Patent ID: 8215018

Claim:
A method for manufacturing a liquid discharge head including a discharge port for discharging liquid, a supply path for supplying the liquid to the discharge port, a transparent member that has light transmittance for a laser beam, and an absorptive member that has absorptivity to the laser beam, and the transparent member and the absorptive member include supply path sections that become a part of a wall of the supply path, the method comprising: bringing the transparent member and the absorptive member into contact with each other in such a manner that a surface of the transparent member including the supply path section and a surface of the absorptive member including the supply path section are brought into contact with each other in the vicinity of the supply path sections; welding the transparent member and the absorptive member by irradiating the contact portion where both members are in contact with each other with the laser beam via the transparent member; and exhausting gas from an exhaust path formed on the liquid discharge head in the vicinity of the contact portion at least throughout the welding process.