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:
Sep. 07, 2010
Filed:
Jul. 31, 2007
Yasuyuki Matsumoto, Azumino, JP;
Tetsushi Takahashi, Shimosuwa-cho, JP;
Akira Matsuzawa, Shiojiri, JP;
Yasuyuki Matsumoto, Azumino, JP;
Tetsushi Takahashi, Shimosuwa-cho, JP;
Akira Matsuzawa, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A liquid ejection head including: a flow-channel forming substrate having a pressure generating chamber which communicates with a liquid supply channel which communicates with one end of the pressure generating chamber in terms of a first direction so as to have a first length for supplying liquid to the pressure generating chamber; and a pressure generating unit that causes the change in pressure in the pressure generating chamber, wherein the liquid supply channel is formed by narrowing the width of the pressure generating chamber in a second direction substantially perpendicular to the first direction so as to have a second length shorter than the first length, a stepped surface is formed between the side surface of the pressure generating chamber in the second direction and the side surface of the liquid supply channel in the second direction, and wherein a bridge is provided at a corner defined by the stepped surface, the side surface of the pressure generating chamber in the second direction on the stepped surface side, and one of the surfaces of the pressure generating chamber in a third direction which is orthogonal to the first direction and the second direction of the flow-channel forming substrate for bridging the corner.