Method of recycling disk recording medium and apparatus for recovering metal reflective film
US6435249B1 · kind B1 · utility
10Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2000 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Mar 28, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T156/1972
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A method of recycling a disk recording medium includes the steps of retaining the disk recording medium in a liquid medium, the disk recording medium having a layered structure including a substrate, a dye layer, a reflective film, and a protective layer; radiating ultrasonic waves onto the disk recording medium such that the substrate and the reflective film are separated from each other: and bringing a solution into contact with the substrate separated from the reflective film such that the dye layer is separated from the substrate in order to recover the substrate, the solution dissolving the dye layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.