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:
Dec. 23, 2025
Filed:
Mar. 16, 2021
Ryohta Matsufuji, Kanagawa, JP;
Kiyoshi Amari, Kanagawa, JP;
Ryo Honda, Kanagawa, JP;
Keitaroh Sakai, Kanagawa, JP;
Ryohta Matsufuji, Kanagawa, JP;
Kiyoshi Amari, Kanagawa, JP;
Ryo Honda, Kanagawa, JP;
Keitaroh Sakai, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A discharge head includes a nozzle, a valve body, a piezoelectric element, and a first biasing unit. The nozzle is configured to discharge liquid. The valve body is configured to open and close the nozzle. The piezoelectric element is configured to drive the valve body. The first biasing unit is disposed in parallel with the piezoelectric element. The piezoelectric element is configured to drive the valve body in a direction to open the nozzle when a voltage is applied to the piezoelectric element. The first biasing unit is configured to bias the valve body in the direction to open the nozzle.