Multicolored photochromic display

Details Multicolored photochromic display Multicolored photochromic display

2004-06-30

2008-08-12

McPherson, John A. (Department: 1795)

Radiation imagery chemistry: process, composition, or product th

Dye image from radiation sensitive dye or dye former by dry...

Composition or product

C430S019000, C430S333000

Reexamination Certificate

active

07410750

ABSTRACT:
A multicolored display and process for forming such a display is provided. The multicolored display includes marking particles comprising a mixture of photochromic materials. The photochromic materials each exhibit a first “invisible” photochromic state at a first absorption spectrum and at least a second “visible” photochromic state at a second absorption spectrum. The second “visible” photochromic state of each photochromic material produces a different color relative to the other photochromic materials. In embodiments, the marking particles include a mixture of a spiropyran material and a dithienylethene material.

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