Patent ID: 9610778
Date: 2017-04-04
CPC Classifications: B41J,C23F,G03F,H01L

Claim:
1. A liquid discharge head comprising: a liquid chamber wall member having a wall forming a liquid chamber storing liquid; and a liquid discharge head substrate containing a laminate of a base substrate having a surface on which an element generating energy for discharging liquid is formed, a first layer, and a second layer disposed on the first layer, contacting the wall, and having adhesiveness with the liquid chamber wall member higher than the adhesiveness of the first layer, and forming the liquid chamber with the liquid chamber wall member, wherein the first layer has a portion exposed from the second layer as viewed from a first direction orthogonal to the surface and contacting the liquid chamber wall member at a position distant from the liquid chamber in a second direction orthogonal to an inner surface of the wall relative to a portion where the wall and the second layer contact, and a length in the second direction of the portion of the first layer is 0.3 μm or more.