Vacuum registry exposure system and method

Details Vacuum registry exposure system and method Vacuum registry exposure system and method

1993-03-09

1995-04-25

Hayes, Monroe H.

Photocopying

Contact printing

Fluid pressure retention of carrier and receiver in exposure...

355 87, 355 94, G03B 2720

Patent

active

054103851

ABSTRACT:
The apparatus and method of the present invention uses a register light unit to facilitate manual alignment of master photographic images on a flexible carrier sheet. The carrier sheet and master images are positioned relative to a photosensitive screen using a vacuum contact plate that receives a screen frame in tight registration using a substantially planar surface for supporting the flexible carrier sheet with master images thereon. Vacuum is drawn around the screen to develop a pressure differential across the carrier sheet to urge the master images thereon into surface contact with the photosensitive screen during exposure to a source of illumination. Work stations include storage bins for prepared screens and master films to expedite processing through an exposure unit that includes a vacuum contact plate which is mounted to translate between a load/unload position outside of a housing and an exposure position inside of a housing that shields an operator from radiation from the source of illumination.

REFERENCES:
patent: 3644040 (1972-02-01), Beispel
patent: 4607953 (1986-08-01), Farris
patent: 4620787 (1986-11-01), Black et al.
patent: 4967230 (1990-10-01), Meacham
patent: 5017960 (1991-05-01), Tuulse
patent: 5255052 (1993-10-01), Ternes et al.

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