Production of magnetic recording media

Details Production of magnetic recording media Production of magnetic recording media

1988-08-05

1990-02-13

Powell, William A.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156646, 156656, 156664, 2041922, 20419232, 134 1, 427131, 427132, 428611, 428928, 360135, C23F 100, B44C 122, C03C 1500, C03C 2506

Patent

active

049003976

ABSTRACT:
Magnetic recording media essentially consisting of a disk-shaped aluminum substrate, a nonmagnetic (Ni-P) lower film, a chromium-containing intermediate film and a ferromagnetic metal film are produced by a process in which the surface of the (Ni-P) lower film is cleaned by RF sputter etching and then oxidized.

REFERENCES:
patent: 4552820 (1985-11-01), Lin et al.
patent: 4629660 (1986-12-01), Sagoi et al.
patent: 4659605 (1987-04-01), Malik et al.
patent: 4698251 (1987-10-01), Fukuda et al.
patent: 4786564 (1988-11-01), Chen et al.

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