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. 14, 2012
Filed:
Jun. 04, 2009
Hideo Saikawa, Machida, JP;
Kyosuke Toda, Hachioji, JP;
Keiichiro Tsukuda, Yokohama, JP;
Takayuki Ono, Kawasaki, JP;
Hideo Saikawa, Machida, JP;
Kyosuke Toda, Hachioji, JP;
Keiichiro Tsukuda, Yokohama, JP;
Takayuki Ono, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A printing head, which can suppress the occurrence of cracks in a printing element substrate, even if accidentally dropped, includes the printing element substrate, an ink flow passage and a sheet-shaped portion comprising a rectangular major surface. A rear surface side of the major surface of the sheet-shaped portion is provided with a space formed separately from the ink flow passage. A surface adjacent to the major surface is provided with an opening of the space formed therein, and the sheet-shaped portion is provided with a concave portion formed on the rear surface side of two regions between the printing element substrate and two corner portions arranged proximate to the opening.