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. 05, 2022
Filed:
Nov. 13, 2020
Ricoh Company, Ltd., Tokyo, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A liquid discharge head includes a nozzle configured to discharge a liquid, a pressure chamber communicating with the nozzle, a pressure generator configured to apply pressure on the pressure chamber, a first substrate including a terminal electrode connected to the pressure generator, and a second substrate including a bonding surface bonded to the first substrate, the second substrate including a terminal opening exposing the terminal electrode of the first substrate. The first substrate includes a through hole penetrating through the first substrate, and the second substrate includes a communication hole communicating with the through hole of the first substrate and an air communication channel on a surface opposite to the bonding surface, the air communication channel communicating with the terminal opening and the communicating hole.