Image forming apparatus for transferring an image receiving memb

Details Image forming apparatus for transferring an image receiving memb Image forming apparatus for transferring an image receiving memb

1998-02-03

2000-06-20

Lee, Susan S. Y.

Electrophotography

Image formation

Transfer

347153, 399310, G03G 1516

Patent

active

060787775

ABSTRACT:
An electro-photographic copying apparatus includes a conveyor system for moving a transferring device between a first position of engaging a conveyor belt against a photosensitive drum and a second position of the conveyor belt being spaced apart from the photosensitive drum. In the first position, an image on the photosensitive drum may be transferred to an image receiving member. In the second position, the copying apparatus is waiting to make a copy. A tension maintaining mechanism may maintain a constant tension on the conveyor belt when the transferring device is in the first or second positions. The copying apparatus may include a discharge system for discharging the conveyor belt when a transfer roller is positioned at the second position. The copying apparatus may also include a cleaning device for cleaning the transfer roller when the transfer roller is positioned at the second position. A controller controls the rotation of the drum and the belt roller so that they move at the same speed while their moving speed changes during acceleration or deceleration. The outer diameter of the drum, the thickness of the conveyor belt and the outer diameter of the driving roller are selected so that the drum and the belt roller move at the same speed.

REFERENCES:
patent: 4370047 (1983-01-01), Damouth et al.
patent: 4873541 (1989-10-01), Hirose et al.
patent: 5574550 (1996-11-01), Okazaki et al.
patent: 5669054 (1997-09-01), Uchida et al.

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