Base plate for recording disc and a method for its manufacture

Details Base plate for recording disc and a method for its manufacture Base plate for recording disc and a method for its manufacture

1990-01-09

1992-07-21

Ryan, Patrick J.

Adhesive bonding and miscellaneous chemical manufacture

Delaminating processes adapted for specified product

Delaminating in preparation for post processing recycling step

156654, 156663, 156665, 428 64, 428 65, 428694, 428913, B44C 122

Patent

active

051319772

ABSTRACT:
Herein disclosed is a method for manufacturing a base plate for a recording disc, which comprises steps of polishing the surface of the base plate of glass or aluminum, thereafter dispersing uniformly micro-crystals on the polished surface to form a portion where the micro-crystals are in contact with said polished surface, and subjecting the base plate to etching treatment with an etching agent in a gas phase or a liquid phase. Also disclosed is a base plate for a recording disc, which is obtained by uniformly dispersing micro-crystals on the surface of the base plate and subjecting the same to etching treatment, said base plate having very fine convexities and concavities on its surface.

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