Dynamic skew correction for rotating head magnetic recorder

Details Dynamic skew correction for rotating head magnetic recorder Dynamic skew correction for rotating head magnetic recorder

1974-07-17

1976-03-09

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Automatic control of a recorder mechanism

Controlling the record

360 84, 360130, G11B 1526, G11B 1560, G11B 548

Patent

active

039435660

ABSTRACT:
Parallelism between the track on magnetic tape and the path of the rotating head is dynamically adjusted and maintained by adjusting one or both of the entry or exit guides guiding the tape as it helically wraps a mandrel. The mandrel has two halves that flank the rotating head so that as the tape wraps the mandrel, the rotating head traverses the tape at an oblique angle. Skew error is represented by a lack of parallelism between the track on the tape and the path of the rotating head across the tape. The skew error may be corrected by laterally shifting either the entry or exit tape edge guide without distorting the track over a limited lateral range of movement by the guides. The entry and exit edge guides are continuouscompliant air-bearing guides. Similarly, the mandrel that supports the tape adjacent the rotating head is also air bearing.

REFERENCES:
patent: 2919314 (1959-12-01), Holt
patent: 3319014 (1967-05-01), Sugawa
patent: 3636275 (1972-01-01), Sato et al.
patent: 3679840 (1972-07-01), Maxey
patent: 3691315 (1972-09-01), Ellmore
patent: 3845500 (1974-10-01), Hart

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