发明名称 MAGNETISCHES AUFZEICHNUNGSMEDIUM
摘要 <p>A magnetic recording medium is disclosed, in which a magnetic layer is formed on one surface of the non-magnetizable substrate and a back coating layer consisting essentially of a binder and a non-magnetizable pigment is formed on the other surface of the substrate. In the back coating layer, more than 80 weight percent of the binder is a polyurethane resin or a polyester resin having hydrophilic polar groups. The back coating layer also contains carbon black for preventing electrostatic charging and pigments with Mohs hardness higher than 5 for improving durability. The carbon black to the pigments weight ratio is set to be in the range of 95:5 to 60:40.</p>
申请公布号 DE3436262(A1) 申请公布日期 1985.05.02
申请号 DE19843436262 申请日期 1984.10.03
申请人 SONY CORP., TOKIO/TOKYO, JP 发明人 KANEDA, KOJI, DOTHAN, ALA., US;SUGIYAMA, MASAYOSHI, MIYAGI, JP
分类号 C10M107/40;C09D5/23;C09D127/04;C09D127/06;C09D175/00;C09D175/04;C10N40/18;G11B5/73;G11B5/735;(IPC1-7):G11B5/70;B05D5/12;C09D3/64;C09D3/72 主分类号 C10M107/40
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