Multiple image forming system

Details Multiple image forming system Multiple image forming system

1987-10-20

1988-11-15

Moses, R. L.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 14E, 355 14D, 355 14CH, 355 7, G03G 1504, G03G 1506

Patent

active

047853301

ABSTRACT:
A multiple image forming system for synthesizing images having different kinds of gradation characteristics of an original comprises: a latent image forming circuit for projecting a reflected light from the original onto a photo sensitive drum and forming an electrostatic latent image onto this drum; a developing unit to develop the latent image; and a control circuit to make the latent image forming circuit and the developing unit operative every gradation characteristic for the different gradation characteristic areas in the original, wherein the control circuit changes the latent image forming conditions such as an amount of exposing light to the original of the latent image forming circuit and the developing conditions such as a developing bias of the developing unit in accordance with the kind of gradation characteristic. With this system, the image areas having different kinds of gradation characteristics which mixedly exist in one original are automatically detected and the latent image forming circuit is automatically properly controlled, so that the proper image is reproduced.

REFERENCES:
patent: 4583839 (1986-04-01), Suzuki
patent: 4701044 (1987-10-01), Horiuchi et al.
patent: 4707709 (1987-11-01), Tsilibes
patent: 4720729 (1988-01-01), Watanabe

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