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:
Apr. 04, 2017
Filed:
Jun. 24, 2016
Seiko Epson Corporation, Tokyo, JP;
Shushi Makita, Shiojiri, JP;
Noriaki Yamashita, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A liquid discharge apparatus includes a filter configured to filter liquid to be discharged from a nozzle, a vibration detection mechanism configured to detect vibration of ink in an ink flow path generated by the driving of a piezoelectric element as an actuator; and a calculation circuit configured to obtain a detection value obtained by the vibration detection mechanism and perform calculation by using the detection value, wherein the vibration detection mechanism detects vibration of n (1<n≦m) nozzles out of m nozzles included in the recording head, and the calculation circuit determines a state of the filter on the basis of a result of the calculation performed by using the detection value obtained by the vibration detection mechanism.