Photocopying – Contact printing – Exposing on sensitized printing press plate or cylinder
Patent
1980-12-08
1982-04-20
Wintercorn, Richard A.
Photocopying
Contact printing
Exposing on sensitized printing press plate or cylinder
355 54, 355 71, 355 95, 355132, G03B 2704
Patent
active
043256325
ABSTRACT:
By providing a photographic original plate on which an original picture image and a light-shielding mask are formed, two identical pictures can be formed by exposing a sheet of photosensitive material with the original plate placed thereon and repeating the procedure after rotating the original plate 180 degrees about a point which is located outside of the picture image and the light-shielding mask. Though the two printed images are inverted relative to each other, the final prints are eventually cut apart along a central line and no problem arises. Through adoption of the method and the use of the novel photographic original plate, not only the printing process becomes simpler than conventional method but a better result in the final prints can be obtained.
REFERENCES:
patent: 3588248 (1968-05-01), Freund et al.
patent: 4225223 (1980-09-01), Papadakis
Ishigaki Masaya
Tsuji Kikuro
Dainippon Screen Seizo Kabushiki Kaisha
Kabushiki Kaisha Dai-ichi Shiko
Wintercorn Richard A.
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