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1. 发明授权

US5229904A Magnetic read/write having a reduced thickness closure core 失效
标题翻译：具有减小的厚度闭合芯的磁读/写
公开(公告)号：US5229904A
公开(公告)日：1993-07-20
申请号：US720699
申请日：1991-06-25
申请人： Tomio Ito , Hideyuki Miyazaki , Hideyuki Moriya , Kazuhito Wakabayashi
发明人： Tomio Ito , Hideyuki Miyazaki , Hideyuki Moriya , Kazuhito Wakabayashi
IPC分类号： G06K7/08 , G11B5/245 , G11B15/12
CPC分类号： G11B15/125 , G06K7/084 , G11B5/2452
摘要： This invention relates to a wide-write/narrow-read head having a pair of C-shaped cores one of which is used as a read core and the other of which is used as a write core, and a closure core which is provided between the two cores to shut off side magnetic circuits at the time of data reading. The closure core is reduced in thickness at the tip end and is shaped to slope toward the rear head so as to increase magnetic resistances from said closure core to said read core in order to prevent the magnetic flux extending between said write core and said closure core from leaking into said read core from said closure core.
摘要翻译：本发明涉及一种具有一对C形芯的宽写/窄读头，其中一个用作读取磁芯，另一个用作写磁芯，以及闭合磁芯，两个核心在数据读取时切断侧磁路。闭合芯在尖端处的厚度减小并且被成形为朝向后头倾斜，以便增加从所述封闭芯到所述读取芯的磁阻，以便防止在所述写入芯和封闭芯之间延伸的磁通量从所述封闭芯泄漏到所述读取芯中。

2. 发明授权

US5345354A Magnetic read/write head having a reduced thickness closure core 失效
标题翻译：具有减小厚度的封闭芯的磁读/写头
公开(公告)号：US5345354A
公开(公告)日：1994-09-06
申请号：US45109
申请日：1993-04-12
申请人： Tomio Ito , Hideyuki Miyazaki , Hideyuki Moriya , Kazuhito Wakabayashi
发明人： Tomio Ito , Hideyuki Miyazaki , Hideyuki Moriya , Kazuhito Wakabayashi
IPC分类号： G06K7/08 , G11B5/245 , G11B15/12 , G11B5/17 , G11B5/187 , G11B5/265
CPC分类号： G11B5/2452 , G06K7/084 , G11B15/125
摘要： This invention relates to a wide-write/narrow-read head having a pair of C-shaped cores one of which is used as a read core and the other of which is used as a write core, and a closure core which is provided between the two cores to shut off side magnetic circuits at the time of data reading. The closure is reduced in thickness at the tip end and is shaped to slope toward the read head so as to increase magnetic resistance from said closure core to said read core in order to prevent the magnetic flux extending between said write core and said closure core from leaking into said read core from said closure core.
摘要翻译：本发明涉及一种具有一对C形芯的宽写/窄读头，其中一个用作读取磁芯，另一个用作写磁芯，以及闭合磁芯，两个核心在数据读取时切断侧磁路。闭合件在尖端处的厚度减小并且被成形为朝向读头倾斜，以便增加从所述封闭芯到所述读取芯的磁阻，以便防止在所述写入芯和所述闭合芯之间延伸的磁通量从所述封闭芯泄漏到所述读取芯中。

3. 发明授权

US5029032A Magnetic head for high density recording 失效
标题翻译：磁头用于高密度记录
公开(公告)号：US5029032A
公开(公告)日：1991-07-02
申请号：US365696
申请日：1989-05-25
申请人： Taiki Yamada , Masahiro Miyazaki , Masayuki Arakawa , Hideyuki Moriya , Kazuhito Wakabayashi , Kazuarki Suzuki , Koji Terazono
发明人： Taiki Yamada , Masahiro Miyazaki , Masayuki Arakawa , Hideyuki Moriya , Kazuhito Wakabayashi , Kazuarki Suzuki , Koji Terazono
IPC分类号： G11B5/187 , G11B5/245
CPC分类号： G11B5/1878 , G11B5/2452
摘要： A magnetic head includes first and second cores joined into a one-piece member through a nonmagnetic spacer. A DGL head has a low saturation magnetic flux density thin film disposed between the first core and the nonmagnetic spacer. An EDG head further has a high saturation magnetic flux density thin film disposed between the second core and the nonmagnetic spacer in the DGL head structure. The low saturation magnetic flux density thin film is formed of an amorphous alloy preferably having a saturation magnetic flux density of 1,500 to 3,000 G.
摘要翻译：磁头包括通过非磁性间隔件连接成一件式构件的第一和第二芯。 DGL头具有设置在第一芯和非磁性间隔物之间的低饱和磁通密度薄膜。 EDG头还具有设置在DGL头结构中的第二芯和非磁性间隔物之间的高饱和磁通密度薄膜。低饱和磁通密度薄膜由优选饱和磁通密度为1500〜3,000Gg的非晶态合金形成。

4. 发明授权

US5057957A Magnetic read/write head having a magnetic short circuit 失效
标题翻译：具有磁短路的磁读/写磁头
公开(公告)号：US5057957A
公开(公告)日：1991-10-15
申请号：US487304
申请日：1990-03-02
申请人： Tomio Ito , Hideyuki Miyazaki , Hideyuki Moriya , Kazuhito Wakabayashi
发明人： Tomio Ito , Hideyuki Miyazaki , Hideyuki Moriya , Kazuhito Wakabayashi
IPC分类号： G06K7/08 , G11B5/245 , G11B15/12
CPC分类号： G11B5/2452 , G06K7/084 , G11B15/125
摘要： This invention relates to a wide-write/narrow-read head having a pair of C-shaped cores one of which is used as a read core and the other of which is used as a write core, and a closure core which is provided between the two cores to shut off side magnetic circuits at the time of data reading, and provides a magnetic head which further includes an element to either offset magnetic flux of said side magnetic circuits or shorten the magnetic path length thereof or to increase magnetic resistances from said closure core to said read core in order to prevent the magnetic flux extending between said write core and said closure core from leaking into said read core from said closure core. This invention also provides a data recording/reproducing method which can offset magnetic flux of the side magnetic circuits at the time of data reading by forming a magnetic flux in said closure core in the opposite direction, and which can suspend such offsetting operation at the time of data writing by a simple ON/OFF switch.
摘要翻译：本发明涉及一种具有一对C形芯的宽写/窄读头，其中一个用作读取磁芯，另一个用作写磁芯，以及闭合磁芯，所述两个芯在数据读取时切断侧磁路，并且提供一个磁头，该磁头还包括一个元件，以便偏移所述侧磁路的磁通量或缩短其磁路长度，或增大磁阻从所述封闭核心到所述读取核心，以便防止在所述写入核心和所述封闭核心之间延伸的磁通量从所述封闭核心泄漏到所述读取的核心中。本发明还提供了一种数据记录/再现方法，其可以通过在相反方向上形成所述闭合磁芯中的磁通量来抵消在数据读取时侧磁路的磁通量，并且可以在此时暂停这种偏移操作通过简单的ON / OFF开关进行数据写入。

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