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Proceedings Paper

Investigation of head-disk contact using disks contaminated with glass beads
Author(s): Minoru Takahashi; Masayoshi Shinohara; Takayuki Yamamoto; Kazunori Tsuchiya
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Paper Abstract

In a magnetic disk system, the distance between the head and the disk is reduced as much as possible to increase the recording density. As the distance decreases, contact between the head and the disk becomes more and more likely. We have studied conditions leading to contact between head and disk in an effort to decrease the likelihood of contact. We experimented with a piezoelectric transducer on the back of the head slider as a contact sensor. We also construct a contamination system which issues glassbead particles at a controllable rate. We studied the relation between particle concentration and head/disk contact using this system. We also evaluated head flying characteristics over particle-contaminated disk surfaces, and tested contaminated disk surfaces in high-velocity head sliding contact.

Paper Details

Date Published: 1 August 1990
PDF: 8 pages
Proc. SPIE 1248, Storage and Retrieval Systems and Applications, (1 August 1990); doi: 10.1117/12.19633
Show Author Affiliations
Minoru Takahashi, Fujitsu Labs. Ltd. (Japan)
Masayoshi Shinohara, Fujitsu Labs. Ltd. (Japan)
Takayuki Yamamoto, Fujitsu Labs. Ltd. (Japan)
Kazunori Tsuchiya, Fujitsu Labs. Ltd. (Japan)

Published in SPIE Proceedings Vol. 1248:
Storage and Retrieval Systems and Applications
David H. Davies; Han-Ping D. Shieh, Editor(s)

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