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    • 3. 发明授权
    • Magnetic recording head and magnetic recording device
    • 磁记录头和磁记录装置
    • US06687195B2
    • 2004-02-03
    • US10014311
    • 2001-12-11
    • Shintaro MiyanishiKunio KojimaHiroyuki KatayamaHiroshi Fuji
    • Shintaro MiyanishiKunio KojimaHiroyuki KatayamaHiroshi Fuji
    • G11B1100
    • G11B5/488G11B5/127G11B5/17G11B5/29G11B5/3103G11B13/045G11B2005/0002G11B2005/0005G11B2005/0021
    • A light emitting device for focusing a laser beam without adopting an optical lens system is provided, as well as a composite magnetic recording head and a magnetic recording device, which realize a smaller laser spot diameter and a sharp magnetic field distribution, whereby an optical-assisted high density magnetic recording can be realized, and which also realize a simplified head structure, and improvements in productivity and costs. The composite magnetic recording head is prepared by integrally forming a magnetic coil layer for use in magnetic recording at around the center of the surface-emitting laser aperture, and further, a shielding plate is formed at the center of the laser aperture. As a result, a laser beam can be focused on the irradiation surface of the magnetic recording medium at portion right below the shielding member so as to locally heat the irradiated portion, and further a magnetic field for magnetic recording is applied in the laser heated portion, thereby realizing a high density magnetic recording.
    • 提供了一种不采用光学透镜系统来聚焦激光束的发光装置,以及实现较小的激光光斑直径和尖锐的磁场分布的复合磁记录头和磁记录装置, 可以实现辅助的高密度磁记录,并且还实现了简化的头部结构,并且提高了生产率和成本。 复合磁记录头通过在表面发射激光器孔的中心周围整体地形成用于磁记录的磁性线圈层,并且还在激光孔的中心形成遮蔽板。 结果,可以将激光束聚焦在屏蔽部件正下方的部分的磁记录介质的照射表面上,以便局部加热照射部分,并且在激光加热部分中进一步施加用于磁记录的磁场 ,从而实现高密度磁记录。
    • 4. 发明申请
    • Electomagnetic field generating element, information recording/reproducing head and information recording/reproducing apparatus
    • 电磁场产生元件,信息记录/再现头和信息记录/重放装置
    • US20090106783A1
    • 2009-04-23
    • US12316592
    • 2008-12-12
    • Shintaro MiyanishiNaoyasu IketaniKunio Kojima
    • Shintaro MiyanishiNaoyasu IketaniKunio Kojima
    • G11B11/00G11B7/08
    • G11B11/10536G11B5/1278G11B5/314G11B7/1387G11B11/10541G11B11/1058G11B2005/0002G11B2005/0021
    • The present invention provides an electromagnetic field generating element, an information recording/reproducing head, and an information recording/reproducing apparatus. The electromagnetic field generating element makes it possible to restrain magnetic field attenuation or magnetic field delay in a high frequency recording/reproducing head for use in thermally assisted magnetic field recording/reproduction using a near field. The information recording/reproducing head and the information recording/reproducing apparatus can carry out high frequency magnetic recording/reproducing.The electromagnetic field generating element of the present invention includes: (i) a substrate, (ii) conductors each provided on the substrate and each serving as a supporting section, (iii) a plate-like-shaped conductor provided on the conductors and (iv) a semiconductor laser element provided on the substrate. The semiconductor laser element irradiated, to the plate-like-shaped conductor, laser light substantially parallel to an extending flat surface of the plate-like-shaped conductor. This causes generation of the near field in the plate-like-shaped conductor. Moreover, a magnetic field is generated by supplying a current to the plate-like-shaped conductor.
