Patent ID: 9616665
Date: 2017-04-11
CPC Classifications: B29C,B29K,B29L,B41J,Y10T

Claim:
1. A method for manufacturing a liquid supply member that supplies liquid to a discharge port that discharges liquid, the method comprising: preparing a transparent member being transparent to a laser beam and an absorption member for absorbing a laser beam, at least one of the transparent member and the absorption member having a groove for forming a supply path that supplies the discharge port with liquid; bringing the transparent member and the absorption member into contact with each other, with the groove inside; arranging a plurality of laser beam sources along a longitudinal direction of the groove, each of the laser beam sources having a laser beam aperture with a diameter such that the groove is entirely irradiated with laser beams; and forming the supply path by emitting laser beams simultaneously from the plurality of laser beam sources, via the transparent member, toward a contact portion, which is provided in a vicinity of the groove and at which the transparent member and the absorption member are in contact, to weld the transparent member and the absorption member at the contact portion, wherein the laser beams are emitted during the forming step such that a total irradiation amount per unit area with laser beams for a first portion that are included in the contact portion and located in a vicinity of an end in the longitudinal direction of the groove is larger than a total irradiation amount per unit area with laser beams for a second portion other than the first portion of the contact portion.