发明名称 |
MAGNETIC RECORDING MEDIUM |
摘要 |
PROBLEM TO BE SOLVED: To provide a magnetic recording medium which is capable of making the recording density higher than that of the conventional magnetic recording medium of a vapor deposition type and has good electromagnetic conversion characteristics over a frequency band of a wide range. SOLUTION: This magnetic recording medium includes a base 2 and a magnetic layer 3 which is disposed on the front surface side of this base 2 by depositing >=1 kind of metallic element by evaporation on this side. In such a case, the transmissivity of the magnetic layer 3 at a wavelength 800 nm is 100×e<(-25t)> to 100×e<(-19t)> (%) when the film thickness of the magnetic layer is defined as t (μm). The transmissivity of the magnetic layer 3 at a wavelength 450 nm is 100×e<(-33t)> to 100×e<-36t)> (%).
|
申请公布号 |
JPH11154317(A) |
申请公布日期 |
1999.06.08 |
申请号 |
JP19970320079 |
申请日期 |
1997.11.20 |
申请人 |
KAO CORP |
发明人 |
NAGAI SATOSHI;KITAORI NORIYUKI;YOSHIDA OSAMU;ENDO KATSUMI;YAMAZAKI TOSHIO;MIYAMURA TAKESHI |
分类号 |
G11B5/66;G11B5/64;G11B5/65;(IPC1-7):G11B5/66 |
主分类号 |
G11B5/66 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|