    • 本发明提供一种电磁场产生元件,信息记录/再现头和信息记录/再现装置。 电磁场产生元件使得可以抑制在使用近场的热辅助磁场记录/再现中使用的高频记录/再现头中的磁场衰减或磁场延迟。 信息记录/再现头和信息记录/再现装置可以执行高频磁记录/再现。 本发明的电磁场产生元件包括:(i)基板,(ii)各自设置在基板上并各自用作支撑部分的导体,(iii)设置在导体上的板状导体和( iv)设置在基板上的半导体激光元件。 半导体激光元件对板状导体照射基本上平行于板状导体的延伸平坦表面的激光。 这导致板状导体中的近场的产生。 此外,通过向板状导体供给电流来产生磁场。
    • 5. 发明申请
    • ELECTROMAGNETIC FIELD DETECTING ELEMENT AND DEVICE USING SAME
    • 电磁场检测元件及使用相同的器件
    • US20090296258A1
    • 2009-12-03
    • US12067974
    • 2006-09-25
    • Shintaro MiyanishiYasushi OgimotoYoshiteru MurakamiKunio Kojima
    • Shintaro MiyanishiYasushi OgimotoYoshiteru MurakamiKunio Kojima
    • G11B21/02G01R29/08G11B5/127
    • G11B5/3909B82Y10/00B82Y25/00G01R29/12G01R33/09G11B5/3993H01F10/20H01F10/24
    • An electromagnetic field detecting element 10 includes a lamination of three insulation layers 2, 3, and 4. The dielectric breakdown strength of the insulation layer 3 is greater than the dielectric breakdown strengths of insulation layers 2 and 4. The three insulation layers 2, 3, and 4 are disposed between a pair of electrodes 5 and 6. Boundaries 7 and 8 on both ends of an overlapping region of the opposing surfaces 5a and 6a in a Z direction are apart from the insulation layer 3 by thicknesses t1 and t3 of the insulation layers 2 and 4, respectively. Between the pair of electrodes 5 and 6, ballistic current paths interposing therebetween the insulation layer 3 are formed by applying, between the pair of electrodes 5 and 6, an electric field having a magnitude which causes dielectric breakdown in the insulation layers 2 and 4 while causing no dielectric breakdown in the insulation layer 3. Thus, it is possible to perform at a room temperature a highly efficient electromagnetic field detection utilizing AB effect or AC effect.
    • 电磁场检测元件10包括三个绝缘层2,3和4的叠层。绝缘层3的绝缘击穿强度大于绝缘层2和4的绝缘击穿强度。三个绝缘层2,3 和4设置在一对电极5和6之间。相对表面5a和6a在Z方向上的重叠区域的两端上的边界7和8与绝缘层3分离,厚度为t1和t3 绝缘层2和4。 在一对电极5和6之间,通过在一对电极5和6之间施加具有导致绝缘层2和4中的电介质击穿的大小的电场而形成绝缘层3之间插入的防弹电流路径,同时 不会在绝缘层3中产生介电击穿。因此,可以在室温下进行利用AB效应或AC效应的高效电磁场检测。
    • 7. 发明申请
    • Electromagnetic field generating element, information recording/reproducing head, and information recording/reproducing apparatus
    • 电磁场产生元件,信息记录/再现头和信息记录/再现装置
    • US20060075417A1
    • 2006-04-06
    • US11238024
    • 2005-09-27
    • Shintaro MiyanishiNaoyasu IketaniKunio Kojima
    • Shintaro MiyanishiNaoyasu IketaniKunio Kojima
    • G11B11/00G11B7/08G11B7/085G11B7/09
    • G11B11/10536G11B5/1278G11B5/314G11B7/1387G11B11/10541G11B11/1058G11B2005/0002G11B2005/0021
    • The present invention provides an electromagnetic field generating element, an information recording/reproducing head, and an information recording/reproducing apparatus. The electromagnetic field generating element makes it possible to restrain magnetic field attenuation or magnetic field delay in a high frequency recording/reproducing head for use in thermally assisted magnetic field recording/reproduction using a near field. The information recording/reproducing head and the information recording/reproducing apparatus can carry out high frequency magnetic recording/reproducing. The electromagnetic field generating element of the present invention includes: (i) a substrate, (ii) conductors each provided on the substrate and each serving as a supporting section, (iii) a plate-like-shaped conductor provided on the conductors and (iv) a semiconductor laser element provided on the substrate. The semiconductor laser element irradiated, to the plate-like-shaped conductor, laser light substantially parallel to an extending flat surface of the plate-like-shaped conductor. This causes generation of the near field in the plate-like-shaped conductor. Moreover, a magnetic field is generated by supplying a current to the plate-like-shaped conductor.
    • 本发明提供一种电磁场产生元件,信息记录/再现头和信息记录/再现装置。 电磁场产生元件使得可以抑制在使用近场的热辅助磁场记录/再现中使用的高频记录/再现头中的磁场衰减或磁场延迟。 信息记录/再现头和信息记录/再现装置可以执行高频磁记录/再现。 本发明的电磁场产生元件包括:(i)基板,(ii)各自设置在基板上并各自用作支撑部分的导体,(iii)设置在导体上的板状导体和( iv)设置在基板上的半导体激光元件。 半导体激光元件对板状导体照射基本上平行于板状导体的延伸平坦表面的激光。 这导致板状导体中的近场的产生。 此外,通过向板状导体供给电流来产生磁场。