Memory disc substrate with defect free surface

Details Memory disc substrate with defect free surface Memory disc substrate with defect free surface

1998-07-31

1999-11-30

Beck, Shrive

Coating processes

Immersion or partial immersion

Inorganic base

427131, 4274301, 65 36, 65 45, 65 608, B05D 118, C03B 2320

Patent

active

059939141

ABSTRACT:
The present invention is directed to a defect-free magnetic memory disc substrate. In particular, it is directed to a composite alumina-based, glass-coated, article with a defect free surface. Several methods for its manufacture including frit bonding, molten glass submersion, and tape formation are disclosed.

REFERENCES:
patent: 3524918 (1970-08-01), Goto
patent: 3862830 (1975-01-01), Stern
patent: 4020234 (1977-04-01), Gardner
patent: 4396682 (1983-08-01), Mohri et al.
patent: 4690846 (1987-09-01), Wada et al.
patent: 4738885 (1988-04-01), Matsumoto
patent: 4808455 (1989-02-01), Wada et al.
patent: 4808463 (1989-02-01), Yoshikatsu et al.
patent: 4816128 (1989-03-01), Wada et al.
patent: 4944786 (1990-07-01), Oda et al.
patent: 4971932 (1990-11-01), Alpha et al.

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