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. 06, 2011
Filed:
Feb. 28, 2008
Kunihiro Miura, Atsugi, JP;
Kunihiro Miura, Atsugi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A liquid ejection head including a plurality of nozzles, a plurality of pressurizing liquid chambers, a liquid supply portion, and a filter portion. The plurality of nozzles ejects liquid droplets. The plurality of pressurizing liquid chambers are in fluid communication respectively with the nozzles. The liquid supply portion includes a plurality of individual supply channels and a fluid-communicating portion. The plurality of individual supply channels are in fluid communication respectively with the pressurizing liquid chambers to supply a liquid to the pressurizing liquid chambers. The fluid-communicating portion keeps the plurality of individual supply channels in fluid communication with one another. The filter portion is positioned to face the individual supply channels of the liquid supply portion and filters the liquid supplied to the pressurizing liquid chambers.