Laser radiation source
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United States of America Patent
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app pub date -
Jul 6, 2006
filing date -
Sep 8, 1998
priority date (Note) -
Abandoned
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Abstract
In a system or method for forming ink holding indicia at a processing surface of a printing form associated with a printing cylinder, a laser beam source is provided creating a laser beam. A rotatable mount rotates the cylinder. A modulator modulates the laser beam to control engraving of the ink holding indicia at the processing surface. Focusing optics focuses the laser beam to create a processing spot on the processing surface. Between the focusing optics and the processing surface a base member having an inner cavity through which said laser beam passes on its way to said processing surface, and at least one extraction channel which extracts unwanted material from said cavity.
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