LASER BEAM MACHINING METHOD, MANUFACTURING METHOD FOR INK JET RECORDING HEAD USING THE LASER BEAM MACHINING METHOD, AND THE INK JET RECORDING HEAD BY THE MANUFACTURING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a laser beam machining method capable of enhancing machining accuracy of a work piece, in particular uniformity in engraving by evenly making adhere and distributing carbon produced as a byproduct, a manufacturing method for an ink jet recording head using the laser beam machining method, and the ink jet recording head by the manufacturing method. SOLUTION: In conducting abrasion machining by a laser beam, the machining area for the work piece is divided so that the divided areas do not make side-contact with one another, on the other hand, the area of 50% or less of the entire machining area of the work piece is subjected to simultaneous machining through a trimming mask filter, and the mask filter is moved in terms of elapsed-time so as to integrally machine the entire maching area of the work piece evenly.