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:
Mar. 01, 2022
Filed:
Jun. 18, 2020
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Keita Hirai, Nagoya, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya, JP;
Abstract
A liquid discharge head includes: a first substrate including a pressure chamber; and a second substrate. The first substrate has a first surface in which a nozzle communicating with the pressure chamber is opened and a second surface positioned at an opposite side of the first surface and in which a communication hole communicating with the pressure chamber is opened. The second substrate is joined to the second surface of the first substrate and has a channel communicating with the pressure chamber via the communication hole. The pressure chamber has a first end in a first direction and a center portion in the first direction. The communication hole communicates with the first end of the pressure chamber, and the first end of the pressure chamber is greater than the center portion of the pressure chamber in length in a second direction which intersects with the first direction.