发明授权
- 专利标题: Magnetic recording medium
- 专利标题(中): 磁记录介质
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申请号: US784425申请日: 1985-10-04
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公开(公告)号: US4693929A公开(公告)日: 1987-09-15
- 发明人: Katsumi Ryoke , Masatoshi Takahashi , Takashi Yoneyama , Yasuo Nishikawa , Eiichi Tadokoro
- 申请人: Katsumi Ryoke , Masatoshi Takahashi , Takashi Yoneyama , Yasuo Nishikawa , Eiichi Tadokoro
- 申请人地址: JPX Kanagawa
- 专利权人: Fuji Photo Film Co., Ltd.
- 当前专利权人: Fuji Photo Film Co., Ltd.
- 当前专利权人地址: JPX Kanagawa
- 优先权: JPX59-208483 19841004
- 主分类号: C09D5/23
- IPC分类号: C09D5/23 ; C09D101/18 ; C09D127/04 ; C09D127/06 ; C09D163/00 ; C09D175/00 ; C09D175/04 ; G11B5/73 ; G11B5/735 ; G11B5/70 ; G11B5/71
摘要:
A magnetic recording medium comprising a magnetic layer coated on one side of a non-magnetic support and a backing layer coated on the opposite side of the non-magnetic support, wherein the backing layer comprises non-magnetic particles, a binder and silicone having a viscosity of from 1 to 50 CS (centistokes) at 25.degree. C. in an amount of from 0.01 to 3 wt. % based on the non-magnetic particles, wherein the non-magnetic particles contain carbon black in an amount of at least 50 wt. % based on the total amount of the non-magnetic particles, and wherein 25 wt. % or more of the carbon black has an average particle size of from 150 to 1,000 m.mu..
公开/授权文献
- US5784434A Digital intra-oral imaging system for dental radiography 公开/授权日:1998-07-21
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