Photocopying – Projection printing and copying cameras – With focusing or projection screen
Patent
1985-12-09
1987-03-10
Wintercorn, Richard A.
Photocopying
Projection printing and copying cameras
With focusing or projection screen
355 5, 355 43, 355 60, 355 77, G03B 1328, G03B 2732
Patent
active
046487077
ABSTRACT:
A readout system includes a source of illumination that is propagated along a predetermined path. Disposed in that path is a medium, such as a microform which carries a chart recording. An imaging screen is located in a portion of that path beyond the medium, and a projection lens system is adjustable to focus the image upon the screen. Also included is an image storage element disposed in a portion of the path of the illumination beyond the medium. The medium is moved along a given path which results in the sweeping of the image across the screen and also in the presenting of a moving section of the image in a discrete path to the storage element. The storage element in this case is the electrostatic drum of a xerographic copying machine. The length of the path is adjusted by means of interposing first and second reflectors mutually inclined at a reverse angle of forty-five degrees. Adjustment of the distance between those mirrors changes the path length. The outcome of the use of this system is the capability of adjusting the size of the stored image in order to ensure that it constitutes a faithful reproduction of that which is intended when ultimately printed in hard copy.
REFERENCES:
patent: 3094036 (1963-06-01), Benson
patent: 3115815 (1963-12-01), Friedel
patent: 3988064 (1976-10-01), Sone et al.
Drake Hugh H.
Petro Fax, Inc.
Wintercorn Richard A.
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