发明授权
- 专利标题： Substrate for a magnetic recording medium having laser beam absorption characteristic and a magnetic recording medium using the substrate
- 专利标题（中）： 具有激光束吸收特性的磁记录介质的衬底和使用该衬底的磁记录介质
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申请号： US902478申请日： 1997-07-29
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公开(公告)号： US5978189A公开(公告)日： 1999-11-02
- 发明人: Fuyuki Habu
- 申请人： Fuyuki Habu
- 申请人地址： JPX Tokyo
- 专利权人： Asahi Komag Co., Ltd.
- 当前专利权人： Asahi Komag Co., Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX8-201726 19960731; JPX9-163038 19970619
- 主分类号： B23K26/00
- IPC分类号： B23K26/00 ; B23K26/40 ; C03B23/00 ; C03B23/02 ; C03B29/00 ; C03B29/02 ; C03C23/00 ; G11B5/73 ; G11B5/738 ; G11B5/74 ; G11B5/82 ; G11B5/84 ; B05D3/00
摘要：
A substrate for a magnetic recording medium. The substrate is a non-magnetic brittle material having a substantially flat surface on which laser marks having a height in a range of 10-500 .ANG. are formed in a landing zone. The laser marks are formed by irradiating a pulsed laser beam having a wavelength capable of being absorbed in the non-magnetic brittle material within a range of substantially circular form having a waist diameter D .mu.m, and which has a physical property of 0.5
公开/授权文献
- US5240842A Aerosol beam microinjector 公开/授权日：1993-08-31
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