Recording head and recorder
US7755978B2 · kind B2 · utility
2Cited by
5References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2007 |
| Grant date | Jul 13, 2010 |
| Priority date | — |
| Expiry date | Nov 24, 2027 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B2005/0021
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A recorder has a recording head which uses light for information recording to a recording medium. The recording head has a slider and an optical waveguide. The slider moves relative to the recording medium while floating thereon. The optical waveguide is provided in the slider and has a refractive index difference of 20% or more between a core and a cladding.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.