Machined magnetic head with contoured air bearing surfaces

Details Machined magnetic head with contoured air bearing surfaces Machined magnetic head with contoured air bearing surfaces

1996-10-23

1998-04-21

Evans, Jefferson

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

G11B 560

Patent

active

057424519

ABSTRACT:
The present invention is directed to stabilize the flying height at a constant level and prevent head crashes.
Indented portions 104 and 105 are formed shorter than rail portions 101 and 102. Rear rail surfaces 113 and front rail surfaces 112 are formed at the slider 1 with middle rail surfaces 111 formed between them. The rear rail surfaces 113 and the front rail surfaces 112 each include a first surface (L1) whose surface width is determined by the entire width W01 or W02 of the rail portion 101 or 102 and a second surface (L3) whose surface width is gradually reduced starting from the surfaces width W01 or W02 of the first (L1) toward the surface width W11 or W12 of the middle rail surfaces 111. The requirements, i.e., L1.ltoreq.2.5% of L0 and L1<L2.ltoreq.15% of L0 are satisfied for the length L1 of the first surfaces (L1), the length L2, that includes the first surfaces (L1) and the second surfaces (L3) and the entire length L0 of the rail portions 101 and 102.

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