Coating processes – Magnetic base or coating – Magnetic coating
Patent
1975-06-30
1977-03-29
Cooper, Jack
Coating processes
Magnetic base or coating
Magnetic coating
252 6256, H01F 1002
Patent
active
040150305
ABSTRACT:
A process for stabilizing a ferromagnetic material comprising heat-treating a needle-like ferromagnetic material represented by the formula MO.sub.x wherein M is a ferromagnetic metal ion or a ferromagnetic non-metal ion and another metal ion, and x is the degree of oxidation which ranges from 1.36 to 1.47, and containing at least 0.5 atom % Co, at a temperature of at least about 40.degree. C, and a process for stabilizing a magnetic recording member comprising heat-treating a magnetic recording member produced by providing a ferromagnetic recording layer comprising (a) a ferromagnetic material represented by the formula MO.sub.x wherein M and x are the same as defined above, and containing at least 0.5 atom % Co, and (b) a binder, on a support, at a temperature of at least about 40.degree. C.
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patent: 3075919 (1963-01-01), Gruber et al.
patent: 3374113 (1968-03-01), Chang et al.
patent: 3573980 (1971-04-01), Haller et al.
patent: 3748270 (1973-07-01), Hwang
patent: 3759745 (1973-09-01), Dixon et al.
patent: 3770500 (1973-11-01), Imaoka et al.
Akashi Goro
Kitamoto Tatsuji
Sasazawa Koji
Yamada Yasuyuki
Cooper Jack
Fuji Photo Film Co. , Ltd.
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