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. 29, 2020
Filed:
Dec. 27, 2019
Seiko Epson Corporation, Tokyo, JP;
Kinya Ozawa, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A liquid droplet ejecting apparatus includes a nozzle; a flow-path-section having a first pressure-chamber, a communication-path enabling the nozzle to communicate with the first pressure-chamber, and a second pressure-chamber communicating with the first pressure-chamber through the communication-path; a first signal-generator that generates a first driving signal to drive a first piezoelectric-element; a second signal-generator that generates a second driving signal to drive a second piezoelectric-element; and an inspector that inspects ejection from the nozzle based on electromotive force generated by the first piezoelectric-element due to residual vibration that has occurred in the flow-path-section due to the driving of the first piezoelectric-element. The first driving signal includes a first inspection waveform. The second driving signal includes a second inspection waveform having a polarity opposite to the first inspection waveform for a time period overlapping a first formation time period for the first inspection waveform.