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:
Aug. 31, 2010
Filed:
May. 26, 2006
Hiroto Sugahara, Aichi-ken, JP;
Hiroyuki Ishikawa, Nisshin, JP;
Hiroto Sugahara, Aichi-ken, JP;
Hiroyuki Ishikawa, Nisshin, JP;
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Abstract
An ink-jet head includes a channel unit in which two sets of a manifold and five pressure chambers adjacent to the manifold are formed, a vibration plate which is provided on an upper surface of the channel unit, a piezoelectric layer which is provided on an upper surface of the vibration plate, and a piezoelectric actuator which includes individual electrodes provided on an upper surface of the piezoelectric layer, corresponding to the pressure chambers. The vibration plate is arranged such that the vibration plate covers 10 pressure chambers and two manifolds, and on a lower surface of the vibration plate, in an area overlapping with the two manifolds, a recess having a cross-sectional shape of a taper is formed. Due to the recess, a pressure wave which is propagated to the manifold can be attenuated assuredly.