发明授权
- 专利标题: Multiple layered thin-film magnetic head for magnetic recording and reproducing apparatus
- 专利标题(中): 用于磁记录和再现装置的多层薄膜磁头
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申请号: US557021申请日: 1990-07-25
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公开(公告)号: US5155646A公开(公告)日: 1992-10-13
- 发明人: Wataru Fujisawa , Shuji Orihara , Takaharu Nishino , Hisanori Yoshimizu
- 申请人: Wataru Fujisawa , Shuji Orihara , Takaharu Nishino , Hisanori Yoshimizu
- 申请人地址: JPX Yokohama
- 专利权人: Victor Company of Japan, Ltd.
- 当前专利权人: Victor Company of Japan, Ltd.
- 当前专利权人地址: JPX Yokohama
- 优先权: JPX1-193469 19890726; JPX1-223470 19890830; JPX1-226152 19890831; JPX1-236076 19890912
- 主分类号: G11B5/31
- IPC分类号: G11B5/31
摘要:
A thin-film magnetic head for magnetic recording and reproducing apparatus includes a lower insulating layer deposited on a substrate and including a lower magnetic core, an intermediate insulating layer deposited on the lower insulating layer and including front and rear intermediate magnetic cores, and an upper insulating layer deposited on the intermediate insulating layer and including an upper magnetic core. The magnetic cores make up a magnetic circuit which has a magnetic gap defined between the lower magnetic core and the front intermediate magnetic core or between the front intermediate magnetic core and the upper magnetic core. A multiturn coil is embedded in the intermediate insulating layer to surround the rear intermediate magnetic core. The lower, intermediate, and upper insulating layers have respective flat surfaces including respective surfaces of the lower, intermediate, and upper magnetic cores. The lower, intermediate, and upper insulating layers are joined to each other through the flat surfaces.
公开/授权文献
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