Ceramic guides for tape-like materials and process for the produ

Details Ceramic guides for tape-like materials and process for the produ Ceramic guides for tape-like materials and process for the produ

1982-09-29

1985-08-06

Wolff, John H.

Dynamic magnetic information storage or retrieval

Head

Head accessory

242 76, 242157R, 226196, G11B 1560

Patent

active

045339686

ABSTRACT:
A ceramic guide for tape-like materials such as magnetic recording tapes, movie films, and microfilms, and a process for producing such ceramic guides are described. The ceramic guide is a sintered product of (A) 98 to 93 parts by weight of barium titanate, (B) 2 to 7 parts by weight of a silicate inorganic binder, and (C) 0.2 to 2 parts by weight, per 100 parts by weight of (A) and (B), of lanthanum oxide. The ceramic guide meets the requirements for guides for use in, e.g., small sized video cassettes, is non-magnetic, electrically conductive and has anti-static properties and, therefore, it does not generate static charge and has a low coefficient of friction during running of tape-like materials in contact therewith.

REFERENCES:
patent: 3787229 (1974-01-01), Rudness
patent: 4062484 (1977-12-01), Rausch et al.
patent: 4378899 (1983-04-01), Sanford

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