Microrecord having mirror-images

Details Microrecord having mirror-images Microrecord having mirror-images

1976-03-22

1978-02-28

Griffin, Donald A.

Photocopying

Projection printing and copying cameras

With focusing or projection screen

353 27R, 355 27, G03B 1328, G03B 2732, G03B 2308

Patent

active

040764150

ABSTRACT:
A microfiche or other form of microfilm record having a main set of images thereon which may be selectively projected onto a viewing screen. In order to facilitate the making of reproductions of the recorded images without interposing a mirror between the sensitive film or the plate of the reproducer and the image projection system, the microfiche incorporates a companion set of images each being a reversed image of the corresponding image on the main set whereby when a reversed image is projected, it may be directly reproduced to produce a nonreversed, readable copy.

REFERENCES:
patent: 3733121 (1973-05-01), Smitzer
patent: 3820135 (1974-06-01), Dickson
patent: 3995956 (1976-12-01), Waly

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