发明授权
- 专利标题： Magnetic head including stepped core and magneto-optical recording device using the same
- 专利标题（中）： 磁头包括阶梯式磁芯和使用其的磁光记录装置
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申请号： US09926548申请日： 2001-11-19
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公开(公告)号： US06510109B2公开(公告)日： 2003-01-21
- 发明人: Takashi Ohmori
- 申请人： Takashi Ohmori
- 优先权： JP2000-081852 20000317
- 主分类号： G11B1100
- IPC分类号： G11B1100
摘要：
A magnetic head for supplying a magnetic field in recording an. information signal to a recording medium is provided. This magnetic head has a substantially. prism-shaped magnetic core portion having a distal end portion cut out to form a step, the magnetic core portion being form so that the cross-sectional area of the distal end portion is smaller than the cross-sectional area of a proximal end portion, and a coil wound on the outer circumferential surface of the magnetic core portion, wherein the length of one side of the distal end portion is not less than 0.3 mm and not more than 0.45 mm, and the length of the other side orthogonal to the one side is not less than 0.4 mm and not more than 0.55 mm.