Light induced capacitance changes in donor polymers (or small molecules) films and its use for information storage in video disks and the like
AssigneeInternational Business Machines Corporation
InventorAri Aviram
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Abstract
A method for capacitatively storing data on a grooveless storage device is provided. The storage device is comprised of a conductive substrate having a layer of a photosensitive composition which dielectric constant is varied in the presence of irradiation. The method is carried out by exposing a layer of a photosensitive composition to irradiation in a predetermined pattern. The exposed layer is fixed by heating. Video disks for recording and playing back video signals can be prepared in accordance with the present method.
Claims8
A method for capacitively storing data on a grooveless storage device including the steps of
- (a) providing a storage device comprised of a conductive substrate having coated thereon a grooveless layer of a donor molecule composition which changes its dielectric constant when irradiated;
- (b) projecting data in the form of light in a predetermined pattern onto the surface of said grooveless layer of donor molecule composition to effect changes in the dielectric constant in said layer in said predetermined pattern;
- and
- (c) heating said exposed storage device to fix said predetermined pattern thereon.
Dependencies are inferred from the claim text.