Patent ID: 6668454
Filing Date: 2003-12-30
Classification: B23K,B41J,Y10T

Abstract:
A method for manufacturing a liquid-discharging recording head by projecting laser energy, via a laser beam having an energy density per unit time, onto a subject to be processed, to form holes serving as discharging ports for discharging a liquid, said method comprising:a first processing step of processing the subject by projecting onto the subject the laser beam with a predetermined value for the energy density per unit time; followed by a second processing step of processing the subject by projecting onto the subject the laser beam with a value for the energy density per unit time smaller than the predetermined value, to complete formation of the holes, wherein at least the last projection of the laser beam used in said method to form the holes serving as the discharging ports has the lowest value for the energy density per unit time among values for the energy density per unit time used in said method.