Patent ID: 8636336
Filing Date: 2014-01-28
Classification: B41J

Abstract:
1. A liquid discharge head comprising: a recording element substrate having a supporting member having a depression accommodating the recording element substrate, the depression including an electric wiring substrate disposed on a surface of the supporting member having the depression and having an electric connecting part connecting with a side of the discharge-port surface of the recording element substrate, wherein the side surfaces of the recording element substrate includes a first side surface on a side of the discharge-port surface having the electric connecting part and a second side surface on a side of the discharge-port surface not having the electric connecting part, wherein the bottom surface of the depression has a groove part extending along the second side surface between the supporting part and a sidewall of the depression, and wherein a space between the first side surface and the sidewall of the depression is sealed together with the electric connecting part with a sealant, at least a part of the second side surface is exposed and not covered with the sealant, and at least part of a surface of the adhesive facing the sidewall of the depression is sealed with the sealant.