Polishing of the rear surface of a stamper for optical disk repr

Details Polishing of the rear surface of a stamper for optical disk repr Polishing of the rear surface of a stamper for optical disk repr

1992-01-10

1993-05-11

Rachuba, M.

Abrasive tool making process, material, or composition

Impregnating or coating an abrasive tool

51328, 51141, B24B 100

Patent

active

052090272

ABSTRACT:
The rear surface of a stamper for use in the manufacture of optical disks should be polished to precision. A length of abrasive tape is fed across the stamper in pressure contact with the rear surface of the stamper through a pressure roller having a rubber sleeve with a hardness of up to 80 degrees as measured according to ASTM D 2240 type A while the stamper is rotating.

REFERENCES:
patent: 2977725 (1961-04-01), Simendinger
patent: 4930259 (1990-06-01), Kobylenski et al.

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