Photocopying – Contact printing – Light boxes
Patent
1987-12-22
1990-03-06
Prescott, A. C.
Photocopying
Contact printing
Light boxes
355319, 355218, G03G 1500
Patent
active
049070339
ABSTRACT:
The copying apparatus of the present invention comprises an exposure station for exposing an original to light; automatic document feeder for positioning the first surface of the original and turning the original upside down after an exposure; a photosensitive drum; a charger for sensitizing the photosensitive drum; an optical system for projecting the image of the original onto the sensitized photosensitive drum, an erasing unit for irradiating the sensitized photosensitive member with an erasing light and a controller for controlling the erasing unit to erase the images corresponding to binding margins of the first and second surfaces of the original.
REFERENCES:
patent: 4187024 (1980-02-01), Satomi et al.
patent: 4582417 (1986-04-01), Yagasaki et al.
patent: 4611908 (1986-09-01), Buch
patent: 4653899 (1987-03-01), Watanabe
patent: 4674864 (1987-06-01), Stakenborg et al.
patent: 4674866 (1987-06-01), Tanaka
patent: 4699365 (1987-10-01), Smith et al.
patent: 4733266 (1988-03-01), Watanabe
patent: 4752809 (1988-06-01), Ito
Ito Masazumi
Maruta Syuzi
Minolta Camera Kabushiki Kaisha
Prescott A. C.
Shapiro Barry
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