Image reversal process
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United States of America Patent
Stats
-
Jun 4, 1991
Grant Date -
N/A
app pub date -
Jun 10, 1989
filing date -
Jan 15, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A process for producing a reversed image proof from a negative film separation (66) including applying a uniform toner layer (60) to an offset member (46), exposing a charged surface (20) through the film separation (66) to produce unexposed non-image areas (68) and exposed image areas (70) thereon, contacting the offset member (46) to the charged surface (20) to transfer toner (74) from the offset member (46) to the surface (20) in the non-image areas (68), leaving an image residue (76) upon the offset member (46), and contacting the offset member (46) to a receptor (49) to transfer the image (76) thereto. The process may be repeated for subsequent colors to produce a positive multicolor image and may also be adapted to conventional proofers formerly capable of producing images from positive film separations only.
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Cited Art Landscape
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