Method for replicating magnetic patterns on hard disk media

Details Method for replicating magnetic patterns on hard disk media Method for replicating magnetic patterns on hard disk media

2005-05-24

2005-05-24

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

Record copying

C360S016000, C360S017000, C360S048000, C360S135000, C428S064200, C428S690000, C369S277000, C369S280000, C369S285000, C216S041000, C216S066000, C216S067000

Reexamination Certificate

active

06898031

ABSTRACT:
A system and method for replicating magnetic patterns on hard disk media includes a mask located over or above a magnetic recording layer. The recording layer may include a single, dual, or multi-layer recording layer. A pattern is or has been formed in the mask, where the pattern defines the recordable regions and the non-recordable regions to be created in one or more layers within the recording layer. Portions of the recording layer are then exposed. An etch may then be performed to create grooves within one or more layers in the exposed regions of the recording layer. The magnetic properties of at least one layer in the exposed portions of the recording layer are then altered in order to create recordable or non-recordable regions. The mask is then removed from the recording layer.

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