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. 12, 2019
Filed:
Jul. 05, 2017
Toshiba Tec Kabushiki Kaisha, Tokyo, JP;
Ryutaro Kusunoki, Mishima Shizuoka, JP;
Shuhei Yokoyama, Mishima Shizuoka, JP;
Meng Fei Wong, Mishima Shizuoka, JP;
Toshiba TEC Kabushiki Kaisha, Tokyo, JP;
Abstract
An ink jet head includes a substrate having a pressure chamber formed therein, the pressure chamber being in communication with a nozzle through which ink is to be discharged, a first plate that is deformable to change a volume of the pressure chamber, and a second plate between the first plate and the pressure chamber, that stretches in response to an electric signal applied thereto. The second plate contracts in an in-plane direction to cause the first plate to deform and thereby the volume of the pressure chamber to be enlarged, when the electric signal is applied, and the second plate returns to an original shape thereof to cause the first plate to return to an original shape thereof and thereby the volume of the pressure chamber to return to an original volume thereof, when the electric signal is no longer applied.