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:
Aug. 03, 2021
Filed:
Aug. 29, 2019
Canon Kabushiki Kaisha, Tokyo, JP;
Tomoki Ishiwata, Kawasaki, JP;
Shuzo Iwanaga, Kawasaki, JP;
Masaki Oikawa, Inagi, JP;
Keiji Tomizawa, Yokohama, JP;
Tomohiro Sato, Tokyo, JP;
Akiko Hammura, Tokyo, JP;
Chiaki Muraoka, Kawaguchi, JP;
Shimpei Yoshikawa, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A liquid injection head improving electric reliability includes: a substrate including: energy generating elements configured to apply energy for ejection to a liquid, and a substrate upper surface on which terminals respectively connected to electric wirings are provided, an ejection port forming member having: an ejection port forming surface in which the ejection ports for ejecting a liquid are formed, and a back surface on a side opposite to the ejection port forming surface, which is arranged so as to opposite to the substrate upper surface, and a sealant configured to cover connecting portions between the electric wirings and the terminals.