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US 4,599,658 AGranted
Thermo-magnetic recording method
AssigneeFuji Xerox Co., Ltd.
InventorsKoichi Saitoh, Teruhiko Itami, Toshifumi Kimoto, Nobuo Nishimura
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Abstract
A method of thermo-magnetic recording employs a recording medium of a magnetization material disposed on an insulator. An area on the medium is joule-heated via the application of a voltage across contacting electrodes up to a bias point, and a heat pattern is applied in the form of an image to form a magnetic latent image.
Claims10
A thermo-magnetic recording method, comprising:
- providing a magnetic recording medium having a thermally magnetizable ferromagnetic surface layer disposed on an insulating layer;
- contacting a pair of spaced apart electrodes to said ferromagnetic surface layer in a spaced manner said electrodes traversing said ferromagnetic surface layer and defining a predetermined portion of said ferromagnetic surface layer;
- applying a voltage to said electrodes causing Joule preheating of said ferromagnetic surface layer;
- and
- inputting a heat pattern in the form of an image and applying uniform magnetic field to form a magnetic latent image in said ferromagnetic surface layer;
- wherein said uniform magnetic field is applied by means of a magnetized layer of said magnetic recording medium.
3 more elements
Dependencies are inferred from the claim text.