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:
Nov. 21, 2017
Filed:
Dec. 02, 2016
Seiko Epson Corporation, Tokyo, JP;
Ayumi Yokoo, Matsumoto, JP;
Hiroyuki Nakamura, Shiojiri, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A flow path member includes a first flow path-forming member made of a material capable of absorbing a laser light and a second flow path-forming member made of a material that has a lower absorbance with respect to the laser light than the first flow path-forming member and having in a portion of an inner surface that at least partially forms a flow path at least one welded portion that is welded to the first flow path-forming member. An outer surface side of the second flow path-forming member that is an opposite side to the inner surface is provided with at least one light blocking portion capable of blocking the laser light and at least one transmitting portion that is capable of transmitting the laser light and that is positioned on an opposite side to the at least one welded portion and the at least one light blocking portion and the at least one transmitting portion are in contact on at least one boundary with each other. At least one external edge of the at least one welded portion is at a position that is shifted by a shift from the at least one boundary to a side toward which the laser light incident on the at least one boundary at an incident angle less than 90 degrees travels.