Colored digital versatile disks
US6475588B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 7, 2001 |
| Grant date | Nov 5, 2002 |
| Priority date | — |
| Expiry date | Aug 7, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/21
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A colored optical disk and method for making the same are disclosed herein. The method comprises: disposing a first semi-reflective data layer on a first resin layer, wherein the first resin layer has light transmission at a desired reading wavelength of greater than about 60%; disposing a top side of a first fully reflective data layer on a side of said first semi-reflective data layer opposite said first resin layer, wherein reflectivity of the first fully reflective data layer and the first semi-reflective data layer is individually about 18 to about 30%, and wherein a difference in the reflectivity between the first fully reflective data layer and the first semi-reflective data layer is less than about 5%; disposing a separating layer between said first fully reflective data layer and said first semi-reflective data layer; disposing a second resin layer on a bottom side of said first fully reflective data layer; and adding color to at least a portion of the optical disk.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.