Coating processes – Magnetic base or coating – Magnetic coating
Patent
1980-11-28
1982-10-12
Pianalto, Bernard D.
Coating processes
Magnetic base or coating
Magnetic coating
427128, 427425, B05D 512
Patent
active
043539378
ABSTRACT:
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.
REFERENCES:
patent: 4133911 (1979-01-01), Koester et al.
Chiba Katsuyoshi
Endo Mitsushi
Imamura Masa-aki
Itikawa Katuji
Kato Yoshiki
Hitachi , Ltd.
Pianalto Bernard D.
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