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:
Jul. 14, 2015
Filed:
Jun. 04, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Toshiaki Kurosu, Oita, JP;
Hiroto Komiyama, Tokyo, JP;
Jun Yamamuro, Yokohama, JP;
Yoshinori Tagawa, Yokohama, JP;
Takanobu Manabe, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A liquid ejection head chip includes a liquid ejection unit having a plurality of ejection orifices for ejecting a liquid, a flow path in communication with the ejection orifices, and an energy generating element that generates energy for ejecting the liquid, the liquid ejection unit being provided on an upper surface formed of a (100) surface of a silicon single-crystal substrate. The side surfaces in at least one of two combinations of opposing side surfaces of the substrate have (111) surfaces of silicon single crystal and the angles of the (111) surfaces relative to the (100) surface are supplementary to each other.