Thermo-magnetic recording device

Details Thermo-magnetic recording device Thermo-magnetic recording device

1986-10-27

1988-04-26

Evans, Arthur G.

Recorders

Magnetographic

Radiation sensitive

346 76R, G01D 1500

Patent

active

047407972

ABSTRACT:
A thermo-magnetic recording device wherein a magnetized latent image is produced on a magnetic layer by locally heating the magnetic layer. The device includes a heat-generating ribbon for generating heat upon energization thereof, at least one working electrode movable relative to the magnetic layer in a recording direction, and relative to the heat-generating ribbon in sliding contact with the heat-generating ribbon, such that the at least one working electrode locally holds the heat-generating ribbon in contact with the magnetic layer, a deive for effecting a relative movement between the ribbon and the at least one working electrode, and at least one auxiliary electrode placed in direct or indirect contact with the heat-generating ribbon. An electric current is applied between the at least one working electrode and the at least one auxiliary electrode, to energize a local portion of the heat-generating ribbon which is currently in contact with the magnetic layer, thereby causing the energized portion of the heat-generating ribbon to generate heat for locally heating the magnetic layer to produce the magnetized latent image on the magnetic layer.

REFERENCES:
patent: 4236834 (1980-12-01), Hafer et al.
patent: 4442441 (1984-04-01), Kikuchi et al.

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