Rotary head drum unit with grooves or protrusions on a stationar

Details Rotary head drum unit with grooves or protrusions on a stationar Rotary head drum unit with grooves or protrusions on a stationar

1990-07-31

1993-06-15

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Head accessory

G11B 1561

Patent

active

052204758

ABSTRACT:
Apparatus for recording or reproducing signals on a magnetic recording tape by wrapping the tape around a rotary drum unit of type including a stationary drum and a rotary drum supported by the stationary drum is provided with grooves which are formed in the stationary drum, the grooves being deeper than the depth of surface coarseness of the stationary drum and being located adjacent a point at which the tape parts from the stationary drum when the tape travels for recording or reproduction.

REFERENCES:
patent: 4257076 (1981-03-01), Shimizu et al.
patent: 4833562 (1989-05-01), Kochi et al.

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