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:
Jun. 25, 2024
Filed:
Oct. 25, 2022
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Taisuke Mizuno, Yokkaichi, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
A liquid discharge head is provided, including a channel unit and a piezoelectric actuator stacked on the channel unit. The channel includes a channel including a nozzle and a pressure chamber. The piezoelectric actuator includes a piezoelectric element which includes a piezoelectric layer; a constant electric potential electrode arranged between the piezoelectric layer and the channel unit; and a driving electrode arranged on a surface of the piezoelectric layer opposite to the constant electric potential electrode. A relational expression of 0.5107α+18.476<β<0.7326α+54.409 is fulfilled assuming that α represents a length in a transverse direction orthogonal to both of one direction and a stacking direction of the pressure chamber and β represents a length in the transverse direction of the driving electrode.