Exposure drum for a newspaper print-plate making apparatus
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United States of America Patent
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-
Apr 13, 1999
Grant Date -
N/A
app pub date -
Nov 10, 1997
filing date -
May 23, 1997
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An exposure drum (11) of a CTP newspaper plate-making apparatus has a width (W) which is slightly greater than a vertical measurement (L.sub.1) of one page of a newspaper, a circumference (L) which is slightly greater than a vertical measurement (L.sub.2) of two pages of newspaper, first and second plate-material engaging pins (13a, 13b) spaced from each other on the cylindrical surface of the exposure drum a distance (L.sub.5) which is equal to 1/2 of the circumference (L), second plate-material suction apertures (14a) in the cylindrical surface spaced from the first plate-material engaging pins a distance (L.sub.7) which is slightly smaller than a horizontal measurement (L.sub.4) of two pages of newspaper, first plate-material suction apertures (14a) in the cylindrical surface spaced from the first plate-material engaging pins a distance (L.sub.6) which is slightly smaller than the vertical measurement (L.sub.1) of one page of newspaper, and third plate-material suction apertures (14c) in the cylindrical surface spaced from the first plate-material engaging pins a distance (L.sub.8) which is slightly smaller than the vertical measurement (L.sub.2) of two pages of newspaper.
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Family
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Cited Art Landscape
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