发明申请
- 专利标题: Electomagnetic field generating element, information recording/reproducing head and information recording/reproducing apparatus
- 专利标题(中): 电磁场产生元件,信息记录/再现头和信息记录/重放装置
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申请号: US12316592申请日: 2008-12-12
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公开(公告)号: US20090106783A1公开(公告)日: 2009-04-23
- 发明人: Shintaro Miyanishi , Naoyasu Iketani , Kunio Kojima
- 申请人: Shintaro Miyanishi , Naoyasu Iketani , Kunio Kojima
- 申请人地址: JP Osaka
- 专利权人: Sharp Kabushiki Kaisha
- 当前专利权人: Sharp Kabushiki Kaisha
- 当前专利权人地址: JP Osaka
- 优先权: JP2004-280670 20040927; JP2004-298735 20041013; JP2005-031149 20050207
- 主分类号: G11B11/00
- IPC分类号: G11B11/00 ; G11B7/08
摘要:
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.