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. 15, 2025
Filed:
Mar. 15, 2023
Tomoko Kurosawa, Kanagawa, JP;
Eiri Sagae, Kanagawa, JP;
Makito Nakashima, Kanagawa, JP;
Riku Maeshiro, Kanagawa, JP;
Tomoko Kurosawa, Kanagawa, JP;
Eiri Sagae, Kanagawa, JP;
Makito Nakashima, Kanagawa, JP;
Riku Maeshiro, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A liquid discharge head includes a nozzle plate having a discharge port, and a valve facing the nozzle plate to open and close the discharge port. The valve includes a core having a recess, and an elastic member attached to the core. The recess has: an opening rim on a leading end of the core, the opening rim defining an opening of the recess opening toward the discharge port; a bottom face opposite to the opening rim; and a retaining portion having a width wider than a width of a portion other than the retaining portion of the recess in a width direction, the retaining portion disposed in a rear region between the bottom face and a center of the recess. The elastic member includes a first portion fitted into the recess and a second portion projecting from the opening of the recess toward the discharge port.