Photocopying – Projection printing and copying cameras – Focus or magnification control
Patent
1988-06-10
1989-11-28
Wintercorn, Richard A.
Photocopying
Projection printing and copying cameras
Focus or magnification control
G03B 2752
Patent
active
048840998
ABSTRACT:
A microfilm camera is capable of automatically selecting one of a plurality of different focal lengths available on a zoom lens to obtain the desired optical reduction ratio. A user operator enters, via a keyboard, the desired optical reduction ratio into the main or host computer resident in the microfilm camera. The computer through appropriate communication with a microcomputer atuomatically adjusts the lens to the appropriate lens focal length that corresponds to the selected optical reduction ratio and automatically establishes the film tansport speed that will be synchronized in the correct ratio to the document transport speed in accordance with the desired reduction ratio.
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Arndt Dennis R.
Eastman Kodak Company
Wintercorn Richard A.
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