| 摘要 |
An electrophotographic image forming apparatus includes a cartridge detachably mountable to a main assembly of the apparatus, the cartridge including a photosensitive drum, a drum frame supporting the drum, a force receiving portion for receiving a driving force for driving the drum from the main assembly, and a regulated portion, provided on the drum frame, for regulating rotation of the cartridge; a transfer member for transferring a developer image onto a toner image receiving member; a supporting member movable between an inside position and in which the supporting member detachably supports the cartridge and an outer position and in which the cartridge is mountable and demountable; a moving member capable of taking a first position in which the moving member urges the regulated portion to space the drum from the transfer member and a second position in which the moving member to contact the drum to the transfer member; and a regulating portion for engaging with the regulated portion to regulate rotation of the cartridge when the moving member is in the second position and the force receiving portion receives the force, and for permitting movement of the supporting member between the outer position and the inside position with the regulating portion being in engagement with the regulated portion to limit rotation of the cartridge. |
| 主权项 |
1. An electrophotographic image forming apparatus for forming an image on a recording material, said apparatus comprising:
(i) a cartridge detachably mountable to a main assembly of the apparatus, said cartridge including an electrophotographic photosensitive member, a photosensitive member frame supporting said electrophotographic photosensitive member, a driving force receiving portion for receiving a driving force for driving said electrophotographic photosensitive member from said main assembly of the apparatus, and a portion-to-be-regulated, provided on said photosensitive member frame, for regulating rotation of said cartridge when said driving force receiving portion receives the driving force; (ii) a transfer member for transferring a developer image formed on said electrophotographic photosensitive member onto a toner image receiving member; (iii) a supporting member movable between an inside position which is in said main assembly of the apparatus and in which said supporting member detachably supports said cartridge and an outer position which is outside said main assembly of the apparatus and in which said cartridge is mountable and demountable; (iv) a contacting and spacing member movable relative to said supporting member and capable of taking a first position in which said contacting and spacing member urges said portion-to-be-regulated to space said electrophotographic photosensitive member from said transfer member and a second position in which said contacting and spacing member retracts from the first position to contact said electrophotographic photosensitive member to said transfer member; and (v) a regulating portion for engaging with said portion-to-be-regulated to regulate rotation of said cartridge when said contacting and spacing member is in the second position and said driving force receiving portion receives the driving force, and for permitting, when said contacting and spacing member is in the first position, movement of said supporting member between the outer position and the inside position in a state that said regulating portion is in engagement with said portion-to-be-regulated to limit rotation of said cartridge. |
