Photocopying – Contact printing – Light boxes
Patent
1988-11-04
1989-12-26
Moses, R. L.
Photocopying
Contact printing
Light boxes
355244, 355326, G03G 2100
Patent
active
048901393
ABSTRACT:
An image forming apparatus capable of producing both a normal image and a reversal image, is provided with a photosensitive member, a charger for charging the photosensitive member, an optical system for forming an electrostatic latent image on the photosensitive member, a first developing device for developing the electrostatic latent image using black toner, a second developing device for developing the electrostatic latent image using white toner, a white paper supply cassette for supplying a white paper into a transfer region confronting the photosensitive member, a black paper supply cassette for supplying a black paper into the transfer region, and a control system including a microcomputer for controlling the developing devices and the paper supply cassettes to form a black toner image on the white paper or a white toner image on the black paper.
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patent: 3992089 (1976-11-01), Hirose et al.
patent: 4579443 (1986-04-01), Abuyama et al.
patent: 4582417 (1986-04-01), Yagasaki et al.
patent: 4659211 (1987-04-01), Oka
patent: 4678314 (1987-07-01), Uchida et al.
patent: 4769675 (1988-09-01), Watanabe
patent: 4789878 (1988-12-01), Endo et al.
patent: 4806974 (1989-02-01), Shimazaki
Minolta Camera Kabushiki Kaisha
Moses R. L.
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