Printing apparatus and printing method
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United States of America Patent
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Jun 18, 2013
Grant Date -
Mar 3, 2011
app pub date -
Aug 6, 2010
filing date -
Aug 28, 2009
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In a printing apparatus and a printing method, the frequency of an operation of detecting an inappropriate ejection state of each ejection port is increased, while allowing a decrease in throughput to be suppressed. The printing apparatus includes a first ejection state sensing unit for carrying out an ejection state sensing process in which determination of whether or not ejected droplets are normal is executed, during a single process, on all the ejection ports formed in the print head. The printing apparatus further includes a second ejection state sensing unit for carrying out the ejection state sensing process on the ejection ports in a part of a plurality of ejection port groups into which the plurality of ejection ports formed in the print head are divided.
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