Process cartridge and image forming apparatus using same

Details Process cartridge and image forming apparatus using same Process cartridge and image forming apparatus using same

1991-08-29

1993-08-10

Grimley, A. T.

Photocopying

Contact printing

Light boxes

355210, 355260, 355326, 355327, G03G 1500, G03G 2100

Patent

active

052353834

ABSTRACT:
A process cartridge integrally supports an electrophotographic photosensitive member and a plurality of developing units and removable with respect to an image forming apparatus. The driving force from the image forming apparatus can be selectively transmitted to any one of the developing units and the transmission of the driving force to all of the developing units is blocked during the non-image forming process. Thus, the operability of dismounting of the cartridge from the image forming apparatus is improved.

REFERENCES:
patent: 4465357 (1984-08-01), Mugrauer et al.
patent: 4769669 (1988-09-01), Watanabe et al.
patent: 4806968 (1989-02-01), Watanabe et al.
patent: 4984026 (1991-01-01), Nishise et al.
patent: 5038176 (1991-08-01), Yokoyama et al.

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