发明名称 Method of manufacturing magnetic heads
摘要 A method is provided of manufacturing magnetic heads which comprises the steps of providing a pair of core block pieces each having a gap defining surface, masking a pair of spaced areas of the gap defining surface of one core block piece, subjecting the gap defining surface of said one core block piece to etching by an ion beam or plasma sputtering, disposing the etched core block piece and the other non-etched core block piece in abutting relationship so that the respective gap defining surfaces are located opposite to each other, placing a gap forming material in a clearance formed between the gap defining surfaces of the both core block pieces as a result of the etching step applied to one of the gap defining surfaces, causing the gap forming material to melt and permeate into the clearance, and subsequently causing the gap forming material to solidify to provide a core block, which is cut to size to produce a core or cores.
申请公布号 US4045864(A) 申请公布日期 1977.09.06
申请号 US19760703501 申请日期 1976.07.08
申请人 OLYMPUS OPTICAL CO. LTD. 发明人 MOROKUMA, TADASHI;TSUDA, NAOTSUNE
分类号 G11B5/133;G11B5/193;G11B5/23;(IPC1-7):G11B5/42 主分类号 G11B5/133
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