Photocopying – Contact printing – Methods
Patent
1981-02-26
1983-05-31
Wintercorn, Richard A.
Photocopying
Contact printing
Methods
355 32, 355 88, G03B 2702
Patent
active
043858287
ABSTRACT:
The method disclosed enables one to transfer an image from a translucent material to a photosensitized material. Initially a translucent material which includes an image is placed between an unexposed sensitized material, such as a film negative, and a source of light. The source of light is energized for a predetermined time interval to pass light through the translucent material onto the negative to transfer the image from the translucent material to the film negative. The film negative can then be used to expose a printing press plate, such as a lithographic plate. The method can be used to transfer either black and white or color line work, pre-screened image material and either black and white or color image material to one or more film negatives or sheets of sensitized material.
REFERENCES:
patent: 3801198 (1974-04-01), David
patent: 3873202 (1975-03-01), Inoue
patent: 3914721 (1975-10-01), Pollock
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