发明名称 |
Audio tape cassette, audio tape and production method of the same |
摘要 |
An audio tape cassette having a magnetic tape which is wound around a hub, a cassette shell and guiding parts which comprises a polypropylene resin including inorganic particles "A" dispersed in the tape cassette, wherein the magnetic tape has a back coating layer containing a polyester resin and inorganic particles "B" which have a hardness of not larger than that of the inorganic particles "A", and the magnetic tape has a CP value which is not larger than 1000 mu m.
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申请公布号 |
US5357391(A) |
申请公布日期 |
1994.10.18 |
申请号 |
US19920841483 |
申请日期 |
1992.02.26 |
申请人 |
HITACHI MAXELL, LTD. |
发明人 |
KATSUTA, YOSHIHARU;SATO, KOUZABURO;SAKAMOTO, YUKI;TAKAHIRA, YOSHIYUKI;YAMASAKI, YASUO |
分类号 |
B29C69/00;B29K23/00;B29K67/00;B29K105/16;B29L31/34;C09D5/23;C09D7/12;C09D167/00;G11B5/73;G11B5/733;G11B5/735;G11B23/04;G11B23/087;G11B23/113;(IPC1-7):G11B5/704 |
主分类号 |
B29C69/00 |
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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