- 专利标题: Magnetic recording medium having narrow pulse width characteristics
-
申请号: US11089067申请日: 2005-03-24
-
公开(公告)号: US20050181241A1公开(公告)日: 2005-08-18
- 发明人: Bruce Edwards
- 申请人: Bruce Edwards
- 主分类号: G11B5/70
- IPC分类号: G11B5/70 ; G11B5/702 ; G11B5/714 ; G11B5/17
摘要:
A dual-layer magnetic recording medium including a non-magnetic substrate having a front side and a back side, a lower support layer formed over the front side and a magnetic upper recording layer formed over the lower layer, wherein the magnetic layer contains a volume concentration of at least about 35% of a magnetic metallic particulate pigment having a coercivity of at least about 2000 Oersteds (Oe), and a binder system for the pigment. The magnetic recording medium exhibits an orientation ratio greater than 2.0, a pulsewidth (PW50) value of less than about 500 nm, and a remanence-thickness product, Mr*t, of less than about 5.0 memu/cm2.
公开/授权文献
信息查询
IPC分类: