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. 29, 2019
Filed:
Sep. 25, 2018
Applicant:
Seiko Epson Corporation, Tokyo, JP;
Inventor:
Ryota Furukawa, Nagano, JP;
Assignee:
Seiko Epson Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41J 2/045 (2006.01); B41J 2/14 (2006.01);
U.S. Cl.
CPC ...
B41J 2/04551 (2013.01); B41J 2/04515 (2013.01); B41J 2/04536 (2013.01); B41J 2/04541 (2013.01); B41J 2/04581 (2013.01); B41J 2/04593 (2013.01); B41J 2/04596 (2013.01); B41J 2/14233 (2013.01); B41J 2002/14241 (2013.01); B41J 2002/14362 (2013.01); B41J 2002/14419 (2013.01);
Abstract
A piezoelectric print head includes a piezoelectric element; a nozzle that ejects liquid when the piezoelectric element is driven; a transmission gate that switches between supply and non-supply of a driving signal for driving the piezoelectric element to the piezoelectric element; a history-information memory that holds history information indicating history of ON or OFF of the transmission gate; and a switch-operation stop controller that stops a switch operation that causes the transmission gate to be turned OFF from ON or to be turned ON from OFF, in accordance with the history information.