Patent ID: 6634734
Filing Date: 2003-10-21
Classification: B23K,B41J

Abstract:
A method for manufacturing an ink jet recording head in which an ink discharge port for discharging an ink droplet to be adhered to a recording medium, a liquid chamber for containing ink to be supplied to said ink discharge port, an ink flow path for communicating said ink discharge port with said liquid chamber, an energy generating element provided in said ink flow path and adapted to generate energy for discharging the ink and an ink supply opening for supplying the ink from exterior into said liquid chamber are formed by bonding or adhering plate members, wherein:when an orifice plate in which said ink discharge port is formed is subjected to laser working, a laser light of plural pulses having very great spatial and time energy density and emitted from a laser oscillator for oscillating the laser light at a pulse emitting time smaller than 1 pico-second is used, and the laser beam is illuminated from an outer surface side of said orifice plate which is opposite to an ink supplying side thereby to form an ink discharge port working pattern on the outer surface of said orifice plate by focus projection.