Method and apparatus for printing
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United States of America Patent
Stats
-
Feb 18, 2003
Grant Date -
Aug 9, 2001
app pub date -
Dec 26, 1996
filing date -
Dec 28, 1995
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A printing method which can complement an image defect caused by ejection failure and thus to obtain high definition image even when failure, such as faulty ejection or non-ejection failure, is caused in any of ejection mechanism as a plurality of printing elements of a printing head. The printing method includes step of detecting faulty nozzle of the printing head, step of performing printing excluding the faulty nozzle during primary scanning, step subsequently of providing a shift for the printing head in an auxiliary scanning direction at least a pitch between the nozzles, step of performing complemental printing with other normal nozzle for a printing region corresponding to the faulty nozzle which could not be printed in the printing step, and step of eliminating shift of the printing head in the auxiliary scanning direction.
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Cited Art Landscape
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