Printing apparatus and method of detecting registration deviation
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United States of America Patent
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-
May 21, 2002
Grant Date -
N/A
app pub date -
Jul 20, 1999
filing date -
Jul 21, 1998
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
According to the position information, based on the encoder signal, about the print heads during movement which is obtained in connection with the print start timing of the signal used by the print heads to print the registration adjust patterns, the amount of registration deviation between the print heads are determined. Then, the differences between the print start time of the signal and the leading and trailing edge of the encoder signal are determined for each print head. The difference between these differences is adjusted as the deviation amount between the heads to adjust the ejection timing of each head. This can correct the print position deviations between the plurality of the heads with high precision without being influenced by variations in the head movement speed.
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