Recorders – Magnetographic
Patent
1977-10-11
1978-08-08
Lucas, Jay P.
Recorders
Magnetographic
360 55, 365157, G03G 1900, G11B 500
Patent
active
041060288
ABSTRACT:
Method and apparatus are provided for forming a magnetic image on a recording element replicating incident image illumination. The recording element is a composite structure comprising a photoconductive, piezoelectric component and a magnetostrictive component. By rigidly associating these components, mechanical stress generated by the illumination of the photoconductive, piezoelectric component is transmitted to the magnetostrictive component, in which the mechanical stress is converted to imagewise coercivity variations. If the recording element is simultaneously subjected to a magnetic field, a remanent magnetic field that replicates the image is produced in the magnetostrictive component.
REFERENCES:
patent: 2683856 (1954-07-01), Kornei
patent: 2942928 (1960-06-01), Levin
patent: 3735369 (1973-05-01), Iida
patent: 3909809 (1975-09-01), Kinsner
patent: 3922687 (1975-11-01), Trimble
"Components that Learn and How to Use Them", Crafts, Article in Electronics Mag., 3/22/63, p. 40.
Jeffers Frederick J.
Lemke James U.
McClure Richard J.
Cody Robert F.
Eastman Technology Inc.
Lucas Jay P.
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