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1. 发明公开

EP0138580A3 Alloy magnetic recording head and a manufacturing method therefore 失效
标题翻译：合金磁记录头及其制造方法
公开(公告)号：EP0138580A3
公开(公告)日：1986-04-02
申请号：EP84306941
申请日：1984-10-11
申请人： Matsushita Electric Industrial Co., Ltd.
发明人： Aoki, Masaki , Sakai, Masayuki , Torii, Hideo , Okinaka, Hideyuki , Hirota, Hozumi
IPC分类号： G11B05/147 , G11B05/21 , G11B05/235
CPC分类号： G11B5/1475 , G11B5/232 , G11B5/235
摘要： An iron-aluminum-silicon (Fe-Ai-Si) series magnetic alloy magnetic head and a manufacturing method therefor. The magnetic head includes front gap forming surfaces which serve as the magnetic tape transportation surfaces and comprise a non-magnetic ceramic films and glass films, and rear gap forming surfaces aiming at junction at the portion reverse to the tape transportation side and comprising either the same materials at the front gap or silver-copper series alloy films. The manufacturing method forms by means of sputtering non-magnetic ceramic films at the front gap forming surfaces of the core pieces and either non-magnetic ceramic films or silver-copper series alloy films at the rear gap forming surfaces, in some cases implanting ion onto the films, and allowing the cores to abut against each other, so that the cores are subjected to heat treatment in a non-oxidizing atmospher less than or more than atmospheric pressure and at a temperature higher than the softening point of the glass and the liquid phase appearance temperature of the silver-copper series alloy.

2. 发明授权

EP0138580B1 Alloy magnetic recording head 失效
标题翻译：合金磁记录头
公开(公告)号：EP0138580B1
公开(公告)日：1990-04-25
申请号：EP84306941.0
申请日：1984-10-11
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： Aoki, Masaki , Sakai, Masayuki , Torii, Hideo , Okinaka, Hideyuki , Hirota, Hozumi
IPC分类号： G11B5/147 , G11B5/21 , G11B5/235
CPC分类号： G11B5/1475 , G11B5/232 , G11B5/235

3. 发明公开

EP0138580A2 Alloy magnetic recording head 失效
标题翻译： Aufnahmemagnetkopf aus Legierung。
公开(公告)号：EP0138580A2
公开(公告)日：1985-04-24
申请号：EP84306941.0
申请日：1984-10-11
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： Aoki, Masaki , Sakai, Masayuki , Torii, Hideo , Okinaka, Hideyuki , Hirota, Hozumi
IPC分类号： G11B5/147 , G11B5/21 , G11B5/235
CPC分类号： G11B5/1475 , G11B5/232 , G11B5/235
摘要： An iron-aluminum-silicon (Fe-Ai-Si) series magnetic alloy magnetic head and a manufacturing method therefor. The magnetic head includes front gap forming surfaces which serve as the magnetic tape transportation surfaces and comprise a non-magnetic ceramic films and glass films, and rear gap forming surfaces aiming at junction at the portion reverse to the tape transportation side and comprising either the same materials at the front gap or silver-copper series alloy films. The manufacturing method forms by means of sputtering non-magnetic ceramic films at the front gap forming surfaces of the core pieces and either non-magnetic ceramic films or silver-copper series alloy films at the rear gap forming surfaces, in some cases implanting ion onto the films, and allowing the cores to abut against each other, so that the cores are subjected to heat treatment in a non-oxidizing atmospher less than or more than atmospheric pressure and at a temperature higher than the softening point of the glass and the liquid phase appearance temperature of the silver-copper series alloy.
摘要翻译：铁 - 铝 - 硅（Fe-Al-Si）系列磁性合金磁头及其制造方法。磁头包括用作磁带传送表面的前间隙形成表面，并且包括非磁性陶瓷膜和玻璃膜，以及在与带传送侧相反的部分处的接合处的后间隙形成表面，并且包括相同的前隙材料或银铜系列合金膜。该制造方法通过在芯片的前间隙形成表面处溅射非磁性陶瓷膜和在后间隙形成表面处的非磁性陶瓷膜或银 - 铜系合金膜形成，在某些情况下将离子注入到并且允许芯彼此抵接，使得芯在低于或大于大气压的非氧化性气氛中并且在高于玻璃和液体的软化点的温度下进行热处理银 - 铜系列合金的相出现温度。

4. 发明公开

EP0053944A1 A perpendicular magnetic recording and reproducing head apparatus and a magnetic recording system using the same 失效
标题翻译：头部组件用于垂直磁记录和重放和相同的用途的磁记录系统。
公开(公告)号：EP0053944A1
公开(公告)日：1982-06-16
申请号：EP81305808.8
申请日：1981-12-09
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： Hirota, Hozumi , Iwahara, Katsutoshi , Sato, Tomi
IPC分类号： G11B5/02 , G11B5/12 , G11B5/20 , G11B5/70
CPC分类号： G11B5/245 , G11B5/127 , G11B5/1278
摘要： A magnetic recording and/or reproducing head comprises a ring-shaped core (41) provided with a gap (43). A pair of coils (421, 422) are wound on the core and connection means (44) are connected to the coils (421, 422) for changing the mode of connection of the coils from between a first condition in which homopolar poles are formed across the gap (43) for recording and a second condition in which heteropoles are formed across the gap (43) for reproduction. The first condition can be achieved with the coils either inversely in parallel or inversely in series. The construction permits recording in a perpendicular direction in a recording medium (11) which can either be a conventional medium or a continuous film of Co-Cr which is perpendicularly anisotropic.
摘要翻译：一种磁记录和/或再现头包括设置有间隙（43），一个环形芯（41）。一对线圈（421，422）的缠绕在芯和连接装置（44）被连接到线圈（421，422），用于从在其中单极极的第一条件之间改变线圈的连接的模式形成跨越用于记录的间隙（43），并且其中直极跨用于再现的间隙（43）形成的第二条件。第一个条件可以与线圈要么相反地并联或反向串联来实现。该结构允许在记录介质（11），其可以是一个以常规介质或钴铬所有这些是垂直各向异性的连续电影在垂直方向上进行记录。

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