Patent ID: 6782222
Filing Date: 2004-08-24
Classification: G03G

Abstract:
An electrophotographic image formation system for forming an image on a recording material, said system comprising:an electrophotographic image forming apparatus; and a process cartridge detachably mountable on said electrophotographic image forming apparatus, wherein said electrophotographic image forming apparatus comprises: a main assembly; a main assembly antenna; and a main assembly antenna outer casing member configured and positioned to cover said main assembly antenna, wherein said main assembly antenna outer casing member is rotatably supported on said main assembly of said apparatus, wherein said process cartridge comprises: an electrophotographic photosensitive member; process means actable on said electrophotographic photosensitive member; a storing element configured to store information; a memory antenna configured and positioned to communicate with said main assembly antenna; and a memory antenna outer casing member configured and positioned to cover said storing element and said memory antenna, wherein when said process cartridge is not mounted to said main assembly of said apparatus, said main assembly antenna outer casing member is in an insertion passage of said process cartridge, and when said process cartridge is mounted to said main assembly of said apparatus through said insertion passage, said main assembly antenna outer casing member rotatably supported on said main assembly of said apparatus is retracted from said insertion passage by being pressed by said process cartridge, and when said process cartridge is mounted to a predetermined position in said main assembly of said apparatus, positioning is effected for a gap between said memory antenna and said main assembly antenna by contact between an outer surface of said memory antenna outer casing member and an outer surface of said main assembly antenna outer casing member of said main assembly antenna.