• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1479360 Magnetic write and magnetoresistive read head INTERNATIONAL BUSINESS MACHINES CORP 5 Aug 1975 [19 Aug 1974] 32607/75 Heading G5R A combined magnetic write head and magneto-resistive read head which co-operates with a record medium 221 is largely fabricated by layer deposition. The head includes a ferrite shielding base 210, a permalloy layer 211 for shielding the magnetoresistive stripe of the read head, a first layer of dielectric 222 which can be silicon dioxide, a magnetic-resistive stripe 220 comprising a layer 215 of magnetically hard bias material, a high resistivity layer 216 of, e.g. Schott glass and a magnetic-resistive layer 217 of permalloy. Conductors (not shown) of, e.g. copper or gold are then applied to the magnetoresistive stripe followed by deposition of a second layer of dielectric 222 and a second shielding layer 224 or permalloy which also forms one leg of the magnetic write head. Following deposition of a third layer 225 of dielectric, conductors 228 are deposited to provide a multi-turn bifilar winding for the write head followed by the deposition of a fourth layer 225 of dielectric and a third layer 241 of permalloy which forms the second leg of the write head and extends at one edge through a slot formed in the dielectric layer 225 into contact with the permalloy layer 224.
    公开号:SU906396A3
    申请号:SU752163208
    申请日:1975-08-18
    公开日:1982-02-15
    发明作者:Тарас Романкив Любомир
    申请人:Интернэншл Бизнес Машинз Корпорейшн (Инофирма)；
    IPC主号:
    专利说明:

    (54) INTEGRAL COMBUSED 14AGNETIC
    I
    The invention relates to magnetic recording, in particular to integral combination magnetic heads.
    A known integral combined magnetic head containing b film windings, reinforced between magnetic films. The head has a simple design. 3 However, it does not allow for the reproduction of a magnetic recording carrier with sufficiently small terms.
    Also known is an integrated combined magnetic head, which coats the recording film winding placed inside the first dielectric layer, reinforced between the first and second magnetic films, between which the working recording gap is located, and reproducing the magnetoresistive film. This integrated combined magnetic head allows reproduction with a sufficiently small 26 HEAD
    relative speed of movement of the magnetic recording medium j Zj The disadvantage of this integrated combined magnetic head consists in significant crosstalk.
    The purpose of the invention is to reduce crosstalk.
    This is achieved by introducing a magnetic element into the integrated combined magnetic head, consisting of the first magnetic layer and the second magnetic layer adjoining it, which is also conjugated to the second magnetic film through the second dielectric layer inside which the reproducing magnetoresistive film is placed. The thickness of the second magnetic layer is less than the thickness of the first magnetic layer, and the magnetic permeability of the second magnetic layer is greater than the magnetic permeability of the first magnetic layer.
    The drawing shows the proposed integrated combined magnetic head option.
    The integral combined magnetic, the head contains a recording film winding 1, placed inside the first dielectric layer 2, fixed between the first and. the second magnetic films 3 and 4. At the same time between the first and second magnetic films 3 and 4 is the working recording gap. The head also contains a magnetic element consisting of the first magnetic layer 5 and the second magnetic layer 6 conjugated with it. The second magnetic layer 6 is also interfaced with the second magnetic film 4 through the second dielectric layer 7, inside which is reproduced magnetoresistive film 8. The thickness of the second magnetic layer 6 is less than the thickness of the first magnetic layer 5. The magnetic permeability of the second magnetic layer 6 is greater than the magnetic permeability of the first magnetic layer 5.
    In the proposed integrated combination magnetic head, a working recording gap provides for magnetization of the magnetic recording medium in accordance with the recorded signal applied to the recording film winding 1. In this case, the reproducing magnetoresistive film 8 allows simultaneous reproduction of the recording result from the magnetic recording medium.
    The use of the invention makes it possible to significantly reduce crosstalk. The invention can be used for magnetic recording and reproduction of digital information.
    权利要求:
    Claims (2)
    [1]
    1. US patent number 3662122, class. 179-100.2, 09.05.72.
    [2]
    2.Brock G.V., Shelley F.B.Viele L Hagnetoresistive Read / Write Head, Technical Disclosure Bulletin, v. 15, N 4, September 1972, pp. 12061207 (prototype).
    类似技术:
    公开号 | 公开日 | 专利标题
    SU906396A3|1982-02-15|Integrated combination magnetic head
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    JP3000905B2|2000-01-17|Inductive / MR composite magnetic head and method of manufacturing the same
    同族专利:
    公开号 | 公开日
    US3908194A|1975-09-23|
    FR2282689B1|1977-07-22|
    BR7505283A|1976-08-03|
    IT1039310B|1979-12-10|
    SE408494B|1979-06-11|
    JPS5935088B2|1984-08-27|
    CA1039849A|1978-10-03|
    FR2282689A1|1976-03-19|
    YU201775A|1982-02-28|
    GB1479360A|1977-07-13|
    DD121849A5|1976-08-20|
    NL7509732A|1976-02-23|
    JPS5144917A|1976-04-16|
    SE7508178L|1976-02-20|
    DE2527934A1|1976-03-04|
    DE2527934C2|1983-03-31|
    ZA755016B|1977-03-30|
    AU8408975A|1977-02-24|
    BE830432A|1975-10-16|
    JPS5525886A|1980-02-23|
    CH586443A5|1977-03-31|
    NL172894C|1983-11-01|
    ES440136A1|1977-06-01|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US498504A|US3908194A|1974-08-19|1974-08-19|Integrated magnetoresistive read, inductive write, batch fabricated magnetic head|
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