Laser printing method and substrate

Details Laser printing method and substrate Laser printing method and substrate

1999-05-24

2000-10-31

Hess, Bruce H.

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...

428690, 430945, B41M 530

Patent

active

061402672

ABSTRACT:
A method and substrate for printing information wherein at least one coating is applied to a substrate, the coating having a colorformer leucodye and at least one color activator. The colorformer leucodye and at least one activator react when heated to exhibit a chromic change of at least one of a color change visible in normal light and a fluorescence visible only in ultraviolet light. The at least one coating is heated with at least one laser beam to effect the chromic change at selected points to thereby print information.

REFERENCES:
patent: 5750462 (1998-05-01), Gundjian

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