Chromogenic media responsive to environmental conditions

Details Chromogenic media responsive to environmental conditions Chromogenic media responsive to environmental conditions

2011-04-05

2011-04-05

Hess, Bruce H (Department: 1785)

Record receiver having plural interactive leaves or a colorless

Having a colorless color-former, developer therefor, or...

Plural colors or plural diverse systems

C503S201000

Reexamination Certificate

active

07919433

ABSTRACT:
The present invention relates to chromogenic material that may respond and shift in color due to environmental conditions such as heat, light or humidity. The light may include both visible and non-visible light, such as ultraviolet light. The chromogenic material may therefore provide a method to independently develop a latent image on a given substrate, and in particular, to a substrate that includes conventional thermosensitive image forming media.

REFERENCES:
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patent: 5883043 (1999-03-01), Halbrook, Jr. et al.
patent: 6022648 (2000-02-01), Jacobson et al.
patent: 6060428 (2000-05-01), Chang et al.
patent: 6613715 (2003-09-01), Kutami et al.
patent: 6694912 (2004-02-01), Wesley
patent: 6713430 (2004-03-01), Tominaga et al.

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