Method of simultaneously forming magnetic transition...

Details Method of simultaneously forming magnetic transition... Method of simultaneously forming magnetic transition...

2006-05-02

2006-05-02

Tugbang, A. Dexter (Department: 3729)

Metal working

Method of mechanical manufacture

Electrical device making

C029S602100, C029S603010, C029S603030, C029S603050, C029S603120, C360S135000

Reexamination Certificate

active

07036209

ABSTRACT:
A method of simultaneously forming magnetic transition patterns in both side surfaces of a dual-sided magnetic or magneto-optical (MO) recording medium comprises steps of:(a) providing a dual-sided magnetic or MO recording medium having first and second opposing side surfaces;(b) providing a first magnetic stamper/imprinter having a first topographically patterned imprinting surface comprising a plurality of projections and depressions arranged in a first pattern corresponding to a first magnetic transition pattern to be formed in the first side surface;(c) providing a second magnetic stamper/imprinter having a second topographically patterned imprinting surface comprising a plurality of projections and depressions arranged in a second pattern corresponding to a second magnetic transition pattern to be formed in the second side surface, the second magnetic stamper/imprinter being formed from the first magnetic stamper/imprinter in a “mother”/“son” relationship;(d) contacting the first side surface with the first topographically patterned imprinting surface of the first magnetic stamper/imprinter;(e) contacting the second side surface with the second topographically patterned imprinting surface of the second magnetic stamper/imprinter; and(f) simultaneously forming magnetic transition patterns in both side surfaces of the medium by contact printing.

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