US 7,570,900 B2
Process cartridge receiving from an image forming apparatus into which it is mounted a downstream-moving force during mounting and such image forming apparatus
Kazuo Chadani, Shizuoka-ken (Japan); and Shigeru Hoashi, Numazu (Japan)
Assigned to Canon Kabushiki Kaisha, Tokyo (Japan)
Filed on Apr. 12, 2006, as Appl. No. 11/402,058.
Claims priority of application No. 2005-114237 (JP), filed on Apr. 12, 2005.
Prior Publication US 2006/0228132 A1, Oct. 12, 2006
Int. Cl. G03G 21/16 (2006.01)
U.S. Cl. 399—111 9 Claims
OG exemplary drawing
 
4. An electrophotographic image forming apparatus for forming an image on a recording material, to which a process cartridge is detachably mountable, said apparatus comprising:
(i) an openable member movable between a closing position for closing an opening in said apparatus and an open position for opening the opening;
(ii) a main assembly positioning portion;
(iii) a main assembly movable member movable in interrelation with movement of the openable member; and
(iv) a guiding member that guides the process cartridge, the process cartridge including an electrophotographic photosensitive member, process means actable on the electrophotographic photosensitive member, a cartridge positioning portion, engageable with said main assembly positioning portion, that positions the process cartridge relative to said main assembly of said electrophotographic image forming apparatus, and a cartridge movable member movable by movement of said main assembly movable member;
wherein, when the process cartridge, upon mounting of the process cartridge to said main assembly of said apparatus through the opening while being guided by said guiding member, stops at a position upstream, with respect to a process cartridge mounting direction, of an image formation position where the cartridge positioning portion is engaged with said main assembly positioning portion, and the cartridge movable member is moved by movement of said main assembly movable member to contact said guiding member, by which said guiding member applies, to the cartridge movable member, a force for moving the process cartridge downstream with respect to the mounting direction.