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:
Apr. 21, 2026
Filed:
Jul. 21, 2022
Screen Holdings Co., Ltd., Kyoto, JP;
Kyocera Corporation, Kyoto, JP;
Takanori Tsuji, Kyoto, JP;
Tomonori Yasuda, Kyoto, JP;
Shigeki Matsuo, Kyoto, JP;
Masaru Iwabuchi, Kyoto, JP;
SCREEN Holdings Co., Ltd., Kyoto, JP;
KYOCERA CORPORATION, Kyoto, JP;
Abstract
An inkjet head includes an ejector unit that ejects ink in accordance with a driving signal and a drive substrate unit that outputs the driving signal. The drive substrate unit includes a drive substrate that generates the driving signal, a case that holds the drive substrate, a cooling jacket, and a connection port connected to the cooling jacket. The cooling jacket is arranged between the drive substrate and the inner surface of the case and cools the drive substrate by passing a cooling medium therein. The connection port is formed in the side wall or the top plate of the case. At least part of the connection port is located in the vicinity of the top plate. This configuration achieves downsizing of the entire inkjet head including the ejector unit and the drive substrate unit including the drive substrate, and also suppresses propagation of high-temperature heat generated by the drive substrate to the ejector unit.