Patent ID: 6072969
Filing Date: 2000-06-06
Classification: G03G

Abstract:
A developing cartridge for developing a latent image formed on a photosensitive member, wherein said developing cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus, said developing cartridge comprising:a cartridge frame;developing means for developing, with the toner, the latent image formed on the photosensitive member of the main assembly of the apparatus, when said cartridge is mounted to the main assembly of the electrophotographic image forming apparatus;a first projected portion outwardly projected from said cartridge frame portion adjacent one longitudinal end of said developing means, wherein said first projected portion is supported by a first supporting member provided in the main assembly of the apparatus when said cartridge is mounted to the main assembly;a second projected portion outwardly projected from said cartridge frame portion adjacent the other longitudinal end of said developing means, wherein said second projected portion is supported by a second supporting member provided in the main assembly of the apparatus when said cartridge is mounted to the main assembly;a first urging force receptor portion outwardly projected from said cartridge frame portion adjacent said one longitudinal end of said developing means, wherein said first urging force receptor portion receives an urging force by a first elastic member provided in the main assembly when said cartridge is mounted to the main assembly;a second urging force receptor portion outwardly projected from said cartridge frame portion adjacent the other longitudinal end of said developing means, wherein said second urging force receptor portion receives an urging force by a second elastic member provided in the main assembly when said cartridge is mounted to the main assembly;a first contact portion outwardly projected from said cartridge frame portion adjacent said one longitudinal end of said developing means, wherein said first contact portion contacts a first fixed portion provided in the main assembly when said cartridge is mounted to the main assembly;a second contact portion outwardly projected from said cartridge frame portion adjacent the other longitudinal end of said developing means, wherein said second contact portion contacts a second fixed portion provided in the main assembly when said cartridge is mounted to the main assembly.