Photocopying – Including fiber optics
Patent
1977-05-20
1978-11-14
Wintercorn, Richard A.
Photocopying
Including fiber optics
355 60, 355 71, G03G 1500, G03B 2770
Patent
active
041253230
ABSTRACT:
The electrophotographic copying machine of the present disclosure includes a slit mechanism having two different forms of slits, an optical device to project the image of the original to be copied onto a photoreceptor surface a shifting mechanism for shifting the optical device between a first position suitable for performing an equal size copying operation and a second position suitable for performing a different size copying operation, such as a reduced size copying operation. During the equal size copying operation, the slit mechanism provides a slit having a large size, while during the other size copying operation, for example, a reduced size copying operation, the slit mechanism provides a slit having a different size, for example a small size, so as to maintain the distribution of the amount of exposure on the photoreceptor surface in a predetermined distribution regardless of the type of copying operation.
REFERENCES:
patent: 3731611 (1973-05-01), Aasen et al.
patent: 3771867 (1973-11-01), Moser
patent: 3914046 (1975-10-01), Tanaka et al.
patent: 3917393 (1975-11-01), Nier
patent: 3967895 (1976-07-01), Crook
Doi Yasuhiko
Hayashi Masamichi
Ikeda Hiroshi
Minolta Camera Kabushiki Kaisha
Wintercorn Richard A.
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