发明授权
- 专利标题： Hard disk magnetic recording medium comprising magnetic powder and a binder and having a specified magnetic layer thickness and surface roughness
- 专利标题（中）： 包含磁粉和粘合剂并具有规定的磁性层厚度和表面粗糙度的硬盘磁记录介质
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申请号： US293177申请日： 1989-01-03
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公开(公告)号： US5180616A公开(公告)日： 1993-01-19
- 发明人: Hajime Fukke , Motoo Akagi , Iwao Matsuyama , Masayuki Katsumoto , Hitoshi Inoue , Naoki Kodama , Yasutaro Uesaka
- 申请人： Hajime Fukke , Motoo Akagi , Iwao Matsuyama , Masayuki Katsumoto , Hitoshi Inoue , Naoki Kodama , Yasutaro Uesaka
- 申请人地址： JPX Tokyo
- 专利权人： Hitachi, Ltd.
- 当前专利权人： Hitachi, Ltd.
- 当前专利权人地址： JPX Tokyo
- 优先权： JPX61-144935 19860623; JPX61-269652 19861114; JPX63-14441 19880127; JPX63-241101 19880928
- 主分类号： C09D5/00
- IPC分类号： C09D5/00 ; G11B5/70 ; G11B5/706 ; G11B5/712
摘要：
A method for manufacturing a magnetic paint by mixing a resin composition powder as a dispersing binder for a magnetic powder with the magnetic powder, or together with a filler, and grinding the mixture under a high shear stress is disclosed. A magnetic recording medium such as a magnetic disk, etc., prepared by using the magnetic paint, can have a magnetic coating film having a substantially uniform film thickness of not more than 0.9 .mu.m and a surface roughness of not more than 0.05 .mu.m Ra before surface finishing.
公开/授权文献
- US6084914A Video coding device and video decoding device 公开/授权日：2000-07-04