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11. 发明公开

EP0159039A2 Magnetic recording and reproducing system with composite magnetic head 失效
标题翻译： Magnetkopf。磁选机。
公开(公告)号：EP0159039A2
公开(公告)日：1985-10-23
申请号：EP85104722.5
申请日：1985-04-18
申请人： HITACHI, LTD.
发明人： Otomo, Shigekazu , Kumasaka, Noriyuki , Yamashita, Takeo , Morikawa, Juichi , Kobayashi, Takayuki , Kudo, Mitsuhiro
IPC分类号： G11B5/00 , G11B5/127 , G11B5/48
CPC分类号： G11B5/1875 , G11B5/1274
摘要： @ A magnetic recording and reproducing system uses a composite magnetic head whose surface (6) facing a magnetic recording medium is composed primarily of a ferromagnetic metal (4) and a high permeability ferrite single crystal (3), and which has a region close to a gap (7) and composed of the ferromagnetic metal (4). The magnetic head is arranged in such a fashion that the {710} plane of the ferrite single crystal (3) substantially coincides with a plane (8) forming a principal magnetic circuit of the magnetic head, that the direction lying inside the {110} plane is inclined at an angle of 15° to 75° with respect to a direction perpendicular to the surface (6) facing the recording medium, and that the recording medium travels in a direction which is relatively the same as, and parallel to, a vector formed by projecting a vector extending from the inside to the outside of the surface (6) facing the recording medium in the direction, on the surface (6) facing the magnetic recording medium. By this arrangement, the step occurring on the surface (6) facing the recording medium due to wear caused by the travel of the recording medium, and any output deterioration and fluctuation resulting from the step can be remarkably reduced.
摘要翻译：磁记录和再现系统使用其表面（6）面对磁记录介质的复合磁头主要由铁磁金属（4）和高磁导率铁氧体单晶（3）组成，并且具有接近于间隙（7）并由铁磁金属（4）组成。磁头的布置方式使得铁氧体单晶（3）的{110}面基本上与形成磁头的主磁路的平面（8）重合，<100>方向位于 {110}平面相对于与面向记录介质的表面（6）垂直的方向以15°至75°的角度倾斜，并且记录介质沿相对于并且通过在面向磁记录介质的表面（6）上投影从面向记录介质的表面（6）的向外延伸的矢量沿<100>方向投影的矢量形成的矢量。通过这种布置，由于由记录介质的行进引起的磨损而在面对记录介质的表面（6）上产生的台阶，以及由步骤引起的任何输出劣化和波动都可以显着降低。

12. 发明授权

EP0602567B1 Method for preparing a magnetic head 失效
标题翻译：一种用于制造磁头的方法
公开(公告)号：EP0602567B1
公开(公告)日：1998-03-11
申请号：EP93119981.4
申请日：1993-12-10
申请人： SONY CORPORATION
发明人： Saito, Tadashi , Takahashi, Shinji , Watanabe, Toshinobu
IPC分类号： G11B5/127 , G11B5/133 , G11B5/235 , G11B5/147
CPC分类号： G11B5/1875 , G11B5/1274 , Y10T428/1193

13. 发明公开

EP0352889A2 Magnetic head and method for manufacturing same 失效
标题翻译： Magnetkopf und Herstellungsverfahren。
公开(公告)号：EP0352889A2
公开(公告)日：1990-01-31
申请号：EP89305798.4
申请日：1989-06-08
申请人： MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
发明人： Ihara, Keita , Yohda, Hiroshi , Sawai, Eisuke , Takahashi, Ken
IPC分类号： G11B5/187
CPC分类号： G11B5/127 , G11B5/1875
摘要： There is disclosed herein a magnetic head comprising a ring-like magnetic core composed of first and second magnetic core halves made of a ferrite and held in abutment against each other so as to form a magnetic gap therebetween and an elongated tape-contact surface extending across the magnetic gap. The magentic core has in the tape-contact surface a channel formed to as to extend in the direction across the magnetic gap and the channel is filled with a magnetic metal material having a high-saturation magnetization. Preferably, the channel has a substantially V-shaped cross section. The magenetic gap exposed on the tape-contact surface is surrounded by the magnetic metal material and non-magnetic glass members provided at both ends of the magnetic gap. The non-magnetic glass members are provided so that the track width is constant from the tape-contact surface to an upper end of a winding hole of the ring-like magnetic core.
摘要翻译：这里公开了一种磁头，其包括由铁氧体制成的第一和第二磁芯半部构成的环状磁芯，并且彼此抵接以在其间形成磁隙，并且延伸穿过磁隙。磁性芯在带接触表面中具有形成为沿着穿过磁隙的方向延伸的通道，并且通道填充有具有高饱和磁化强度的磁性金属材料。优选地，通道具有大致V形的横截面。在磁带接触表面露出的磁隙被磁性金属材料和设置在磁隙的两端的非磁性玻璃构件包围。非磁性玻璃构件被设置成使得轨道宽度从环形磁芯的带接触表面到绕组孔的上端恒定。

