Image forming apparatus having color editing function

Details Image forming apparatus having color editing function Image forming apparatus having color editing function

1987-11-13

1990-06-19

Braun, Fred L.

Photocopying

Contact printing

Light boxes

355253, 355328, G03G 1508

Patent

active

049357816

ABSTRACT:
An image forming apparatus which includes a color editing function is provided with two developing units, each of the developing units contain an impeding device for impeding flow of the developer as it is transported on a peripheral surface of the developing sleeve locally in the axial direction of the roller. An image editing device is provided for specifying an optical area of a desired image to be produced and a controller is provided for controlling the developing units so as to permit development of a specified area by one developing unit and to develop any unspecified area by the other developing unit.

REFERENCES:
patent: 2910963 (1959-11-01), Herman
patent: 3914043 (1975-10-01), McVeigh
patent: 3960445 (1976-06-01), Drawe
patent: 4373798 (1983-02-01), Tsukada et al.
patent: 4572102 (1986-02-01), Yuge et al.
patent: 4641602 (1987-02-01), Kasai
patent: 4657376 (1987-04-01), Ide
patent: 4685794 (1987-08-01), Watanabe
patent: 4743946 (1988-05-01), Nishimori et al.

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