Method and apparatus for patterning magnetic media by...

Details Method and apparatus for patterning magnetic media by... Method and apparatus for patterning magnetic media by...

2006-05-23

2006-05-23

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

Record copying

Contact transfer

C360S017000

Reexamination Certificate

active

07050248

ABSTRACT:
An apparatus for forming a magnetic transition pattern in a magnetic material by contact printing, comprising:(a) a stamper having an imprinting surface comprising a plurality of projections and depressions arranged according to the magnetic transition pattern, the stamper being formed of at least one high saturation magnetization, high permeability magnetic material;(b) means for supporting a workpiece such that a surface thereof comprised of the magnetic material is in contact with the imprinting surface;(c) magnet means for applying a unidirectional re-alignment magnetic field to the stamper and workpiece to effect selective re-alignment of magnetic domains of portions of the magnetic material facing the depressions of the imprinting surface, such that the pattern of selectively re-aligned magnetic domains forms a pattern replicating the pattern of projections and depressions; and(d) means for applying sufficient pressure to the stamper and workpiece to overcome magnetic attraction between the stamper and the magnet means to thereby maintain full contact therebetween.

REFERENCES:
patent: 5991104 (1999-11-01), Bonyhard
patent: 6086961 (2000-07-01), Bonyhard
patent: 6798590 (2004-09-01), Albrecht et al.
patent: 2002/0159177 (2002-10-01), Aoki et al.
patent: 2003/0184896 (2003-10-01), Ishida et al.
patent: 0915456 (1999-12-01), None

Affiliated with

Also associated with

Rating

Method and apparatus for patterning magnetic media by... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for patterning magnetic media by..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for patterning magnetic media by... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3570108