Photocopying – Including fiber optics
Patent
1977-03-09
1978-11-21
Braun, Fred L.
Photocopying
Including fiber optics
355 3R, 355 67, G03B 2700, G03G 1500, G03B 2754
Patent
active
041263880
ABSTRACT:
An electrophotocopying machine of the electrostatic latent image transfer type employing as a device for projection of images of original documents onto a photosensitive drum an optical fiber device which has a short focal length and permits efficient exposure of a narrow area of the photosensitive drum whereby the drum diameter can be small and machine height may be reduced. The electrophotocopying machine also occupies less area and makes efficient use of electrical power because use is made of a portion of a charging unit area to transmit image light to the photosensitive drum and use is also made of light from the document illumination device to erase the charge on the drum.
REFERENCES:
patent: 3643014 (1972-02-01), Rosenberg et al.
patent: 3730709 (1973-05-01), Kinoshita et al.
patent: 3778148 (1973-12-01), Fijitsuka et al.
patent: 3955888 (1976-05-01), Kakiuchi et al.
patent: 3997262 (1976-12-01), Doi et al.
patent: 4050802 (1977-09-01), Tanaka et al.
Braun Fred L.
Minolta Camera Kabushiki Kaisha
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