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:
Jul. 15, 2025
Filed:
Feb. 08, 2023
Seiko Epson Corporation, Tokyo, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A piezoelectric body that is driven to apply pressure to a liquid in the plurality of pressure chambers, and contains lead atoms, a first electrode that is provided on a first surface of two surfaces of the piezoelectric body, a second electrode that is provided on a second surface opposite to the first surface of the two surfaces of the piezoelectric body, a drive wiring that is electrically coupled to the first electrode and the second electrode, and applies a voltage for driving the piezoelectric body, a resistor that is formed of the same material as any of the first electrode, the second electrode, and the drive wiring to measure a temperature of the liquid in the plurality of pressure chambers, and a diffusion suppression layer that is provided between the resistor and the piezoelectric body to suppress diffusion of lead atoms contained in the piezoelectric body into the resistor.