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:
Dec. 16, 2008
Filed:
Sep. 03, 2004
Iwao Ushinohama, Kanagawa, JP;
Yuichiro Ikemoto, Kanagawa, JP;
Kazuyasu Takenaka, Tokyo, JP;
Takeo Eguchi, Kanagawa, JP;
Iwao Ushinohama, Kanagawa, JP;
Yuichiro Ikemoto, Kanagawa, JP;
Kazuyasu Takenaka, Tokyo, JP;
Takeo Eguchi, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
The present invention is directed to a liquid discharge apparatus adapted for discharging inks from discharge holes, which includes a control unit for controlling a discharge control unit, wherein the control unit controls the discharge control unit in such a manner that pulse current delivered to one of a pair of heating resistors is caused to be reference, and pulse current is delivered to the other heating resistor in the state where timing is shifted in a time of the range within 20% of supply time of pulse current serving as reference with respect to supply timing of pulse current serving as reference. Thus, it is possible to suppress unevenness or variation of impact positions of ink droplets discharged in the state where discharge direction has been changed. As a result, deterioration of picture quality resulting from color tone unevenness and/or white stripe, etc. is prevented. Thus, print operation can be performed at excellent picture quality.