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. 04, 2016
Filed:
Mar. 13, 2014
Konica Minolta, Inc., Chiyoda-ku, JP;
Kenji Mawatari, Chiyoda-ku, JP;
KONICA MINOLTA, INC., Tokyo, JP;
Abstract
A drive signal applied to a thin-film piezoelectric element includes the following: at least one discharge pulse that causes a drop of ink to be discharged from a pressure chamber; and a cancellation pulse. Said cancellation pulse has the same polarity as the discharge pulse(s) and serves to suppress reverberations of a pressure wave applied to the pressure chamber when the thin-film piezoelectric element is driven by the application of the discharge pulse(s). Letting Tc represent half of the natural vibration period of the pressure chamber, within the period within which a single pixel is placed, the cancellation pulse is applied once an amount of time equal to Tc times an even integer greater than or equal to 4 has passed since the end of the application of the first discharge pulse.