Coating processes – Direct application of electrical – magnetic – wave – or... – Magnetic field or force utilized
Reexamination Certificate
2006-02-07
2006-02-07
Parker, Fred J. (Department: 1762)
Coating processes
Direct application of electrical, magnetic, wave, or...
Magnetic field or force utilized
C427S130000, C427S132000
Reexamination Certificate
active
06994895
ABSTRACT:
A method of producing a magnetic recording medium including the steps of preparing alloy particles capable of forming a CuAu type or Cu3Au type ferromagnetic order alloy phase, forming an alloy particle layer on a support using the alloy particles, oxidizing the alloy particles, and annealing the alloy particle layer in a magnetic field under a reducing atmosphere. Also disclosed is a magnetic recording medium produced by the method, that is, a magnetic recording medium including a magnetic layer which contains magnetic particles in a CuAu type or Cu3Au type ferromagnetic order alloy phase and which has a squareness ratio of 0.75 or higher.
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Hattori Yasushi
Waki Koukichi
Fuji Photo Film Co. , Ltd.
Parker Fred J.
Sughrue & Mion, PLLC
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