Invention Grant
US08376492B2 Liquid ejecting apparatus and controlling method of the same 有权
液体喷射装置及其控制方法

Liquid ejecting apparatus and controlling method of the same
Abstract:
A liquid ejecting apparatus includes: a liquid ejecting head which includes a pressure generating chamber communicating with a nozzle opening and a pressure generating element causing variation in a pressure of a liquid in the pressure generating chamber and which ejects the liquid from the nozzle opening by an operation of the pressure generating element; and a driving signal generating unit which generates a series of driving signals containing a driving pulse used to drive the pressure generating element. The driving pulse generated by the driving signal generating unit contains a plurality of expansion components expanding the pressure generating chamber and drawing a meniscus and an ejection component varying a voltage so as to contract the expanded pressure generating chamber and ejecting a liquid droplet. The expansion component includes a first expansion component and a second expansion component drawing the meniscus at a voltage variation ratio different from that of the first expansion component.
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