Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – To produce color reproduction
Patent
1995-06-01
1997-07-01
Caldarola, Glenn A.
Radiation imagery chemistry: process, composition, or product th
Electric or magnetic imagery, e.g., xerography,...
To produce color reproduction
430106, 430109, 430126, G03G 1301, G03G 900, G03G 1314
Patent
active
056437013
ABSTRACT:
An electrophotographic process wherein an image is formed with toner comprising a mutable colorant and an ultraviolet radiation transorber so that an image formed by the electrophotographic process can be altered in color or erased. The electrophotographic process comprises the steps of creating an image on a photoreceptor surface, applying a toner on the photoreceptor surface to form a toner image which replicates the image, transferring the toner image to a substrate, and fixing the toner image to the substrate. The toner comprises a mutable colorant, an ultraviolet radiation transorber, and a carrier comprising a polymer. The ultraviolet radiation transorber is adapted, upon exposure to ultraviolet radiation, to interact with the mutable colorant to irreversibly mutate the mutable colorant from an initial absorption maximum to a new absorption maximum different from the initial absorption maximum. The electrophotographic process may further comprise exposing the toner image on the substrate to ultraviolet radiation at a dosage level sufficient to irreversibly mutate the colorant and change the color of the toner image or render the image colorless. The substrate can then be reused to form a second toner image thereon.
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MacDonald John Gavin
McGinniss Vincent Daniel
Nohr Ronald Sinclair
Whitmore, Jr. Robert Samuel
Caldarola Glenn A.
Kimberly-Clark Corporation
Pasterczyk J.
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