Magnetic media patterning via contact printing utilizing stamper having magnetic pattern formed in non-magnetic substrate
US7218465B1 · kind B1 · utility
11Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 4, 2003 |
| Grant date | May 15, 2007 |
| Priority date | — |
| Expiry date | May 29, 2024 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/32
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A stamper/imprinter for use in forming a magnetic transition pattern in a magnetic material by means of contact printing, comprising: (a) a non-magnetic substrate having a major surface comprising a patterned plurality of spaced-apart recesses with a plurality of non-recessed areas therebetween, the patterned plurality of recesses corresponding to the magnetic transition pattern to be formed in the magnetic material; and (b) unidirectionally permanently magnetized material filling each of the plurality of recesses and having exposed surfaces substantially coplanar with the plurality of non-recessed areas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.