Patent ID: 11912028
Assignee: CANON KABUSHIKI KAISHA
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 14:
15. A liquid ejection head comprising:
a substrate for a liquid ejection head comprising a base material, a heating element comprising a heating resistor layer for generating thermal energy for discharging a liquid, a wiring layer for supplying electric power to the heating element and an insulating film for insulating the wiring layer, and an ejection orifice forming member,
wherein at least a part of the said insulating film includes a material layer represented by SiwOxCyNz, and
wherein w+x+y+z=100 at %, 37≤2≤60 at. %, 30≤x≤53 at. %, 6≤y≤29 at. %, and 4≤z≤9 at. %.