Patent ID: 6109737
Filing Date: 2000-08-29
Classification: B41J

Abstract:
A printer comprising:a pressure chamber forming part comprising a pressure chamber and a liquid supply passage for supplying liquid to the pressure chamber, the pressure chamber forming part comprising a first member bonded to a diaphragm and a second member bonded to a nozzle forming member with the first and second members connected together with a first adhesive layer so that the pressure forming part is sandwiched between a diaphragm and a nozzle forming member, the nozzle forming member comprising an emission nozzle in communication with the pressure chamber,the diaphragm comprising a thermoplastic layer with one side of the thermoplastic layer being adhered to the pressure chamber forming part over the pressure chamber and liquid supply passage and a second side facing a piezoelectric element, the second side further accommodating a pattern layer laminated on the second side of the thermoplastic layer between the piezoelectric element and the thermoplastic layer, the pattern layer only partly covering the second side of the thermoplastic layer and not extending laterally outward beyond the piezoelectric element, the piezoelectric element being connected to the diaphragm at the pattern layer, the pattern layer being in alignment with both the pressure chamber and the liquid supply passage.