Liquid ejecting apparatus and method of driving liquid...

Details Liquid ejecting apparatus and method of driving liquid... Liquid ejecting apparatus and method of driving liquid...

2011-05-03

2011-05-03

Luu, Matthew (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

C347S010000, C347S009000, C347S005000

Reexamination Certificate

active

07934786

ABSTRACT:
A liquid ejecting apparatus includes a liquid ejecting head including pressure generation chambers communicating with nozzle openings for ejecting a liquid and pressure generation units which cause pressure variations in the pressure generation chambers. A driving unit supplies, to the pressure generation units, a driving signal including an expansion element for expanding the pressure generation chambers. A contraction element contracts the pressure generation chambers and a re-expansion element expands the pressure generation chambers before the liquid is ejected from the nozzle openings by the contraction element. The re-expansion element includes a primary expansion element at the contraction element side that expands the pressure generation chambers. A secondary expansion element has at least a variation portion having a voltage variation ratio different from a voltage variation ratio of the primary expansion element in continuation to the primary expansion element and expands the pressure generation chambers.

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patent: 2006-306076 (2006-11-01), None

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