Global Patent Index - EP 1028853 A1

EP 1028853 A1 2000-08-23 - HEAT-SENSITIVE RECORDING SHEET WITH A SECURITY ELEMENT IN THE FORM OF PRESSURE-SENSITIVE MICROCAPSULES

Title (en)

HEAT-SENSITIVE RECORDING SHEET WITH A SECURITY ELEMENT IN THE FORM OF PRESSURE-SENSITIVE MICROCAPSULES

Title (de)

WÄRMEEMPFINDLICHER AUFZEICHNUNGSBOGEN MIT DRUCKEMPFINDLICHEN MIKROKAPSELN ALS SICHERHEITSELEMENT

Title (fr)

FEUILLE D'IMPRESSION THERMOSENSIBLE COMPORTANT DES MICROCAPSULES SENSIBLES A LA PRESSION UTILISEES COMME ELEMENT DE SECURITE

Publication

EP 1028853 A1 (DE)

Application

EP 99944458 A

Priority

  • DE 19838893 A
  • EP 9906122 W

Abstract (en)

[origin: DE19838893A1] The invention relates to a heat-sensitive recording sheet. Said recording sheet consists of a substrate with a heat-sensitive recording layer containing colour formers and colour acceptors which react under the influence of heat. A security element in the form of pressure-sensitive microcapsules is provided in the heat-sensitive recording layer so that falsified documents can be recognised without the additional use of supplementary devices such as UV-lamps or chemicals. Said microcapsules contain one or more colour formers in a solvent. When the microcapsules are destroyed, said colour formers react with the colour acceptors to form a colour.

IPC 1-7 (main, further and additional classification)

B41M 5/30; B41M 3/14; B41M 5/124

IPC 8 full level (invention and additional information)

B41M 5/28 (2006.01); B41M 3/14 (2006.01); B41M 5/165 (2006.01); B41M 5/30 (2006.01); B41M 5/124 (2006.01)

CPC (invention and additional information)

B41M 3/142 (2013.01); B41M 5/30 (2013.01); B41M 5/124 (2013.01); B41M 5/165 (2013.01)

Citation (search report)

See references of WO 0012321A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

DE 19838893 A1 20000309; DE 19838893 C2 20000928; AT 209109 T 20011215; EP 1028853 A1 20000823; EP 1028853 B1 20011121; ES 2165240 T3 20020301; JP 2002523268 A 20020730; US 6440898 B1 20020827; WO 0012321 A1 20000309

INPADOC legal status


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