Magnetic recording medium for magnetic encoder

Details Magnetic recording medium for magnetic encoder Magnetic recording medium for magnetic encoder

1988-07-14

1991-07-30

Thibodeau, Paul J.

Stock material or miscellaneous articles

Composite

Of inorganic material

428900, G11B 2300

Patent

active

050359606

ABSTRACT:
A magnetic recording medium for a magnetic encoder which has an alumite magnetic film that magnetic metal is precipitated in pores of porous aluminum oxide film so that the diameter of the pore is 80 to 200 Angstroms and the depth thereof is 3 to 100 microns. Thus, the magnetic recording medium can magnetically record in a high density and can be fabricated inexpensively.

REFERENCES:
patent: 4548682 (1985-10-01), Yoshida et al.
patent: 4563397 (1986-01-01), Ishiguro et al.
patent: 4650708 (1987-03-01), Takahashi
Article Entitled: Magnetic Properties of Anodic Oxide Coatings on Aluminum Containing Electrodeposited Co and Co--Ni, by Satoshi Kawai and Ryuzu Ueda, vol. 122, No. 1, J. Electochem, Soc.: Electrochemical Science and Technology, Jan. 1975, pp. 32-36.

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