Method for making and evaluating a sample cut
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United States of America Patent
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Sep 27, 2005
Grant Date -
N/A
app pub date -
May 27, 1998
filing date -
Jun 2, 1997
priority date (Note) -
Expired
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Abstract
In a method for making and evaluating a sample cut in an engraving machine, an engraving control signal for guiding a stylus is formed from engraving data. The stylus cuts a series of cups. During a trial engraving trial cups are engraved and a video image is made. In accordance with screen parameters, measuring points are fixed in the video image as distances to a selected reference point. Geometric parameters of the trail cups are measured in the video image and are compared to corresponding geometric parameters of the cups representing predetermined tone values. Adjustment values are deduced from this comparison which are used to calibrate the engraving control signal.
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