MULTI-PRINT HEAD PRINTER FOR DETECTING ALIGNMENT ERRORS AND ALIGNING IMAGE DATA REDUCING SWATH BOUNDARIES
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United States of America Patent
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Sep 23, 2014
Grant Date -
Sep 25, 2014
app pub date -
Mar 25, 2013
filing date -
Mar 25, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A multi-printhead printing system, including first and second printheads adapted to print on a receiver medium. An alignment process includes printing a test pattern including features separated by predefined test pattern feature separations, where some features are printed with a first printhead and some features printed with a second printhead. An image of the printed test pattern is analyzed to determine a first camera pixel separation between two features printed with the first printhead, which is used to determine a camera scale factor. The camera scale factor is used to scale a second camera pixel separation between a feature printed with first printhead and a feature printed with the second printhead. The scaled second camera pixel separation is compared to a corresponding test pattern feature separation to determine an alignment error, which is used to adjust the alignment of the image data printed with at least one of the printheads.
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