Chromogenic copy system and method

Details Chromogenic copy system and method Chromogenic copy system and method

1981-08-17

1983-02-08

Herbert, Jr., Thomas J.

Textiles: manufacturing

3461351, 427150, 427151, 427152, 427261, 428195, 428207, 428211, 4283208, 428342, 428530, 428537, 428913, 428914, 544165, 548257, B41L 120, B32B 516, B32B 2742

Patent

active

043725830

ABSTRACT:
A pressure-sensitive chromogenic copy system utilizing a color developer capable of reacting with a chromogen to form a color image, said color developer comprising an oligomeric aromatic carboxylic acid and the method of making such oligomer by reaction of the acid with an aldehyde under alkaline conditions.

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