发明授权
- 专利标题: Longitudinal magnetic recording medium exhibiting various coercivitiy relationships
- 专利标题(中): 纵向磁记录介质表现出各种强度关系
-
申请号: US117330申请日: 1993-09-07
-
公开(公告)号: US5443879A公开(公告)日: 1995-08-22
- 发明人: Naoki Kodama , Hiroyuki Suzuki
- 申请人: Naoki Kodama , Hiroyuki Suzuki
- 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: JPX4-240585 19920909
- 主分类号: C09D5/23
- IPC分类号: C09D5/23 ; G11B5/64 ; G11B5/65 ; G11B5/70 ; G11B5/73 ; G11B5/84 ; B32B3/02 ; G11B5/66
摘要:
A longitudinal magnetic recording medium with a good overwrite property and a small medium noise is identified by a CRP value, which is defined byCRP=[H.sub.c (R).times.H.sub.c (P)]/[H.sub.c (C)].sup.2where H.sub.c (C) is a coercive force in the recording direction, H.sub.c (R) is a coercive force in the medium plane in a direction perpendicular to the recording direction, and H.sub.c (P) is a coercive force in the direction of medium thickness. The magnetic recording medium can be a disk with a magnetic recording layer formed by physical vapor deposition or spin coating.
公开/授权文献
- USD433775S Prisoner leg restraint 公开/授权日:2000-11-14
信息查询
IPC分类: