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:
Mar. 25, 2014
Filed:
Feb. 19, 2013
Hideaki Nishimura, Kanagawa, JP;
Yukitoshi Tajima, Kanagawa, JP;
Hideaki Nishimura, Kanagawa, JP;
Yukitoshi Tajima, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An inkjet head includes an actuator substrate provided with a pressure generating chamber, a nozzle plate provided with multiple nozzle holes discharging liquid to form a nozzle surface opposite to a recording media, a common passage substrate provided with a common passage to supply liquid to the pressure generating chamber, and a cover member to cover a perimeter of the nozzle surface, with an opening to expose the nozzle holes. In a prescribed direction, a dimension of the opening of the cover Lc, an external dimension of the actuator substrate La, an external dimension of the nozzle plate Ln, and an external dimension of the common passage substrate Lm, satisfy inequalities, La≦Lc<Ln≦Lm. A supporting member is provided between the opposing surface of the nozzle surface and the surface of the common passage substrate facing to the nozzle plate, to support the nozzle plate.