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IEEE Transactions on Magnetics
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A self-servowrite clocking process

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Abstract

A low-cost clocking system was described to develop a high-speed process for servowriting hard-disk assemblies (HDA) without an external clock head. The proposed process provided a specified threshold for consecutive invalid triggers causing process termination. The analysis suggested that the proposed process achieved servo-pattern alignment at reduced capital and process cost compared to conventional clock-head based servowriters. It is expected to further improve the servo-pattern alignment by improving the detector and system write noise.

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IEEE Transactions on Magnetics

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