Patent ID: 11919306
Assignee: SII PRINTEK INC.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A method of manufacturing a liquid jet head chip, comprising:
a substrate preparation step of preparing an actuator plate substrate having a jet channel communicated with a nozzle hole configured to jet liquid, and a non-jet channel which does not jet the liquid; and
a protective film formation step of forming a protective film configured to protect an electrode formed on an inner surface of the jet channel from the liquid in a state in which the jet channel is exposed and the non-jet channel is covered, after the substrate preparation step,
wherein the actuator plate substrate has a first surface on which a nozzle plate provided with the nozzle hole communicated with the jet channel is disposed, and
in the protective film formation step, a mask having an opening part from which the jet channel is exposed is disposed on the first surface of the actuator plate substrate, and then, the protective film is provided to the jet channel through the opening part, and
further wherein the actuator plate substrate further has a second surface crossing the first surface, and
in the protective film formation step, the mask is disposed so as to straddle the first surface and the second surface of the actuator plate substrate, and then, the protective film is provided to the jet channel through the opening part.