Magnetic printing system for thin recording media
US6885513B1 · kind B1 · utility
Inventor
Key dates
| Filing date | Dec 24, 2002 |
| Grant date | Apr 26, 2005 |
| Priority date | — |
| Expiry date | Dec 24, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/865
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A system and method for incrementally recording blocks of data such as servo information on magnetic media such as hard disks, flexible disks or tapes. The system comprises a master element with permeable features configured according to the block of data and corresponding to a small fraction of the area of the medium. A predetermined portion of the medium is advanced and brought in proximity to the master element. An electromagnet applies a localized field to copy the data to the selected portion of the medium. The field of the electromagnet is decreased before the next predetermined portion of the medium is advanced thereby avoiding damage to previously recorded data.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.