Process for producing magnetic recording medium

Details Process for producing magnetic recording medium Process for producing magnetic recording medium

1985-10-16

1986-08-05

Pianalto, Bernard D.

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

427132, 427251, 427296, H01F 1002

Patent

active

046042938

ABSTRACT:
A process for producing a magnetic recording medium comprising heating a magnetic material evaporation source with at least one scanning electron beam and depositing a vapor of a magnetic material emitted from the magnetic material evaporation source onto a non-magnetic substrate tape or web which is continuously moving in a vacuum atmosphere, the magnetic material evaporation source being disposed substantially parallel to the width direction of the non-magnetic substrate tape or web to form a magnetic thin film thereon, wherein the scanning frequency of the electron beams is about 2wv
Hz or more, in which v m/min is the moving speed of the non-magnetic substrate; w m is the scanning width of the electron beams on said magnetic material evaporation source; and n is the number of the electron beams. The magnetic thin film magnetic recording medium has improved (dB/dH).sub.max and an excellent envelope of reproduced signals.

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