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:
Jul. 09, 2019
Filed:
Sep. 29, 2017
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Kyohei Naito, Nagoya, JP;
BROTHER KOGYO KABUSHIKI KAISHA, Nagoya-Shi, Aichi-Ken, JP;
Abstract
A liquid jetting apparatus includes: a channel substrate having a pressure chamber which is long in a first direction; an insulating film provided on the channel substrate to cover the pressure chamber; a piezoelectric film overlapping with the insulating film and having first and second portions, the first portion overlapping with a central portion of the pressure chamber in the first direction, the second portion extending from the first portion in the first direction beyond the pressure chamber, the first portion having a width in a second direction which is smaller than a width of the pressure chamber in the second direction; a first electrode arranged between the insulating film and the piezoelectric film; and a second electrode facing the first electrode with the piezoelectric film being sandwiched therebetween. The insulating film has a thin-walled portion formed at a portion overlapping with the second portion of the piezoelectric film.