Flying-type composite magnetic head

Details Flying-type composite magnetic head Flying-type composite magnetic head

1989-01-27

1991-04-23

Heinz, A. J.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Drum record

360119, G11B 560

Patent

active

050104314

ABSTRACT:
A flying-type composite magnetic head comprising a slider made of a non-magnetic ceramic and having side rails extending longitudinally on both lateral sides of the head; a slit extending longitudinally in one of the side rails; and a magnetic core. The magnetic core is constituted by a pair of core pieces bonded to each other with a first glass layer and fixed in the slit of the slider with a second glass layer on both sides of the magnetic core. The core pieces have flat opposing surfaces parallel to each other for defining a magnetic gap with at least one of the opposing surfaces formed with an Fe-Al-Si thin layer. The magnetic core is provided in its track surface with a notch for restricting a track width, the notch having a depth equal to or greater than the depth of the magnetic gap, and the remaining thickness of the first glass layer bonding the magnetic core pieces being equal to or greater than the thickness of the magnetic core.

REFERENCES:
patent: 3562444 (1971-02-01), Hoogendoorn
patent: 3823416 (1973-03-01), Warner
patent: 4740853 (1988-04-01), Mukae
patent: 4816949 (1989-03-01), Yamada
patent: 4819113 (1989-04-01), Kubata

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