Inkless reimageable printing paper and method

Details Inkless reimageable printing paper and method Inkless reimageable printing paper and method

2007-06-13

2010-02-23

Walke, Amanda C. (Department: 1795)

Radiation imagery chemistry: process, composition, or product th

Erasable imaging

C430S270100, C430S905000

Reexamination Certificate

active

07666558

ABSTRACT:
An image forming medium includes a substrate, and an imaging layer coated on or impregnated into the substrate, wherein the imaging layer includes a photochromic polymer, optionally dispersed in a polymeric binder or a phase change binder, the photochromic polymer including a polymer having at least one photochromic unit grafted therein, wherein the imaging layer exhibits a reversible transition between a colorless state and a colored state in response to heat and light and wherein the imaging layer does not exhibit a transition from the colored state to colorless state when heated in the absence of light.

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