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:
Oct. 11, 2011
Filed:
Apr. 12, 2010
Masako Shimomura, Kanagawa, JP;
Tadayoshi Inamoto, Tokyo, JP;
Kazunari Ishizuka, Shizuoka, JP;
Ryoichiro Kurobe, Kanagawa, JP;
Yohei Sato, Kanagawa, JP;
Akihiko Shimomura, Kanagawa, JP;
Isao Imamura, Kanagawa, JP;
Masako Shimomura, Kanagawa, JP;
Tadayoshi Inamoto, Tokyo, JP;
Kazunari Ishizuka, Shizuoka, JP;
Ryoichiro Kurobe, Kanagawa, JP;
Yohei Sato, Kanagawa, JP;
Akihiko Shimomura, Kanagawa, JP;
Isao Imamura, Kanagawa, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
An ink jet head has a head substrate including discharge elements for discharging ink, with an electric wiring board being electrically connected to the head substrate, in which the periphery of the head substrate is sealed with a first sealant, and an electric splice between the head substrate and the electric wiring board is sealed with a second sealant. The first and second sealants contain the same base resin and curing agent, and the second sealant shows higher hardness than the first sealant after curing. This ink jet head is free from problems such as cavities and fissures at the boundary of the two sealants caused by a difference in linear expansion coefficients.