Optical recording medium and manufacturing method of the same
US9552839B2 · kind B2 · utility
2Cited by
0References
12Claims
0Family size
Assignee
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Key dates
| Filing date | Mar 24, 2015 |
| Grant date | Jan 24, 2017 |
| Priority date | — |
| Expiry date | Apr 15, 2035 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/240004
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Provided is an optical recording medium including: two discs, each of which includes a substrate and a plurality of recording layers; and an attachment layer which is provided between the two discs and includes ultraviolet curable resin, wherein thickness of each of the substrates in the two discs is equal to or greater than 0.3 mm and equal to or less than 0.545 mm, wherein transmittance of the two discs is equal to or less than 20%, and wherein inversion rates on both surface sides of the attachment layer are equal or substantially equal to each other, and are equal to or greater than 70%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.