Patent ID: 8176630

Claim:
A method of producing liquid droplet ejection head comprising: joining a flow path member plate and a protection member plate to opposite faces of a plate for nozzles, the protection member plate being disposed on a surface of the plate for nozzles that is on a liquid droplet ejection side of the plate for nozzles; a first forming step including forming a flow path member including at least the flow path member plate, the flow path member having liquid supply paths and a damper portion in at least one part of a region, the region being on the plate for nozzles, corresponding to the liquid supply paths by etching a predetermined pattern into at least the flow path member plate, the damper portion reducing a fluctuation of an ejection amount of the liquid droplets to enable stable ejection; after the first forming step, a second forming step including forming a nozzle plate by performing laser processing on the plate for nozzles from a side of the flow path member to form the nozzles; wherein the protection member plate is separate from the damper portion and is in a periphery of the nozzles and at least one part of the damper portion, and the damper portion is formed to include a damper reinforcement portion comprising a first part of the damper portion in which the protection member is disposed, and a damper function portion comprising a second part of the damper portion in which the protection member is not disposed, the second part of the damper portion being distinct from the first part of the damper portion.