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. 28, 2026
Filed:
Mar. 29, 2024
Chikako Hatta, Kanagawa, JP;
Kohta Akiyama, Kanagawa, JP;
Chikako Hatta, Kanagawa, JP;
Kohta Akiyama, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A liquid discharge head includes a nozzle plate and a channel substrate. The nozzle plate has a nozzle from which a liquid is dischargeable in a first direction. The channel substrate is laminated over the nozzle plate. The channel substrate has a pressure chamber, an individual supply chamber having a first height h1, and a fluid restrictor. The liquid flows from the individual supply chamber to the pressure chamber through the fluid restrictor in a second direction. The fluid restrictor has a width narrower than each of a width of the pressure chamber and a width of the individual supply chamber in a third direction, and a second height h2 smaller than the first height h1 in the first direction. The first height h1 of the individual supply chamber and the second height h2 of the fluid restrictor satisfy 0.3≤h2/h1≤0.6.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile