Process cartridge and electrophotographic image forming apparatus

A process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus including a movable member movable from an outside of the main assembly of the apparatus to an inside thereof while carrying said process cartridge, the process cartridge comprising:

• 1) an electrophotographic photosensitive drum;
• 2) process means actable on said electrophotographic photosensitive drum;
• 3) a portion-to-be-supported for being supported by the movable member to support said process cartridge on the movable member;
• 4) a first portion-to-be positioned, provided on one end side of said process cartridge with respect to the longitudinal direction of said electrophotographic photosensitive drum, for being positioned to a first main assembly side positioning portion provided in the main assembly of the apparatus in a direction crossing with the longitudinal direction of said electrophotographic photosensitive drum;
• 5) a second portion-to-be-positioned, provided on an other end side of said process cartridge with respect to the longitudinal direction of said electrophotographic photosensitive drum, for being positioned to a second main assembly side positioning portion provided in the main assembly of the apparatus in a direction crossing with the longitudinal direction of said electrophotographic photosensitive drum;
• 6) a cartridge side longitudinal positioning portion, provided on the other end side of said process cartridge and exposed in the longitudinal direction, to be positioned to a main assembly side longitudinal positioning portion provided on the main assembly of the apparatus in the longitudinal direction of said electrophotographic photosensitive drum;
• and
• 7) a cartridge side bias contact, provided the other end side of said process cartridge and exposed in the longitudinal direction, for receiving a bias voltage to be supplied to said process means from the main assembly of the apparatus in the state in which said process cartridge is mounted to the main assembly of the apparatus;
• 8) a portion-to-be-urged, provided on an upper surface of the other end side of said process cartridge, for receiving an inclined downward elastic force of a first main assembly side elastic member provided in the main assembly of the apparatus to urge said cartridge side longitudinal positioning portion to the main assembly side longitudinal positioning portion and to urge said second portion-to-be-positioned to the second main assembly side positioning portion,
• wherein said portion-to-be-urged includes a contact portion projected upwardly from said upper surface and contactable to the first main assembly side elastic member to receive a force for urging said cartridge side longitudinal positioning portion to the main assembly side longitudinal positioning portion.