Glass substrate for magnetic disk and method for manufacturing

Details Glass substrate for magnetic disk and method for manufacturing Glass substrate for magnetic disk and method for manufacturing

2005-05-31

2005-05-31

Resan, Stevan A. (Department: 1773)

Stock material or miscellaneous articles

Structurally defined web or sheet

Continuous and nonuniform or irregular surface on layer or...

C428S065100, C428S426000, C428S690000

Reexamination Certificate

active

06899943

ABSTRACT:
A method of manufacturing a glass substrate for a magnetic disk. The method includes the step of scrub-etching the glass substrate using a pad in the presence of an acid treatment solution. As the acid treatment solution, hydrofluoric acid is used in a range of 0.01 to 1 wt %. The scrub-etching step is performed at temperatures ranging from 5 to 60° C. for 1 second to 300 seconds. The method produces a substrate that is substantially free of asperity.

REFERENCES:
patent: 4670319 (1987-06-01), Katoh et al.
patent: 4833001 (1989-05-01), Kijima et al.
patent: 4985306 (1991-01-01), Morizane et al.
patent: 5494721 (1996-02-01), Nakagawa et al.
patent: 6117220 (2000-09-01), Kodama et al.
patent: 04220367 (1993-11-01), None
patent: 05300044 (1995-06-01), None
patent: 08291352 (1998-05-01), None

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