Inkless reimageable printing paper and method

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

G - Physics

03

C

G03C 1/00 (2006.01) C09K 9/02 (2006.01) G03C 1/675 (2006.01) G03C 1/685 (2006.01) G03C 1/73 (2006.01) G03B 27/00 (2006.01)

Patent

CA 2634399

An image forming medium includes a substrate, and an imaging layer coated on or impregnated into said substrate, wherein the imaging layer includes an imaging composition including a photochromic or photochromic-thermochromic material dissolved or dispersed in a solvent or polymeric binder, wherein the imaging composition is imageable by light of a first wavelength and erasable in a short time period by a combination of heat and light of a second wavelength such that simultaneous erase with heat and light of the second wavelength is faster than erase by heat alone and exhibits a reversible transition between a colorless and a colored state.

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