A magnetic recording medium has a cobalt-based first magnetic layer (2) and a cobalt-based second magnetic layer (3) which are formed on a substrate (1) of high polymer by vacuum evaporation. In order to have a high reproducing output and a high S/N ratio, the first magnetic layer has high oxygen density area which is arranged at a vicinity of the second magnetic layer, and the second magnetic layer has high oxygen density area which is arranged at a vicinity of the first magnetic layer. <IMAGE>
申请公布号
DE69313246(T2)
申请公布日期
1998.01.29
申请号
DE1993613246T
申请日期
1993.11.11
申请人
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD., KADOMA, OSAKA, JP
发明人
SUGITA, RYUJI, HIRAKATA CITY 573, JP;TOHMA, KIYOKAZU, HIRAKATA CITY 573, JP;ISHIDA, TATSUAKI, SAKAI CITY 591, JP;BAN, YASUAKI, NEYAGAWA CITY 572, JP