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:
Sep. 17, 2013
Filed:
Aug. 26, 2011
Kengo Tsubaki, Miyagi, JP;
Kengo Tsubaki, Miyagi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A liquid discharge head unit includes a liquid container tank storing a liquid and a head discharging liquid droplets from its nozzles. The head includes a common channel supplying the liquid to liquid-chambers communicating with the nozzles, and the common channel includes a supply port introducing the liquid and a discharge port discharging the liquid. The liquid container tank includes a container including upstream and downstream chambers separated via a filtering member, a supply path supplying the liquid from the downstream chamber to the supply port of the head, a discharge path discharging the liquid obtained from the discharge port of the head, a communication path via which the downstream chamber communicates with the discharge path, and a communication path via which the upstream chamber communicates with the discharge path, where a fluid resistance of the second communication path is higher than that of the first communication path.