US Patent 7655366 Inkless reimageable printing paper and method
Patent 7655366 was granted and assigned to Xerox on February, 2010 by the United States Patent and Trademark Office.
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An image forming medium includes a substrate and an imaging layer coated on or impregnated into a substrate, where the imaging layer is formed of an imaging composition that includes a solvent or a polymeric binder, and a photochromic material selected from substituted fulgides and substituted dithienylethenes, dissolved or dispersed in the solvent or polymeric binder, and where the imaging composition exhibits a reversible homogeneous-heterogeneous transition between a colorless state, an intermediate colorless or colored erasable state, and a final colored stable state, the photochromic material converting from the colorless state to the colored stable state upon irradiation with light of a first wavelength and converting from the colored stable state to the colorless state upon exposure to heat and light.
US Patent 07655366 Inkless reimageable printing paper and method US Patent 7655366 Inkless reimageable printing paper and method
US Patent 07655366 Inkless reimageable printing paper and method
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