Optical-recording medium, method for producing the same, and method for recording and reproducing optical-recording
US7636289B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2005 |
| Grant date | Dec 22, 2009 |
| Priority date | — |
| Expiry date | Apr 26, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2007/25715
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An object of the invention is to provide an optical-recording medium in which problems such as cross-write, i.e., signals are recorded wrongly on adjacent tracks, and cross-erase i.e., recording signals on adjacent tracks are erased wrongly, can be solved, and which enables high-density recording; a method for producing the optical-recording medium; and a method for recording and reproducing an optical-recording medium. To achieve this object, the optical-recording medium includes a substrate, an optical-absorption layer which absorbs light and generates heat on or above the substrate, a recording layer, and record-blocking portions which block recording on the recording layer, in which the record-blocking portions are disposed between the recording layer and the optical-absorption layer, and between adjacent tracks, and recording marks are formed on the recording layer by the optical absorption function of the optical-absorption layer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.