Video head assembly having discrete arcurate ceramic pieces on r

Details Video head assembly having discrete arcurate ceramic pieces on r Video head assembly having discrete arcurate ceramic pieces on r

1975-09-12

1977-08-02

Eddleman, Alfred H.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360122, 360130, G11B 522, G11B 552, G11B 1560

Patent

active

040401103

ABSTRACT:
In a video head assembly employing ceramic-ferrite transducer heads, the present invention proposes modification of head assembly components, i.e., the recording tape vacuum guide and the head wheel, so that a head assembly may be provided which possesses an operating lifetime commensurate with the ceramic-ferrite transducer heads. The invention proposes a head wheel having an outer surface which will wear to an unacceptably out-of-round condition at a significantly slower rate than present head wheels. To complement the proposed head wheel, the invention further proposes a tape guide having a guide surface so constructed as to wear more slowly than present tape guides so the radius as defined by the SMPTE will be maintained for more tape hours, thus helping to retain the proper guide surface contour throughout the life of the transducer heads.

REFERENCES:
patent: 3244818 (1966-04-01), Bick et al.
patent: 3335412 (1967-08-01), Matsumoto
patent: 3363066 (1968-01-01), Prochnow
patent: 3370282 (1968-02-01), Baldwin et al.
patent: 3592976 (1971-07-01), McGinnis
patent: 3614831 (1971-10-01), Grundtner et al.

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