Reversible thermosensitive coloring composition and reversible t

Details Reversible thermosensitive coloring composition and reversible t Reversible thermosensitive coloring composition and reversible t

1993-11-19

1995-04-04

Schwartz, Pamela R.

Record receiver having plural interactive leaves or a colorless

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

Method of use, kit, or combined with marking instrument or...

106 21R, 503208, 503209, B41M 530

Patent

active

054038103

ABSTRACT:
A reversible thermosensitive coloring composition containing a coloring agent, a color developer and a guanidine derivative, the coloring composition capable of assuming a color development state when heated at a predetermined color development temperature at which the coloring composition is fused, and capable of assuming a decolorization state when heated at a predetermined temperature lower than the color development temperature. A reversible thermosensitive recording medium is also disclosed which is composed of a support and a thermosensitive recording layer formed thereon, containing the above-mentioned reversible thermosensitive coloring composition.

REFERENCES:
patent: 4061836 (1977-12-01), Yundt
patent: 4680598 (1987-07-01), Obitsu et al.

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