Contact duplication system using anisotropic magnetic recording

Details Contact duplication system using anisotropic magnetic recording Contact duplication system using anisotropic magnetic recording

1980-07-14

1982-12-07

Kilgore, Robert M.

Dynamic magnetic information storage or retrieval

Record copying

Contact transfer

360131, 235493, G11B 586, G11B 574, G06K 1906

Patent

active

043630383

ABSTRACT:
A system for contact duplication is disclosed wherein anhysteretic magnetization of a copy medium occurs using an anisotropic master medium wherein the two media are held in surface contact and an AC bias magnetic field is applied along the hard axis of the master media.

REFERENCES:
patent: 2738383 (1956-03-01), Herr et al.
patent: 3982276 (1976-09-01), Roos
patent: 3986205 (1976-10-01), Fayling
patent: 3986206 (1976-10-01), Fayling
patent: 3995313 (1976-11-01), Fayling
"Magnetic Tape Duplication by Contact Printing", by H. Sugaya and F. Kobayashi in vol. 189, Jan. 3, 1972 issue, Annals of N.Y. Academy of Sciences.
"Anisotropic Erasure and Demagnetization Characteristics of Recording Tapes Compressing Particles With Uniaxial Magnetocrystalline Anisotropy" by R. E. Fayling, in IEEE Transactions on Magnetics, vol. MAG-13, Sep. 1977.

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