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:
Oct. 02, 2012
Filed:
Aug. 31, 2010
Ryuji Tsukamoto, Kanagawa-ken, JP;
Ryuji Tsukamoto, Kanagawa-ken, JP;
FUJIFILM Corporation, Tokyo, JP;
Abstract
A method for driving an inkjet head includes applying drive signals including an ejection signal used for ejecting ink and a non-ejection signal used for not ejecting the ink, to an actuator provided with a pressure chamber at a constant cycle so as to increase or reduce pressure in the pressure chamber in such a manner that the ink is ejected or not ejected from a nozzle connected with the pressure chamber, wherein: a waveform of the ejection signal includes a combination of an ejection pulse for causing a droplet of the ink to be ejected from the nozzle and a non-ejection pulse for not causing a droplet of the ink to be ejected from the nozzle, the ejection pulse of the waveform of the ejection signal includes a part for reducing the pressure in the pressure chamber and a part for increasing the reduced pressure in the pressure chamber.