Process cartridge, assembling method therefor and electrophotogr

Details Process cartridge, assembling method therefor and electrophotogr Process cartridge, assembling method therefor and electrophotogr

1995-01-30

1996-12-31

Brase, Sandra L.

Electrophotography

Having particular structure

Modular or displaceable

399 64, G03G 1506

Patent

active

055899188

ABSTRACT:
A process cartridge detachably mountable to an image forming apparatus, wherein the image forming apparatus light emitting means and light receiving means cooperative with the light emitting means to detect amount of toner in a part of the process cartridge, the process cartridge includes an electrophotographic photosensitive member; process means actable on the electrophotographic photosensitive member; a toner container, adapted for being mounted in the part, for containing the toner to be used for developing a latent image formed in the electrophotographic photosensitive member; a light transmitting member, provided in the toner container, for transmitting light emitted from the light emitting means to permit detection of the amount of the toner in the toner container when the process cartridge is mounted to a main assembly of the image forming apparatus; a cover member movable between a protecting position for protecting the electrophotographic photosensitive member and a retracted position wherein the cover is retracted from the covering position; wherein upon movement of the cover member from the protecting position to the retracted position when the process cartridge is mounted to the main assembly, the cover member is retracted toward the toner container beyond a position of the light transmitting member.

REFERENCES:
patent: 4462677 (1984-07-01), Onoda
patent: 4470689 (1984-09-01), Nomura et al.
patent: 5036358 (1991-07-01), Yoshida
patent: 5083158 (1992-01-01), Kashima et al.
patent: 5095335 (1992-03-01), Watanabe et al.
patent: 5113220 (1992-05-01), Kwak
patent: 5231453 (1993-07-01), Nakai et al.
patent: 5266999 (1993-11-01), Yashiro
patent: 5303011 (1994-04-01), Noguchi et al.
patent: 5398106 (1995-03-01), Eguchi

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