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:
Aug. 25, 2026
Filed:
Dec. 15, 2023
Hisayoshi Ohshima, Kanagawa, JP;
Hisayoshi Ohshima, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A liquid discharge head includes: a nozzle hole from which a liquid is dischargeable in a discharge direction; a liquid chamber in communication with the nozzle hole; a needle valve movable in the discharge direction to be separatable from or contactable with the nozzle hole to open or close the nozzle hole; a driver to move the needle valve in the discharge direction; a housing having: the liquid chamber; and a housing chamber housing the needle valve and the driver; and a sheet member having a shape of a sheet and a flexibility to deform in the discharge direction, the sheet member including: an inner circumference fitted to an outer circumference of the needle valve; and a rim secured to the housing.