Single-track video ferrite record/reproduce head and manufacturi

Details Single-track video ferrite record/reproduce head and manufacturi Single-track video ferrite record/reproduce head and manufacturi

1976-03-22

1977-04-12

Tupper, Robert S.

Dynamic magnetic information storage or retrieval

Head

Head surface structure

G11B 5221

Patent

active

040178994

ABSTRACT:
Two magnetic ferrite pieces having longitudinal channels formed in the side faces thereof are bonded together with a gapping substance so that the resultant channels form a window. The bonded pieces are precisely slotted to a depth below the apex of the window to form a narrow track-defining comb-like array. The resulting slots are adapted to receive gap-protecting compatible ceramic support material which is so chosen as to wear slightly faster than the ferrite surfaces. In one embodiment, the slots contain ceramic-convertible glass which is devitrified by firing the array. The assembly is then processed to form a ceramic-ferrite-ceramic or ceramic-ferrite transducer sandwich which may be further processed to form part of a magnetic record and/or reproduce head.

REFERENCES:
patent: 3775571 (1973-11-01), Case et al.

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