Drive signal adjustment method of liquid ejecting head and liquid ejecting apparatus
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United States of America Patent
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Mar 5, 2019
Grant Date -
Jan 25, 2018
app pub date -
Jul 10, 2017
filing date -
Jul 20, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A drive signal adjustment method adjusts a drive signal including a drive pulse to be supplied to a drive element of a liquid ejecting head. The liquid ejecting head includes a nozzle, a pressure generation chamber communicating with the nozzle, and the drive element generating a pressure change in a liquid inside the pressure generation chamber. The drive pulse includes an expansion element, an expansion maintenance element, a contraction element, a contraction maintenance element, and an expansion restoration element. A plurality of test patterns are printed by using adjusting drive pulses including modification values in which either one or both of a time of the contraction maintenance element and a period of the drive pulse are modified. The adjusting drive pulse corresponding to a specific test pattern selected from among the plurality of test patterns set as the drive pulse at the time of printing.
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