CARTRIDGE, PROCESS CARTRIDGE AND ELECTROPHOTOGRAPHIC IMAGE FORMING DEVICE Russian patent published in 2020 - IPC G03G21/18 

FIELD: image forming devices.

SUBSTANCE: present invention relates to an electrophotographic image forming device (image forming device) and a cartridge detachably mounted on a main unit of the image forming device. Claimed group of inventions includes variants of technological cartridges. Process cartridge comprises a photosensitive drum, developing roller configured to develop latent image formed on photosensitive drum, frame having a first end and a second end opposite to the first end relative to the developing roller axial direction, wherein frame with possibility of rotation supports photosensitive drum and developing roller, coupling element, functionally connected to developing roller and including ledge, wherein the engagement member is adjacent to the first end of the frame, the arm movable relative to the frame, and the push member disposed adjacent the first end of the frame, wherein the push member is movable relative to the engagement member between the first position and the second position when the lever moves, and wherein the edge of the push member is located further from the second end of the frame when the push member is in a first position than when the push member is in a second position relative to the developing roller axial direction, wherein, when the push member is in a first position, (a) the edge of the push member extends outward from the frame and (b) the distance from the second end of the frame, the edges of the push member measured along the axial direction of the developing roller are equal to or greater than the distance from the second end of the frame to the edge of the projection of the engagement member, measured along the axial direction, and, when pushing member is in second position, distance from the second end of the frame to the edge of the push member measured along the axial direction is smaller than the distance from the second end of the frame to the edge of the projection of the engagement member measured along the axial direction.

EFFECT: technical result consists in improvement of design for switching transfer of drive to developing roller due to possibility of switching drive for developing roller between cartridge and main assembly of image forming device.

12 cl, 63 dwg