Multiple writing process for magnetic bit-patterned media

Details Multiple writing process for magnetic bit-patterned media Multiple writing process for magnetic bit-patterned media

2011-02-01

2011-02-01

Olson, Jason C (Department: 2627)

Dynamic magnetic information storage or retrieval

General recording or reproducing

Signal switching

C360S060000, C360S068000

Reexamination Certificate

active

07880998

ABSTRACT:
Two pass writing system and method for patterned media. In a first step, a write head of a hard disk drive writes with a strong write field. In a second step, a write head of the hard disk drive writes with a weak field. In this manner, magnetic islands of patterned media are written in the first step. In the second step, only those magnetic islands with a low switching field are written.

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