发明授权
- 专利标题: Magnetic recording medium comprising specific backcoat layer
- 专利标题(中): 包含特定背涂层的磁记录介质
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申请号: US128075申请日: 1993-09-29
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公开(公告)号: US5433999A公开(公告)日: 1995-07-18
- 发明人: Yoshiki Goto , Yukihiro Shimasaki , Kazuyoshi Honda , Tatsuaki Ishida , Kiyokazu Tohma , Ryuji Sugita , Yasuhiro Kawawake
- 申请人: Yoshiki Goto , Yukihiro Shimasaki , Kazuyoshi Honda , Tatsuaki Ishida , Kiyokazu Tohma , Ryuji Sugita , Yasuhiro Kawawake
- 申请人地址: JPX Kadoma
- 专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址: JPX Kadoma
- 优先权: JPX2-177710 19900705; JPX2-234885 19900904; JPX3-10639 19910131
- 主分类号: G11B5/73
- IPC分类号: G11B5/73 ; G11B5/735 ; B32B5/16
摘要:
In a magnetic recording medium with a back coat layer including polyurethane having a Tg (glass-transition temperature) below room temperature, isocyanate hardener, carbon powder and inorganic abrasive pigment are formed on a face of a non-magnetic substrate opposite a face covered by a magnetic recording film. Using this back coat layer, improved post contact characteristics and the like are obtained and smooth running conditions under small tensions are realized. Further, the magnetic recording medium causes only a small amount of head wear, and the medium has improved wear resistance.
公开/授权文献
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