Patent · US Expired

Optical storage disk blank and method for manufacturing the disk blank

US6447870B1 · kind B1 · utility

1Cited by

7References

20Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Herbert Beck · Arnstorf, DE
Gerhard Schulz · Ludwigshafen, DE

Key dates

Filing date	Mar 23, 2000
Grant date	Sep 10, 2002
Priority date	—
Expiry date	Mar 23, 2020

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/21
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

Method for manufacturing an optically readable digital storage disk having an arbitrary edge contour from a CD-R disk blank, as well as a CD-R disk blank suitable for the manufacture of a storage disk, starts with a blank having a plastic disk that is provided with a reflective layer on the side opposite a scanning side. The reflective layer, which is connected with the plastic disk along a first line, is welded with the plastic disk along an arbitrarily shaped second line that is closed on itself. Afterwards, the storage disk is cut from the CD-R disk blank along a third line that corresponds to the edge contour.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.