Recording medium and recording device
US6370107B1 · kind B1 · utility
28Cited by
15References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 26, 1999 |
| Grant date | Apr 9, 2002 |
| Priority date | — |
| Expiry date | Jan 26, 2019 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S977/932
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A recording disk has a surface provided with guide grooves for controlling the position of a recording head, and recording bits formed in the guide grooves for high-density recording. The recording bits have the shape of a tadpole in a plane. The width Ws of the recording bits is greater than the width Wg of the guide grooves. An AFM probe serving as a recording head travels along the guide grooves without running off the guide grooves. When a tip part of the AFM probe coincides with the recording bit, the tip part drops deep into the guide groove, whereby the recording bit is detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.