Substrate for a magnetic disk and process for its production

Details Substrate for a magnetic disk and process for its production Substrate for a magnetic disk and process for its production

1989-09-18

1992-04-28

Robinson, Ellis P.

Stock material or miscellaneous articles

Structurally defined web or sheet

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

205203, 205222, 428156, 428167, 428172, 428195, 428209, 4284722, 428548, 428550, 428457, 428469, 428600, 428601, 428613, 428615, 428650, 428687, 428699, 428702, 428900, 428 64, 427250, 427261, 427304, 4274431, 2041921, B32B 300, C25D 500

Patent

active

051088126

ABSTRACT:
A substrate for a magnetic disk, having fine roughness formed on its surface by subjecting aluminum or an aluminum alloy to anodic oxidation, packing pores in the anodized layer thereby formed, with a material different in the physicochemical properties from the anodized layer, and letting a plating material grow selectively by an epitaxial method.

REFERENCES:
patent: 4650708 (1987-03-01), Takahashi
patent: 4876117 (1989-10-01), Bornstein

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