Method and apparatus for forming magnetic images by piezoelectri

Details Method and apparatus for forming magnetic images by piezoelectri Method and apparatus for forming magnetic images by piezoelectri

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.

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