Patent ID: 6176571
Filing Date: 2001-01-23
Classification: B41J

Abstract:
A printer device comprising:a pressurizing chamber forming unit comprising a vibrating plate spaced apart from an orifice plate with a pressurizing chamber formed therebetween, the pressurizing chamber forming unit further comprising a liquid supply duct for supplying the liquid to the pressurizing chamber;the vibrating plate being connected to a piezoelectric device, the piezoelectric device being disposed on an opposing side of the vibration plate from the pressurizing chamber;the orifice plate comprising a metal plate having a thickness and an organic film having a total thickness greater than the thickness of the metal plate, the organic film comprising a first resin layer coated onto the metal plate and having a glass transition temperature 250.degree. C. or less, the organic film further comprising a second resin layer coated onto the first resin layer, the second resin layer having a glass transition temperature of greater than 250.degree. C., the second resin layer having a thickness that is greater than a thickness of the first resin layer and greater than the thickness of the metal plate;the metal plate comprising a ink inlet port in communication with the pressurizing chamber;the organic film being coated onto an opposing side of the metal plate from the pressurizing chamber, the organic film comprising an emission nozzle in alignment with the ink inlet port;the ink inlet port having a diameter, the emission nozzle having a diameter, the diameter of the ink inlet port being larger than the diameter of the emission nozzle by an amount ranging from 30 to 150 pm.