发明名称 |
Manufacture of homogeneous magnetic recording structure |
摘要 |
A new magnetic medium permits magnetic recording either in the longitudinal or the vertical direction. The medium, unlike prior art structures, does not require a nonmagnetic substrate. The medium is a rigid magnetic disk homogeneously prepared from ferric oxide particles and polyethersulfone in ratios and proportions that produce effective and inexpensive magnetic recording media.
|
申请公布号 |
US4459253(A) |
申请公布日期 |
1984.07.10 |
申请号 |
US19820413210 |
申请日期 |
1982.08.30 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
MARCAR, HAIK;TRAEG, HANS |
分类号 |
G11B5/82;C09D5/23;C09D181/00;C09D181/06;G11B5/68;G11B5/842;G11B5/848;(IPC1-7):B02C18/00 |
主分类号 |
G11B5/82 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|