Correcting in-track errors in a linear printhead
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United States of America Patent
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Aug 31, 2021
Grant Date -
Mar 11, 2021
app pub date -
Sep 9, 2019
filing date -
Sep 9, 2019
priority date (Note) -
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status (Latency Note)
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Abstract
A method for correcting in-track position errors in a digital printing system having a linear printhead includes printing a test target including a plurality of alignment marks. A data processing system is used to automatically analyze a captured image of the printed test target to determine a measured in-track position for each of the alignment marks. The measured in-track positions for the alignment marks are compared to reference positions to determine measured in-track position errors. An in-track position correction function is determined responsive to the measured in-track position errors, wherein the in-track position correction function specifies in-track position corrections to be applied as a function of cross-track position. A corrected digital image is determined by resampling an input digital image responsive to the in-track position correction function.
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