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:
Dec. 01, 2015
Filed:
Jan. 21, 2015
Brother Kogyo Kabushiki Kaisha, Nagoya-shi, Aichi-ken, JP;
Yoshihumi Suzuki, Ena, JP;
Brother Kogyo Kabushiki Kaisha, Aichi-ken, JP;
Abstract
There is provided a liquid discharge apparatus including a channel structure in which liquid channels including pressure chambers and nozzles are formed and a piezoelectric actuator including a piezoelectric layer arranged on the channel structure to cover the pressure chambers. Two grooves are formed in the piezoelectric layer to locate on two sides of each pressure chamber in an array direction. There is an equal separation distance between the two grooves arranged on the two sides of the pressure chamber. X means positions of the grooves from an edge of the pressure chamber in the array direction, and Xc means an center position between the edge of the pressure chamber to the edge of an adjacent other pressure chamber in the array direction. The positions X of the grooves satisfy 0.2Xc−20 μm≦X≦0.6Xc+20 μm.