Method for correcting skewed recording when exposing printing originals
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United States of America Patent
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-
Feb 12, 2008
Grant Date -
May 5, 2005
app pub date -
Oct 8, 2004
filing date -
Nov 4, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for correcting the skewed recording of a printing original on a recording material in an exposer includes the steps of projecting, with an exposure head, a linear array of exposure points generated by N laser beams onto the recording material and moving the exposure head continuously along an exposure drum in axial feeding direction as the exposure drum rotates. As a result, the printing original is recorded along a helix wound around the exposure drum. The laser beams are modulated with image data that is taken from a stored image point matrix along an angled read path, the read path running through the image point matrix at an angle formed by the helix with respect to a circumferential line of the exposure drum.
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