Patent ID: 7980676
Filing Date: 2011-07-19
Classification: B41J

Abstract:
1. A liquid ejection head comprising: a liquid ejection substrate comprising a liquid supply port for supplying liquid, an ejection outlet for ejecting the liquid supplied from the liquid supply port, and ejection energy generating means for generating energy for ejecting the liquid; and a supporting member having a supporting surface for supporting said liquid ejection substrate and a liquid supply hole for supplying liquid to said liquid ejection substrate, the liquid supply hole communicating with the liquid supply port of said liquid ejection substrate to form a communicating portion, a periphery of which is sealed by a sealant, wherein the liquid supply hole of said supporting member has an opening larger than that of the liquid supply port of said liquid ejection substrate, wherein said supporting member has an inner wall portion including an edge line portion defined by the liquid supply hole on a side where said liquid ejection substrate is to be disposed, the edge line portion being covered with the sealant, wherein said liquid ejection substrate is provided with an electrode on a surface facing the supporting surface of said supporting member, and wherein said supporting member is provided with an electrode, on the supporting surface, connected to the electrode of said liquid ejection substrate by an electrical connecting member.