| 摘要 |
In a printer device of the invention, a diaphragm having a thermoplastic layer and a pattern layer rests on a main surface, on which a liquid supply passage of a pressure chamber defining portion is formed, and when the thermoplastic layer of the diaphragm is heated to be bonded to the pressure chamber defining portion under pressure, pressure is concentratedly applied on the pattern layer of the diaphragm, an unnecessary pressure is not applied to that portion opposite to the liquid supply passage, on which the pattern layer is not formed, the liquid supply passage is not clogged by the thermoplastic layer, and an operation of bonding the diaphragm to the pressure chamber defining portion, in which a pressure chamber is defined, is easily performed. Further, in the printer device of the invention, an adhesive layer composed of a thermoplastic resin is formed between the pressure chamber defining portion and the diaphragm to adequately ensure an adhesive strength of the diaphragm relative to the pressure chamber defining portion. Also, in the printer device, if respective nozzles are formed in a nozzle forming member and an adhesive layer composed of a thermosetting resin is formed between the pressure chamber defining portion and the nozzle forming member, the printer device is manufactured such that after adhesion is effected between the diaphragm and the pressure chamber defining portion, the pressure chamber defining portion and the nozzle forming member are bonded to each other at room temperature, by which the adhesive layer composed of a thermoplastic resin is not influenced and which does not apply heat or the like on a liquid repellent film even if it is formed on the nozzle forming member, so that selection of a liquid repellent film is enlarged in range.
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