Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record
Patent
1978-12-21
1980-08-26
Eddleman, Alfred H.
Dynamic magnetic information storage or retrieval
Record transport with head stationary during transducing
Drum record
29603, 360121, 360122, 360125, G11B 512, G11B 522, G11B 542, G11B 560
Patent
active
042198534
ABSTRACT:
A method of making a thin film inductive head assembly, which has separate read and write transducers, comprises the steps of depositing the elemental layers of one thin film transducer on a substrate; sputter depositing on the transducer a thick transparent insulating layer; flat lapping the thick insulating layer; depositing the elemental layers of a second thin film transducer on the flat lapped insulating layer; and depositing a thick insulating overcoat on the second thin film transducer. The substrate is then configured as a slider element for flying in transducing relation over a record medium, such as a rotary magnetic disk. The resultant structure includes thin film read and write transducers with a thick transparent insulating layer therebetween, all deposited successively in layers on one surface of the substrate, and having a protective insulating overcoat.
REFERENCES:
patent: Re29326 (1977-07-01), Lazzari et al.
patent: 3414971 (1968-12-01), Boehme
patent: 3846841 (1974-11-01), Lazarri et al.
patent: 3855625 (1974-12-01), Garnier et al.
patent: 3908194 (1975-09-01), Romankiw
patent: 4001890 (1977-01-01), Kayser
patent: 4130847 (1978-12-01), Head et al.
IBM Tech. Disc. Bull., W. A. Wawick, Multilayer Ceramic Slider For Thin-Film Heads, vol. 15, No. 7, Dec. 1972, pp. 2183-2184.
IBM Tech. Disc. Bull., E. P. Valstyn, Composite Read/Write Recording Head, vol. 14, No. 4, Sep. 1971, pp. 1283-1284.
IBM Tech. Disc. Bull., P. F. J. Landler, Alignment of Read/Write Heads in Sliders, vol. 11, No. 12, May 1969, pp. 1792-1793.
Albert Paul A.
Kennedy Thomas N.
Eddleman Alfred H.
International Business Machines - Corporation
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