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:
Oct. 23, 2012
Filed:
Jun. 15, 2010
Takakazu Kihira, Kanagawa, JP;
Yukitoshi Tajima, Kanagawa, JP;
Takakazu Kihira, Kanagawa, JP;
Yukitoshi Tajima, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An inkjet printer head includes a nozzle plate having nozzles for jetting ink; a flow path plate having flow paths for communicating with the nozzles, each of the flow paths including a pressure chamber and a resistance part having a smaller cross-sectional area than the pressure chamber, wherein piezoelectric elements having smaller horizontal areas than the flow paths are laminated on the flow path plate; and a common liquid chamber configured to guide the ink from an opening to the pressure chamber. The common liquid chamber is formed by a first member and a second member. The first member forms a top part of the common liquid chamber, and the second member forms a side surface and a bottom surface of a bottom part of the common liquid chamber by adhering to an outer wall of the first member and to an ink jetting surface of the nozzle plate.