Bidirectional printing using two nozzle group sets arranged in reverse order
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United States of America Patent
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Jan 25, 2005
Grant Date -
Oct 21, 2004
app pub date -
Jul 1, 2003
filing date -
Jul 4, 2002
priority date (Note) -
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status (Latency Note)
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Abstract
A technology that reduces color unevenness due to conspicuous areas for which ink is discharged in different ink discharge sequences is provided. First and second nozzle group sets each discharges multiple ink colors including black ink are used, wherein the ink discharge sequence followed by the first nozzle group set for a given pixel during one pass of forward path main scanning is the opposite of the ink discharge sequence followed by the second nozzle group set for a given pixel during the same pass of forward path main scanning, and bidirectional printing is carried out using both the first and second nozzle group sets during both forward path main scanning and reverse path main scanning.
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