公开(公告)号：US5016129A

公开(公告)日：1991-05-14

申请号：US330216

申请日：1989-03-29

申请人： Ryo Goto ,  Tadafumi Tomitani ,  Fumio Nitanda ,  Masanobu Yamazaki ,  Manabu Toyoda ,  Makoto Ushijima

发明人： Ryo Goto ,  Tadafumi Tomitani ,  Fumio Nitanda ,  Masanobu Yamazaki ,  Manabu Toyoda ,  Makoto Ushijima

IPC分类号： G11B5/105 ,  G11B5/127 ,  G11B5/23

CPC分类号： G11B5/105 ,  G11B5/1272 ,  G11B5/232 ,  Y10T29/49041 ,  Y10T29/49059

摘要： A flying-type composite magnetic head includes (a) a magnetic core constituted by a pair of core pieces bonded together by a first glass portion, at least one of opposing surfaces of the core pieces being formed with a thin magnetic metal layer; (b) a non-magnetic slider having a slit for receiving the magnetic core; and (c) a second glass portion for fixing the magnetic core in the slit; the first glass portion having a softening point lower than a first bonding temperature by 70.degree. C. or more and a yielding temperature higher than a second bonding temperature, and the second glass portion having a softening point lower than a second bonding temperature by 70.degree. C. or more. The first bonding temperature T.sub.1 .degree.C.) for forming the first glass portion satisfies the following relation:T.sub.1 .ltoreq.aW+b,wherein W is a thickness (.mu.m) of the thin magnetic metal layer, a is between -25 and -15 and b is between 720 and 770, and a second bonding temperature T.sub.2 for forming the second glass portion is 530.degree. C. or lower.

摘要翻译： 飞行型复合磁头包括：（a）由通过第一玻璃部分接合在一起的一对芯片构成的磁芯，所述芯片的相对表面中的至少一个形成有薄的磁性金属层; （b）具有用于接收磁芯的狭缝的非磁性滑块; 和（c）用于将所述磁芯固定在所述狭缝中的第二玻璃部分; 第一玻璃部分的软化点低于第一接合温度70℃以上，屈服温度高于第二接合温度，第二玻璃部分的软化点低于第二接合温度70℃ C.或更多。 用于形成第一玻璃部分的第一接合温度T1℃）满足以下关系：T1

公开(公告)号：US5086553A

公开(公告)日：1992-02-11

申请号：US606473

申请日：1990-10-31

申请人： Ryo Goto ,  Tadafumi Tomitani ,  Fumio Nitanda ,  Masanobu Yamazaki ,  Manabu Toyoda ,  Makoto Ushijima

发明人： Ryo Goto ,  Tadafumi Tomitani ,  Fumio Nitanda ,  Masanobu Yamazaki ,  Manabu Toyoda ,  Makoto Ushijima

IPC分类号： G11B5/105 ,  G11B5/127 ,  G11B5/23

CPC分类号： G11B5/105 ,  G11B5/1272 ,  G11B5/232 ,  Y10T29/49041 ,  Y10T29/49059

摘要： A flying-type composite magnetic head includes (a) a magnetic core constituted by a pair of core pieces bonded together by a first glass portion, at least one of opposing surfaces of the core pieces being formed with a thin magnetic metal layer; (b) a non-magnetic slider having a slit for receiving the magnetic core; and (c) a second glass portion for fixing the magnetic core in the slit; the first glass portion having a softening point lower than a first bonding temperature by 70.degree. C. or more and a yielding temperature higher than a second bonding temperature, and the second glass portion having a softening point lower than a second bonding temperature by 70.degree. C. or more. The first bonding temperature T.sub.1 (.degree.C.) for forming the first glass portion satisfies the following relation:T.sub.1 .ltoreq.aW+b,wherein W is a thickness (.mu.m) of the thin magnetic metal layer, a is between -25 and -15 and b is between 720 and 770, and a second bonding temperature T.sub.2 for forming the second glass portion is 530.degree. C. or lower.

公开(公告)号：US4999726A

公开(公告)日：1991-03-12

申请号：US329324

申请日：1989-03-27

申请人： Ryo Goto ,  Tadafumi Tomitani ,  Fumio Nitanda ,  Manabu Toyoda ,  Makoto Ushijima

发明人： Ryo Goto ,  Tadafumi Tomitani ,  Fumio Nitanda ,  Manabu Toyoda ,  Makoto Ushijima

IPC分类号： G11B5/105 ,  G11B5/127 ,  G11B5/187 ,  G11B5/23

CPC分类号： G11B5/187 ,  G11B5/105 ,  G11B5/1272

摘要： A magnetic core for a flying-type composite magnetic head, including a pair of core pieces, a glass portion for bonding the core pieces, and a thin magnetic metal layer of Fe-Al-Si alloys formed on at least one of opposing surfaces of the core pieces. The thin magnetic metal layer extends by 10 .mu.m or more from an apex of a magnetic gap defined by the core pieces and has an inner end existing by 15 .mu.m or more inside an inner end of the bonding glass portion.

摘要翻译： 一种用于飞行型复合磁头的磁芯，包括一对芯片，用于粘结芯片的玻璃部分和形成在至少一个相对表面上的Fe-Al-Si合金的薄磁性金属层 核心件。 薄磁性金属层从由芯片限定的磁隙的顶点延伸10μm以上，在接合玻璃部的内端内侧具有15μm以上的内端。