Exposure drum mask
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United States of America Patent
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-
Sep 7, 1993
Grant Date -
N/A
app pub date -
Jun 16, 1992
filing date -
Jun 16, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A mask is used for mounting a sensitized sheet, such as a printing plate, onto the surface of an exposure drum. The mask, acting as an intermediary between the exposure drum and the printing plate, is a flexible sheet, with a top and bottom surface, that is mounted about the exposure drum. A groove formed within the top surface of the flexible sheet is used for securing the printing plate by means of a vacuum. A passageway formed within the flexible sheet connects the groove to the bottom surface and receives a vacuum from the exposure drum. Plates of different sizes are mounted to the exposure drum by interchangeable masks of corresponding sizes.
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