Flying-type composite magnetic head with appropriate bonding gla

Dynamic magnetic information storage or retrieval – Record transport with head stationary during transducing – Drum record

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G11B 560

Patent

active

050161296

ABSTRACT:
A flying-type composite magnetic head includes (a) a magnetic core constituted by a pair of core pieces bonded together by a first glass portion, at least one of opposing surfaces of the core pieces being formed with a thin magnetic metal layer; (b) a non-magnetic slider having a slit for receiving the magnetic core; and (c) a second glass portion for fixing the magnetic core in the slit; the first glass portion having a softening point lower than a first bonding temperature by 70.degree. C. or more and a yielding temperature higher than a second bonding temperature, and the second glass portion having a softening point lower than a second bonding temperature by 70.degree. C. or more. The first bonding temperature T.sub.1 .degree.C.) for forming the first glass portion satisfies the following relation:

REFERENCES:
patent: 4897915 (1990-02-01), Ito
patent: 4916563 (1990-04-01), Kawase

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