Rotary magnetic head device with head base and transducer having

Details Rotary magnetic head device with head base and transducer having Rotary magnetic head device with head base and transducer having

1994-12-16

1997-07-08

Evans, Jefferson

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 7716, G11B 5592

Patent

active

056468032

ABSTRACT:
A rotary magnetic head device in which the amount of protrusion of a magnetic head with changes in temperature is comprised within a pre-set range for assuring stable contact between the magnetic head and the recording medium. The head base (1) and the electromechanical transducer element (2) are formed of materials having the linear expansion coefficient in substantially the same range.

REFERENCES:
patent: 4805057 (1989-02-01), Ogawa et al.
patent: 4831480 (1989-05-01), Takeda
patent: 4999905 (1991-03-01), Kuriyama et al.
patent: 5036419 (1991-07-01), Okauchi et al.
patent: 5103361 (1992-04-01), Nagatsuka et al.
patent: 5126906 (1992-06-01), Ohji et al.
patent: 5408376 (1995-04-01), Nishikura et al.

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