Methods for improving printed media self-servo writing

Details Methods for improving printed media self-servo writing Methods for improving printed media self-servo writing

2006-05-30

2006-05-30

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the head

Reexamination Certificate

active

07054092

ABSTRACT:
Methods in accordance with the present invention can be applied to improve printed media self-servo writing by reducing PES noise and SAM error-rate at an outer diameter of a reference surface of a disk. In one such method, a template pattern having zig-bursts within a servo wedge describing radial positioning that are replaced by pulses at an inner diameter of the reference surface such that head skew at the inner diameter is a limiting factor for pattern frequency at the inner diameter, can be printed or otherwise written to a reference surface of the disk. A hard disk drive can then be assembled with the disk and a servo pattern can be written based on the template pattern for each surface of the disk. Other features, aspects, and objects of the invention can be obtained from a review of the specification, the figures, and the claims.

REFERENCES:
patent: 4354208 (1982-10-01), Maury
patent: 5862005 (1999-01-01), Leis
patent: 6069764 (2000-05-01), Morris
patent: 6304407 (2001-10-01), Baker
patent: 6519107 (2003-02-01), Ehrlich et al.
patent: 6704156 (2004-03-01), Baker et al.
patent: 6738205 (2004-05-01), Moran et al.
patent: 6751042 (2004-06-01), Bi et al.
patent: 6771443 (2004-08-01), Szita et al.
patent: 6785084 (2004-08-01), Szita
patent: 2001/0043428 (2001-11-01), Morris et al.
Saito et al., “Optimization of a Magnetic Printing Process by Computer Simulation,” inIEEE Transactions on Magnetics, vol. 37, No. 4, Jul. 2001, pp. 1389-1392.
Ishida et al., “Demodulation of Servo Tracking Signals Printed with a Lithographically Patterned Master Disk,” inIEEE Transactions on Magnetics, vol. 37, No. 4, Jul. 2001, pp. 1412-1415.
Ishida et al., “Printed Media Technology for an Effective and Inexpensive Servo Track Writing of HDDs,” inIEEE Transactions on Magnetics, vol. 37, No. 4, Jul. 2001, pp. 1875-1877.

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