Incremental printing of symbolic information – Ink jet – Controller
Reexamination Certificate
2005-11-08
2005-11-08
Meier, Stephen (Department: 2853)
Incremental printing of symbolic information
Ink jet
Controller
Reexamination Certificate
active
06962398
ABSTRACT:
A method of driving an ink jet recording head, and an ink jet recording apparatus. A driving wave form for driving a piezoelectric actuator includes a first voltage changing process to compress a pressure generating chamber with a rise time of t1, and a second voltage changing process to expand the pressure generating chamber with a fall time of t3after the voltage is maintained during a time of t2. The start time, the voltage changing time, and the voltage variation of the second voltage changing process are set so that, in a room temperature environment, a first peak value v1and a second peak value v1of particle velocity generated at the nozzle section satisfy the condition: 0.3≦v2/v1≦0.6.
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Okuda Masakazu
Wada Tomohiro
Fuji 'Xerox Co., Ltd.
McGinn & Gibb PLLC
Meier Stephen
Mouttet Blaise
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