developing frame.   The process cartridge according to claim 3, wherein the engaging portion is provided in the drum frame.   The process according to claim 3, further comprising a release member that releases the engagement between the engagement portion and the protruding member by moving with a force received from the apparatus main body. cartridge.   The process cartridge according to claim 7, wherein the engagement portion and the release member are integrally provided.   The process cartridge according to claim 7, wherein the release member is movably provided on the developing frame.   And a gear for releasing the engagement with the projecting member by moving the engagement portion by rotating by receiving a driving force from the apparatus main body with the process cartridge mounted. Item 4. The process cartridge according to Item 3.   The process cartridge according to claim 3, wherein the engaging portion is biased in a direction to engage with the protruding member in order to hold the protruding member at the retracted position. The cartridge frame includes a drum frame that supports the photosensitive drum, and a developing frame that supports the developing roller and is rotatable with respect to the drum frame.
The process cartridge according to claim 1, wherein the projecting member is configured to project in a direction away from a rotation axis of the developing frame with respect to the drum frame.   An electrophotographic image forming apparatus comprising: the process cartridge according to claim 1; and the apparatus main body.