Photocopying – Projection printing and copying cameras – Producing plural rows of pictures on photosensitive paper
Patent
1977-05-18
1978-08-08
Wintercorn, Richard A.
Photocopying
Projection printing and copying cameras
Producing plural rows of pictures on photosensitive paper
354 4, 354124, 355 72, G03B 2744
Patent
active
041053257
ABSTRACT:
An apparatus for use in making printing plates in which a sheet of photo-sensitive material is held by a hanger and moved horizontally and vertically. Successive areas are, in this manner, aligned with a projector and exposed to separate images, each image corresponding to one page of a book. Telescoping cylinders produce the desired movement of the sheet in discrete steps so the position of the sheet need not be manually adjusted for each image. In an embodiment that uses aperture cards containing micrographic images, the card holding portion of the projector is rotatable to invert the images as required.
REFERENCES:
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patent: 3639056 (1972-02-01), Gerson
patent: 3674367 (1972-07-01), Chapman
patent: 3837742 (1974-09-01), Wally, Jr.
patent: 3972610 (1976-08-01), Gross
patent: 3998546 (1976-12-01), Wally, Jr. et al.
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