Head-disk interaction sensor integrated with suspension

Details Head-disk interaction sensor integrated with suspension Head-disk interaction sensor integrated with suspension

2005-10-25

2005-10-25

Hudspeth, David (Department: 2651)

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

C360S237100, C360S240000, C360S244100, C360S245300, C360S245400, C360S245500, C360S245600, C360S245700

Reexamination Certificate

active

06958871

ABSTRACT:
A write-inhibit signal is generated by a head-disk interaction sensor during a write process that is integrated with a suspension of a hard disk drive (HDD) when fly-height modulation of the slider is detected during a write process The suspension load beam includes a dimple and a laminated flexure. The laminated flexure includes a surface that is adapted to receive a slider and a surface that is adapted to contact the dimple. The head-disk interaction sensor is fabricated as part of the laminations of the flexure. The head-disk interaction sensor can be an accelerometer that senses an acceleration of the flexure when the slider contacts the disk of the disk drive and/or a pressure sensor that senses a pressure between the flexure and the dimple when the slider contacts the disk. A write-inhibit circuit is responsive to the sensor signal by inhibiting the write process.

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“Optimal Means for Generating a Write Inhibit in Hard Disk Drives in Reponse to External Shock Using Accelerometers”, Oct.-1996, IBM Technical Disclosure Bulletin, vol. No. 39, Issue No. 10, pp. 131-132.

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