Magnetic recording medium and method for making it

Details Magnetic recording medium and method for making it Magnetic recording medium and method for making it

1990-12-03

1993-01-26

Pianalto, Bernard

Coating processes

Direct application of electrical, magnetic, wave, or...

Plasma

427131, 427132, 427249, 427250, 428 64, 428695, 428900, B05D 306

Patent

active

051821320

ABSTRACT:
In making a magnetic recording medium, a diamond-like carbon film is formed stably with high product efficiency such as 200 .ANG./sec, without occurrence of irregular discharge, and improved still durability and reduced head contamination are achieved by utilizing a.c. plasma discharge or a.c. plasma discharge superimposed by d.c. power and the lubricant film.

REFERENCES:
patent: 4539266 (1985-09-01), Miyazaki
patent: 4645977 (1987-02-01), Kurokawa et al.
patent: 4833032 (1989-05-01), Reese
Japanese Patents Gazette Section CH: Chemical, Week 8539, Derwent Publications Ltd., London GB, Nov. 6, 1985, Class L., p. 42, No. J60157725-A.

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