Chromogenic copy systems and methods

Details Chromogenic copy systems and methods Chromogenic copy systems and methods

1991-03-04

1991-12-24

Hess, Bruce H.

Record receiver having plural interactive leaves or a colorless

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

Heavy metal reactant

106 21, 427150, 503211, 503212, 503216, 503225, B41M 5155, C09D 1100

Patent

active

050752782

ABSTRACT:
A pressure-sensitive chromogenic copy system comprising a transfer sheet having on at least a portion of at least one surface thereof a color developer capable of reacting with a chromogen to form a color image, said color developer comprising a crude reaction medium resulting from reactants used to prepare a salicylate and also containing therein at least one metal compound of such salicylate, the resultant transfer sheet, color developer and process for making such color developer.

REFERENCES:
patent: 3934070 (1976-01-01), Kimura et al.

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