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US 3,980,476 AGranted
Imaging system
AssigneeXerox Corporation
InventorJoseph J. Wysocki
Life of this patent
Estimating the term…
Abstract
There is disclosed an imaging system for forming a plurality of images on the same surface, at least one of which is permanent and one of which is erasable. The imaging system includes an electro-optic imaging member which has a "built-in" master image.
Claims7
An imaging method comprising the steps of:
- a. providing an imaging member comprising a voltage or current-sensitive light modulating layer overlying a layer of photoconductive material, said photoconductive layer being physically permanently modified by exposure to UV radiation in a first imagewise pattern;
- b. applying an electrical field across said imaging member;
- and
- c. exposing said photoconductive material to a second imagewise pattern of activating radiation whereby images corresponding to said first and second imagewise patterns are formed in said imaging member.
1 more element
Dependencies are inferred from the claim text.