Photocopying – Contact printing – Light boxes
Patent
1979-11-29
1981-06-16
Griffin, Donald A.
Photocopying
Contact printing
Light boxes
355 64, G03B 940, G03B 2732
Patent
active
042734339
ABSTRACT:
A simply constructed two bladed shutter mechanism is provided for use in a photographic apparatus such as a microfiche camera having a scanning optical system for exposing a plurality of micro image areas on a single cardlike film unit. The camera lens is incrementally advanced to successive imaging positions by a rotatable barrel cam which also carries and rotates one or more shutter control pins for operating the shutter in coordination with advancement of the lens. In response to rotation of the one or more control pins with the barrel cam, shutter opening and closing blades are released sequentially from a cocked position for movement to effect exposure of an image area and thereafter are recocked.
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Griffin Donald A.
Polaroid Corporation
Vale John S.
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