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. 01, 2015
Filed:
Jan. 02, 2014
Ryohta Yoneta, Tokyo, JP;
Ryohta Yoneta, Tokyo, JP;
RICOH COMPANY, LTD., Tokyo, JP;
Abstract
A liquid ejection head includes a plurality of nozzles to eject liquid drops; a plurality of individual liquid chambers communicating with the plurality of nozzles; a plurality of liquid inlet portions leading to the plurality of individual liquid chambers; a common liquid chamber to supply liquid to the plurality of individual liquid chambers; and a plurality of filter portions disposed between the common liquid chamber and the liquid inlet portions, each of the filter portions including filter holes and filtering the liquid, wherein a plurality of reinforcement parts are provided to partition the plurality of filter portions, each of the reinforcement parts includes a part facing some of the filter holes of a corresponding one of the plurality of filter portions in a liquid flow direction, with a gap between the filter holes and the reinforcement part.