Method for creating magnetic masters

Details Method for creating magnetic masters Method for creating magnetic masters

1980-07-28

1982-08-03

Wolff, John H.

Recorders

Magnetographic

3461531, 346159, 430 39, G11B 500

Patent

active

043430082

ABSTRACT:
A magnetic master is provided by premagnetizing a magnetizable recording member, forming characters on the backing layer of the recording member with a typewriter or suitable marking means, and exposing the recording member from the backing layer side to flash energy to demagnetize the background areas and form a latent magnetic image. The latent magnetic image may be contacted with a magnetic toner and the developed image transferred to a receiving surface where it is permanently fixed. The magnetic master may be developed hundreds or thousands of times to produce the desired number of prints.

REFERENCES:
patent: 3804511 (1974-04-01), Rait et al.
patent: 3823405 (1974-07-01), Andreaggi et al.
patent: 3845306 (1974-10-01), Kohlmannsperger
patent: 4216282 (1980-08-01), Edwards et al.

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