Printing apparatus and control method thereof
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United States of America Patent
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Sep 22, 2015
Grant Date -
Dec 19, 2013
app pub date -
Jun 7, 2013
filing date -
Jun 18, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
One aspect of this invention is directed to suitable drive control in accordance with an output from the temperature sensor of a printhead. More specifically, a printing apparatus by using a printhead that includes heaters and a temperature sensor on a substrate and discharges ink by driving the heaters executes the following steps. First, when printing a test pattern by using a predetermined driving pulse in a maintenance mode, a detected temperature is stored as a reference temperature in a memory. Then, in a normal printing mode, the difference between a detected temperature and the stored reference temperature is calculated, and a driving pulse for driving the printhead is selected from a plurality of driving pulses based on the difference. The printhead is controlled to be driven using the selected driving pulse and print.
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