LASER BEAM MACHINING METHOD

To provide a laser beam machining method in which a tapered shape is unlikely to be formed when forming a through hole in a printed circuit board.SOLUTION: A laser beam machining method includes: a first drilling step to form a penetrated discharge hole having a smaller diameter than a target hole d...

Ausführliche Beschreibung

Bibliographische Detailangaben

Hauptverfasser:	ITO YASUSHI, ITAMI KATSUHIRO
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY MACHINE TOOLS MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS METAL-WORKING NOT OTHERWISE PROVIDED FOR PERFORMING OPERATIONS PRINTED CIRCUITS SOLDERING OR UNSOLDERING TRANSPORTING WELDING WORKING BY LASER BEAM
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