Method of manufacturing a dual-sided stamper/imprinter, method of simultaneously forming magnetic transition patterns and dual-sided stamper/imprinter
US6805966B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2003 |
| Grant date | Oct 19, 2004 |
| Priority date | — |
| Expiry date | Apr 19, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31678
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A dual-sided stamper/imprinter for simultaneously forming magnetic transition patterns in spaced-apart first and second layers of magnetic material by contact printing comprises a mechanically hard, substantially rigid magnetic material having high saturation magnetization and high permeability and including first and second oppositely facing imprinting surfaces, wherein each of the imprinting surfaced has a topographical pattern formed therein comprising a patterned plurality of spaced-apart recesses with a plurality of non-recessed areas therebetween, each topographical pattern corresponding to a magnetic transition pattern to be formed in a respective layer of magnetic material. Also disclosed is a method for manufacturing dual-sided stampers/imprinters.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.