Multiple stage heat shielding for transducer support arm

Details Multiple stage heat shielding for transducer support arm Multiple stage heat shielding for transducer support arm

1988-09-22

1990-01-02

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360 9703, G11B 555

Patent

active

048917230

ABSTRACT:
A support means is disclosed for mounting an integrated circuit chip preamplifier with respect to an aluminum transducing head support arm in a magnetic disc drive. The support means includes two heat shields, each with an aluminum foil layer facing the preamplifier and a thermally insulative adhesive layer facing the rigid arm. The preamplifier is secured to the foil layer of the most adjacent heat shield with an electrically insulative but thermally conductive adhesive. The alternating thermally conductive and thermally insulative layers interfere with longitudinal heat transfer but allow lateral heat transfer to promote heat dissipation laterally outwardly of the support means, and thus substantially reduce thermal expansion of the support arm.

REFERENCES:
patent: 4402025 (1983-08-01), Anderson et al.
patent: 4495378 (1985-01-01), Dotzer et al.
patent: 4616279 (1986-10-01), Poorman
patent: 4658331 (1987-04-01), Berg
patent: 4745502 (1988-05-01), Fasano

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