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. 22, 2016
Filed:
Oct. 22, 2013
Konica Minolta, Inc., Chiyoda-ku, Tokyo, JP;
Yuichi Machida, Hachioji, JP;
Kusunoki Higashino, Osaka, JP;
KONICA MINOLTA, INC., , JP;
Abstract
An inkjet head may include a nozzle hole; a pressure chamber; and a piezoelectric device disposed on the side opposite to the nozzle hole. A cross-sectional shape of the pressure chamber may include a circular-arc-shaped side wall portion and linear side wall portions connected with two ends of the circular-arc-shaped side wall portion on the side opposite to the supply side, the distance between the linear side wall portions gradually decreasing toward the side opposite to the supply side. The piezoelectric device may include a displacement portion that causes the pressure change inside the pressure chamber, and an electrode connection portion electrically connecting the piezoelectric device and an electrode. A cross-sectional shape of the displacement portion may include a circular-arc-shaped portion and has a smaller cross section than a corresponding cross section of the shape formed by the circular-arc-shaped side portion.