Photochromic medium with erase-on-demand capability

Details Photochromic medium with erase-on-demand capability Photochromic medium with erase-on-demand capability

2011-06-21

2011-06-21

Shewareged, Betelhem (Department: 1785)

Stock material or miscellaneous articles

Structurally defined web or sheet

Including components having same physical characteristic in...

C428S195100, C428S220000, C428S332000, C428S537500, C428S913000

Reexamination Certificate

active

07964271

ABSTRACT:
The presently disclosed embodiments are directed to image forming mediums useful for reimageable and transient documents. More particularly, the embodiments pertain to an image forming medium comprising photochromic materials comprising unsymmetrical dithienylethene (DTE) photochromes which provide longer image lifetimes and “erase-on-demand” capability.

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International Search Report dated Jul. 8, 2009 for EP Patent Application No. 09 161 886.8, 5 pages.

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