发明名称 |
MAGNETISCHES AUFZEICHNUNGSMEDIUM |
摘要 |
A magnetic recording medium having a magnetic layer on one surface of a nonmagnetic support and a back coat layer on the other surface, wherein the back coat layer contains two kinds of carbon black having different average particle sizes and a binder containing two kinds of copolymer. One of the copolymers is copolymer A comprising vinyl chloride, alkylcarboxylic acid/vinyl ester and vinyl alcohol and having an average degree of polymerisation of 300 to 600, and the other is copolymer B further containing an amino group and having an average degree of polymerisation of 200 to 800. The present invention accomplishes a magnetic recording medium having a back coat layer having an excellent surface property, high electromagnetic conversion characteristics, high travel stability and high travel durability. |
申请公布号 |
DE69427011(T2) |
申请公布日期 |
2001.11.15 |
申请号 |
DE1994627011T |
申请日期 |
1994.04.27 |
申请人 |
TDK CORP., TOKIO/TOKYO |
发明人 |
KUROSE, SHIGEO;HONJO, YOSHIHIRO;SOMIYA, AKIRA |
分类号 |
C08F214/06;C08F16/02;C08F214/00;C08F216/06;C09D5/23;C09D127/04;C09D127/06;C09D129/04;C09D131/02;G11B5/73;G11B5/735;(IPC1-7):G11B5/735;G11B5/64 |
主分类号 |
C08F214/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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