The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 08, 2005
Filed:
May. 22, 2001
Masakazu Okuda, Tokyo, JP;
Tomohiro Wada, Tokyo, JP;
Masakazu Okuda, Tokyo, JP;
Tomohiro Wada, Tokyo, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
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 t, and a second voltage changing process to expand the pressure generating chamber with a fall time of tafter the voltage is maintained during a time of t. 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 vand a second peak value vof particle velocity generated at the nozzle section satisfy the condition: 0.3≦v/v≦0.6.