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. 21, 2026
Filed:
Oct. 24, 2023
Daisuke Arai, Tokyo, JP;
Takahiko Matsumoto, Kanagawa, JP;
Yusuke Nonoyama, Kanagawa, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A liquid droplet forming device for stably forming and ejecting a liquid droplet of a dispersion liquid containing settling particles includes an ejection head that ejects a liquid droplet of a liquid containing settling particles, and a control unit. The control unit controls a behavior of the ejection head by supplying an electrical signal. The ejection head includes a liquid holding portion that holds the liquid, a film-like member that has an ejection hole for ejecting the liquid droplet and that forms a liquid chamber, which holds the liquid, together with the liquid holding portion, and vibration applying means for vibrating the film-like member based on the electrical signal. The electrical signal includes an ejection signal for forming the liquid droplet by vibrating the film-like member, a stirring signal for vibrating the film-like member and a micro-vibration signal.