Ultra-high efficiency intermediate transfer with pre-transfer tr

Details Ultra-high efficiency intermediate transfer with pre-transfer tr Ultra-high efficiency intermediate transfer with pre-transfer tr

1993-09-24

1995-04-11

Royer, William J.

Photocopying

Contact printing

Light boxes

118645, 355275, 355326R, G03G 1501, G03G 1514, G03G 1516

Patent

active

054063590

ABSTRACT:
An image forming apparatus forms a multi-colored image on an image receiving member. The image forming apparatus has a plurality of imaging devices, an image support device and a transferring device. Each imaging device has an imaging drum having a photoconductive layer, a charging device, an exposing device, developing device, a toner charging device and a transferring device. Each imaging device forms and transfers a charged toner image to the image support device. In another embodiment the image forming apparatus has a plurality of imaging devices, an image support device, a plurality of first charging devices and a transferring device. Each one of the plurality of imaging devices produces a toned image. The image support device receives the plurality of toned images from the plurality of imaging devices. The plurality of imaging devices are spaced along a first direction of the image support device. Each one of the first charging devices charges each of the toned images into a charged toned image on the image support device. Each one of the charging devices is located downstream from each of the imaging devices in the first direction. The plurality of charging toned images forms a multi-toned image. The transferring device transfers the multi-toned image on the image support device to the image receiving member.

REFERENCES:
patent: 4162843 (1979-07-01), Inoue et al.
patent: 5172172 (1992-12-01), Amemiya et al.
patent: 5198864 (1993-03-01), Fletcher
patent: 5204716 (1993-04-01), Kasahara et al.
patent: 5285244 (1994-02-01), Bujese

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