Alignment of imprints
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United States of America Patent
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-
Jun 25, 2002
Grant Date -
N/A
app pub date -
Jan 28, 2000
filing date -
Jan 29, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A method of controlling operation of a print head to align imprints printed by the print head in two traverses in opposite directions is disclosed. The print head includes a row of printing elements that are operated selectively in a plurality of print cycles to print each imprint. Upon completion of printing a first imprint, signals corresponding to motion of the print head step the count of a counter. The stepping of the counter is terminated when the print head passes a reference position. During a reverse traverse of the print head, stepping of the counter is initiated when the print passes the reference position and operation of the print head to print a second imprint is initiated when the count reaches a predetermined count.
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