14. 发明公开

EP0300605A1 Magnetic head for reading and/or writing data from and/or onto a magnetic medium 失效
标题翻译：磁头用于从一个和/或在磁性载体上读出和/或数据的写入。
公开(公告)号：EP0300605A1
公开(公告)日：1989-01-25
申请号：EP88305231.8
申请日：1988-06-08
申请人： SEAGATE TECHNOLOGY INTERNATIONAL
发明人： Perlov, Craig Meyer
IPC分类号： G11B5/187 , G11B5/23 , G11B5/235
CPC分类号： G11B5/1875 , G11B5/127 , G11B5/1878
摘要： A magnetic head for reading and/or writing data from and/or onto magnetic media comprises a core (11′) of ferromagnetic material, the core having a C-shaped portion (14′) and an I-shaped portion (12′) joined thereto. The C-shaped portion and I-shaped portion have confronting surfaces forming a gap (20′) therebetween. A coil (24′) induces magnetic flux in the core (11′). A first layer (22′) of magnetic material has a magnetic permeability greater than the ferromagnetic material of the confronting surface of the C-shaped portion forming the gap. An interface between the C-shaped portion and the first layer is substantially parallel to the gap. A second layer (42) of the magnetic material is deposited on an additional surface of the core. This second layer is integral with the first layer and overlaps the interface.
摘要翻译：一种磁头用于从上和/或磁介质读取和/或写入数据的步骤包括铁磁材料的芯（11分钟），具有C形部分的芯（14分钟），并于I形部分（12分钟）与其接合。的C形部分和I形部分具有相互面对的表面（20分钟）之间形成有一个缝隙。的线圈（24分钟）诱导在芯（11分钟）的磁通。磁性材料的第一层（22分钟）具有的磁导率比形成间隙C形部分的面对表面的铁磁材料更大。 C形部分和第一层之间的界面基本上平行于所述间隙。磁材料的第二层（42）沉积到所述芯的另外的表面。该第二层与第一层和积分重叠的接口。

15. 发明公开

EP0195235A2 Magnetic head and method of producing the same 失效
标题翻译： Magnetkopf和Herstellungsmethode。
公开(公告)号：EP0195235A2
公开(公告)日：1986-09-24
申请号：EP86101705.1
申请日：1986-02-11
申请人： HITACHI, LTD.
发明人： Ozaki, Shinji , Morikawa, Juichi , Ishihara, Kiyoshi
IPC分类号： G11B5/127 , G11B5/187
CPC分类号： G11B5/127 , G11B5/1875
摘要： Disclosed is a magnetic head which comprises: a pair of main cores (13a,13b), each being made of a magnetic alloy, having a head gap (11) and forming a magnetic circuit; a pair of sub-cores (12,a, 12b), each being made of a magnetic ferrite having a lower saturation flux density than that of said main cores (13a,13b), and bonded to both sides of said main cores (13a,13); and a head gap forming member (14a,14b) made of a nonmagnetic material, interposed between said main cores (13a,14b) and extending over the entire width of a tape abrasion surface of a head;
wherein the gap length ℓ of the head gap (11) and the wavelength λ of an erase signal satisfy the relation ℓ/λ>1.
摘要翻译：公开了一种磁头，其包括：一对主磁芯（13a，13b），每个主磁芯由磁性合金制成，具有磁头间隙（11）并形成磁路; 一对副铁芯（12，a，12b），每一个由具有比所述主铁芯（13a，13b）较低的饱和磁通密度的磁性铁氧体制成，并且与所述主铁心（13a）的两侧相接合，13）; 和位于所述主芯（13a，14b）之间且在头部的带磨损表面的整个宽度上延伸的由非磁性材料制成的头部间隙形成构件（14a，14b）其中磁头间隙（11）的间隙长度l和擦除信号的波长λ满足关系l 1> 1。

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