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:
Feb. 21, 2012
Filed:
Oct. 09, 2007
Hideo Watanabe, Tokyo, JP;
Hideo Watanabe, Tokyo, JP;
Abstract
A flow path regulating memberis formed on the rear surface of the head chipA, wherein the channelsand, and drive wallsmade up of piezoelectric elements are arranged alternately, the apertures of the channelsandare arranged on the front side and rear side, and drive electrodesare formed in channelsand, by the step of providing a lamination film according to the process wherein a mask layer without having been etched at the time of dry etching of an organic film is patterned on the surface of the organic film so as to conform to the channelfor regulating an ink flow path and performing dry etching from the side of the mask layer and removing the organic film at other than the site coated with the mask layer.