LASER BEAM MACHINING METHOD, LASER BEAM MACHINING DEVICE, MANUFACTURING METHOD FOR LIQUID DROPLET DISCHARGE HEAD, AND LIQUID DROPLET DISCHARGE HEAD

摘要

PROBLEM TO BE SOLVED: To provide a laser beam machining method in which scattering matters of one member are not adhered to the surface of a workpiece even if one member is cut along a boundary line (a projection line) by the end face of the other member with the irradiation of a laser beam to one member along the end face of the other member, and to also provide a laser beam machining device, a manufacturing method for a liquid droplet discharge head, and a liquid droplet discharge head.

SOLUTION: A first member 201 is cut with the irradiation of the laser beam 26 to the workpiece 203, which is provided with the first member 201 and a second member 202 arranged on the upper side of the first member 201, along the end face 212 of the second member 202. The laser beam 26 has a higher absorption factor to the first member 201 compared with that of to the second member 202. The irradiation of the laser beam is executed in a state of exposing at least either of the upper face and the lower face of the workpiece 203 to a liquid flow.

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