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. 28, 2020
Filed:
Mar. 19, 2019
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Keiji Kura, Chita, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Abstract
A liquid discharge head includes: a channel unit having a discharge surface that is parallel to a first direction and a second direction orthogonal to the first direction, and a pressure chamber; and a piezoelectric actuator stacked on the channel unit in a third direction perpendicular to the discharge surface. The piezoelectric actuator includes: a piezoelectric body having piezoelectric layers stacked in the third direction; a first electrode; and second and third electrodes separated from the first electrode in the third direction. The piezoelectric body has a first portion that is interposed in the third direction between the first and second electrodes and that at least partially overlaps in the third direction with the pressure chamber; a second portion that is interposed in the third direction between the first and third electrodes; and a third portion that is interposed in the third direction between the first and third electrodes.