LIQUID-DISCHARGING RECORDING HEAD, A METHOD AND APPARATUS FOR MANUFACTURING THE SAME, A HEAD CARTRIDGE, AND A LIQUID-DISCHARGING RECORDING APPARATUS

摘要

A method for manufacturing a liquid-discharging recording head can prevent deviation in the dimensions and the pitch of grooves, serving as liquid channels, and holes, serving as discharging ports, and generation of burrs around discharging ports while maintaining the grooves and the holes to desired sizes and without increasing a time required for the processing when forming the grooves and the holes by projecting a laser beam. In the method, when performing ablation processing of the liquid-channel grooves or the discharging ports in a top-plate blank by projecting the laser beam, the processing is performed by changing the energy density per unit time of the laser beam continuously or stepwise by adjusting the oscillation voltage or the oscillation frequency of the laser beam, attenuating the laser beam, or moving a substance to be processed along the optical axis. It is thereby possible to prevent deviation in the dimensions and the pitch of the grooves and the holes due to expansion and contraction of resin by heat generated by irradiation of the laser beam having a high energy density, and prevent generation of burrs around the discharging ports.