Photocopying – Contact printing – Fluid pressure retention of carrier and receiver in exposure...
Patent
1999-03-11
2000-12-05
Mathews, Alan A.
Photocopying
Contact printing
Fluid pressure retention of carrier and receiver in exposure...
355 76, 355 94, G03B 2720
Patent
active
061574414
ABSTRACT:
Apparatus and method for supporting master image sheets on supporting platens includes forming vacuum seals between sheets and platens and evacuating air from therebetween to retain the master image sheets against movements on the supporting platens. An image receiving layer such as a photosensitive printed circuit board is disposed between supporting platens that are, then evacuated to retain the opposite surfaces of the layer in contact with the master image sheets for parallax-free photographic exposure to light through the platens, with inherent alignment of images thus formed on the opposite surfaces of the layer.
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Mathews Alan A.
Olec Corporation
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