Multicolor heat-sensitive verification and highlighting system

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...

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Bibliographische Detailangaben
Hauptverfasser:	WENDLER, ERIC B, GREGORY, JR., VANCE P, CHANG, JOHN C. H
Format:	Patent
Sprache:	eng
Schlagworte:	ADVERTISING BOOK COVERS BOOKBINDING CHECKING-DEVICES COLOUR PRINTING CORRECTION OF TYPOGRAPHICAL ERRORS CRYPTOGRAPHY DECORATIVE ARTS DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDEDFOR DISPLAY DISPLAYING EDUCATION FILES HANDLING OF COINS OR OF PAPER CURRENCY OR SIMILAR VALUABLEPAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING,DISPENSING, CHANGING OR DEPOSITING i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LABELS OR NAME-PLATES LINING MACHINES LOOSE LEAVES MOVABLE-STRIP WRITING OR READING APPARATUS PERFORMING OPERATIONS PHYSICS PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITYFEATURES PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOTOTHERWISE PROVIDED FOR PRINTING PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES SEALS SELECTIVE PRINTING MECHANISMS SIGNS SPECIAL DESIGNS OR PICTURES SPECIAL PRINTED MATTER STAMPS TRANSPORTING TYPEWRITERS
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Beschreibung
Zusammenfassung:	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.