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    • 3. 发明授权
    • Magnetic head with improved core bonding
    • 磁头与改进的核心结合
    • US5162960A
    • 1992-11-10
    • US613691
    • 1990-11-20
    • Katsumi SakataIkuko SatoTatsuo KumuraToshito IkedaHiroya EguchiHideaki MatsuyamaHideaki Karamon
    • Katsumi SakataIkuko SatoTatsuo KumuraToshito IkedaHiroya EguchiHideaki MatsuyamaHideaki Karamon
    • G11B5/127G11B5/187G11B5/23G11B5/235
    • G11B5/1878G11B5/1276Y10T29/49039
    • The formation of a gap in a magnetic head core or the junction of a thin magnetic film of a metal with an oxide substrate of a magnetic head made of a composite of a thin magnetic film of a metal with an oxide material are conducted by the thermal diffusion between gold layers themselves at a low temperature. Then, chromium or titanium is provided between the gold layer and the junction surface to prevent deterioration of magnetic characteristics and generation of a false gap and, at the same time, to heighten the junction strength. The thermal diffusion between the gold layers themselves is effected at a temperature lower than that of glass fusion to suppress the deterioration of magnetic characteristics, distortion caused by thermal expansion, and diffusion reaction on the interface. The chromium or titanium layer works to maintain function strength between the thin magnetic layer or the oxide substrate and the gold layer.
    • PCT No.PCT / JP90 / 00368 Sec。 371日期1990年11月20日 102(e)1990年11月20日日期PCT 1990年3月19日PCT PCT。 出版物WO90 / 11595 日期1990年10月4日。磁头芯中的间隙或金属的薄磁性膜与磁头的氧化物衬底的接合部的形成,所述磁头由金属的薄磁性膜与 氧化物材料通过金层本身之间的热扩散在低温下进行。 然后,在金层和接合面之间设置铬或钛,以防止磁特性的恶化和假间隙的产生,同时提高结合强度。 金层本身之间的热扩散在比玻璃熔融温度低的温度下进行,以抑制磁特性的劣化,由热膨胀引起的变形和界面上的扩散反应。 铬或钛层用于保持薄磁层或氧化物衬底与金层之间的功能强度。
    • 8. 发明授权
    • Magnetic transducer head with inclined magnetic gap
    • 具有倾斜磁隙的磁性换能器头
    • US4819113A
    • 1989-04-04
    • US713637
    • 1985-03-19
    • Makoto KubotaTatsuo KumuraJunichi SaitoTomio KobayashiHeikichi Sato
    • Makoto KubotaTatsuo KumuraJunichi SaitoTomio KobayashiHeikichi Sato
    • G11B5/127G11B5/187G11B5/147
    • G11B5/1878G11B5/127
    • A magnetic transducer head in which the magnetic core elements of ferromagnetic oxides are sliced obliquely across the junction surface of the core elements, ferromagnetic metal thin films are formed on the resulting inclined surfaces by employing a physical vapor deposition, and the core elements are placed with the respective ferromagnetic metal thin films abutting to each other for defining a magnetic gap therebetween, wherein the improvement consists in that said inclined surfaces with the ferromagnetic metal thin films formed thereon are inclined at a preset angle with the magnetic gap forming surface, in that non-magnetic films having high-hardness are interposed between the ferromagnetic oxide and the ferromagnetic metal thin films, and in that said ferromagnetic metal thin films and the oxide glass fillers are provided on the tape abutment surface by the intermediary of the non-magnetic film having high-hardness.The provision of the non-magnetic film having high-hardness between the ferromagnetic oxide and the ferromagnetic metal thin film is effective to inhibit the reaction otherwise occurring between the oxide and the films, while positively preventing the formation of the boundary layer with inferior magnetic properties.Likewise, the provision of the non-magnetic film having high-hardness between the ferromagnetic metal thin film and the oxide glass is effective to prevent the erosion of the film by the molten glass, while also improving the molten glass fluidity.It should be noted that the non-magnetic films having high-hardness may be provided on the interface only between the core elements and the metal thin films or on the interface only between the metal thin films and the oxide glass.
    • 磁性氧化物的磁芯元件倾斜跨越芯元件的接合表面切割的磁性传感器头,通过使用物理气相沉积在所得到的倾斜表面上形成强磁性金属薄膜,并将核心元件放置在 相应的铁磁性金属薄膜彼此邻接以限定它们之间的磁隙,其中的改进在于,其上形成有强磁性金属薄膜的所述倾斜表面以与磁隙形成表面成预定角度倾斜, 具有高硬度的磁性膜介于铁磁性氧化物和强磁性金属薄膜之间,并且所述强磁性金属薄膜和氧化物玻璃填料通过非磁性膜的介质提供在带邻接表面上,所述非磁性膜具有 高硬度。 在铁磁性氧化物和强磁性金属薄膜之间提供具有高硬度的非磁性膜有效地抑制氧化物和膜之间发生的反应,同时积极地防止形成具有较差磁性的边界层 。 同样地,在强磁性金属薄膜和氧化物玻璃之间提供具有高硬度的非磁性薄膜也有效地防止了熔融玻璃对膜的侵蚀,同时也提高了熔融玻璃的流动性。 应当注意,具有高硬度的非磁性膜可以仅在芯元件和金属薄膜之间的界面上或仅在金属薄膜和氧化物玻璃之间的界面上提供。