Patent ID: 9623655
Date: 2017-04-18
CPC Classifications: B41J

Claim:
1. A liquid discharge head comprising: a discharge-port-forming member having a first discharge port and a second discharge port through which a liquid is to be discharged, the first discharge port and the second discharge port being formed in a same surface of the discharge-port-forming member; and a pressure-chamber-forming member that includes a first pressure chamber which is in communication with the first discharge port and includes a first heating resistor formed in a bottom portion of the first pressure chamber, a second pressure chamber which is in communication with the second discharge port and includes a second heating resistor formed in a bottom portion of the second pressure chamber, a plurality of wiring layers, each of which includes a barrier metal as a base member, and a joint surface, which is joined to the discharge-port-forming member, wherein the first heating resistor and the second heating resistor whose depths from the same surface of the discharge-port-forming member are different from each other, the first heating resistor is formed of a first barrier metal, the second heating resistor is formed of a second barrier metal, and the plurality of wiring layers is not provided on a surface at a side of the joint surface of the first barrier metal and the second barrier metal.