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:
Feb. 23, 2021
Filed:
Jul. 15, 2019
Seiko Epson Corporation, Tokyo, JP;
Yoichiro Kondo, Nagano, JP;
Fumiya Takino, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A head unit has: a first member in which a pressure chamber that stores a liquid to be discharged from a nozzle is formed; a piezoelectric element disposed on the first member and configured to deform in response to a driving signal; a first substrate disposed on the first member so as to cover the piezoelectric element; an integrated circuit disposed on the first substrate, and configured to supply the driving signal to the piezoelectric element; a second member disposed on the first member, and the second member including a holding chamber configured to hold the liquid, and a heat dissipation opening configured to dissipate heat of the integrated circuit; and a third member formed from a metal, the third member being disposed on the second member. The heat dissipation opening is located between the integrated circuit and the third member.