| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a method of laser machining with which a byproduct is not generated, the deposition of the thermal energy converted during the laser machining is thoroughly prevented from being accumulated in a work of a resin or the like, and the melting and the thermal expansion of the work do not take place, thus a precise machining is carried out, and to provided a method of manufacturing an ink jet recording head by using the method of laser machining, and the ink jet recording head manufactured by the method of manufacturing. SOLUTION: A femtosecond laser is used, plural machining forms located with a predetermined spacing are simultaneously machined by sublimation, or two ore more kinds of different materials are substantially simultaneously machined by sublimation in one machining process, or machined by sublimation by converging the beam to the level not smaller than a predetermined energy density inside the work is transparent to the laser beam at its wave length, or by making a material B located inside the work irradiated by the laser beam.</p> |
