Photocopying – Including fiber optics
Patent
1975-12-23
1977-08-09
Griffin, Donald A.
Photocopying
Including fiber optics
355 51, 355 66, 355 77, G03B 2748, G03B 2750, G03B 2770, G03B 2732
Patent
active
040407330
ABSTRACT:
The exposure process and apparatus are for use with electrophotographic copying machines of the type in which a photosensitive surface is moved at a constant rate at any magnification selected. Upon changing from a magnification of unity to a magnification of .beta., a lens means arrangement which may be of any type, e.g., a customary lens, a variable focus lens, a lens of in-prism or in-mirror construction, is displaced, in a direction perpendicular to the optical axis thereof at unity magnification, by a distance which is determined in accordance with .beta. and another factor so that the same position for placement of an original to be copied on a holder such as a glass plate, can be maintained as the magnification is varied.
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Griffin Donald A.
Ricoh & Company, Ltd.
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