B - Operations – Transporting – 41 – M
Patent
B - Operations, Transporting
41
M
B41M 3/14 (2006.01) B41M 5/28 (2006.01)
Patent
CA 2163488
A document capable of providing multiple colors under the application of heat comprising a support having at least one surface bearing a first coating comprising a substantially colorless, heat activatable chromogenic composition capable of producing a first color under the application of heat, and a second coating comprising a localized coating of a substantially colorless, heat activatable chromogenic composition capable of producing a second color under the application of heat. Each chromogenic composition comprises a chromogenic compound and a color developer that are substantially colorless solids in physical contact prior to reaction, but which can chemically react to produce a visible colored image by application of heat at temperatures above room temperature. Under the application of heat from a thermal printer, by quickly striking the chromogenic composition with a fingernail or blunt object to produce frictional heat, or other heat application, multicolored images are provided.
Chang John C.h.
Gregory Vance P. Jr.
Wendler Eric B.
Kirby Eades Gale Baker
Wallace Computer Services Inc.
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