Method of exposing sensitized graphic art film and paper

Details Method of exposing sensitized graphic art film and paper Method of exposing sensitized graphic art film and paper

1991-05-28

1992-10-13

Hayes, Monroe H.

Photocopying

Contact printing

Methods

355 71, 355 91, G03B 2710

Patent

active

051555255

ABSTRACT:
A method of contact printing comprising the steps of supporting a film and an original in superposed relationship. A vacuum is progressively applied to the superposed film and original from a first edge to an opposite edge thereof to hold them in substantially intimate contact while simultaneously moving a source of collimated light over the surface of the superposed film and original and exposing the film through the cover sheet and the original.

REFERENCES:
patent: T903018 (1972-10-01), Dexter
patent: 2988979 (1961-06-01), Sigler
patent: 3007390 (1961-11-01), Forester et al.
patent: 3200730 (1965-08-01), Heier
patent: 3385192 (1968-05-01), Qwarfort
patent: 4029404 (1977-06-01), Mizukami et al.
patent: 4466737 (1984-08-01), Hastings
patent: 4707116 (1987-11-01), Newiger et al.

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