Hitachi, Ltd.

Fumihiko Sawase

Yoshiki Kato

Katsuyoshi Chiba

Teruo Tsunoda

Mitsushi Endo

Masa-aki Imamura

Katuji Itikawa

A method of coating a magnetic disk wherein while rotating a disk held horizontal at a rotational frequency of 5-700 r.p.m., a magnetic coating composition is sprayed onto the upper and lower surfaces of the disk substantially simultaneously, to form coatings thereon, and the disk is further rotated at a raised rotational frequency, to adjust the thicknesses of the coatings. Further, in case of the rotation for adjusting the thicknesses of the coatings, a shield plate and a bottom plate are respectively disposed over and under the disk, or alternatively, shield plates are disposed over and under the disk, whereby the thicknesses of the coatings on both the surfaces of the disk are made uniform.

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Hakone-machi, Japan

Fumihiko Sawase