Global Patent Index - EP 0400220 A1

EP 0400220 A1 19901205 - Laminated article for identification purposes.

Title (en)

Laminated article for identification purposes.

Title (de)

Schichtpressartikel Laminat für Identifizierungszwecke.

Title (fr)

Article laminé pour des fins d'identification.

Publication

EP 0400220 A1 19901205 (EN)

Application

EP 89201383 A 19890531

Priority

EP 89201383 A 19890531

Abstract (en)

A laminated article containing visible information which article comprises two plastic resin sheets or layers at least one of which is transparent and having laminated inbetween at least one hydrophilic colloid layer containing photographically produced information and carrying or containing thermochromic liquid crystals of the cholesteric type in the form of a pattern or an indicium that can be made visible or obtains a change in colour by heating above 25 DEG C, said liquid crystals being arranged against a contrasting background having an optical density of at least 0.2 in its spectral absorption range.

IPC 1-7

B41M 3/14; B41M 5/28; B42D 15/02; G03C 8/42

IPC 8 full level

B32B 7/02 (2006.01); B32B 9/00 (2006.01); B41M 3/14 (2006.01); B41M 5/28 (2006.01); B42D 15/10 (2006.01); C09K 3/00 (2006.01); G03C 8/42 (2006.01)

CPC (source: EP US)

B41M 3/14 (2013.01 - EP); B41M 5/281 (2013.01 - EP); B42D 25/23 (2014.10 - EP); B42D 25/36 (2014.10 - EP); B42D 25/364 (2014.10 - EP); B42D 25/42 (2014.10 - EP); B42D 25/45 (2014.10 - US); G03C 8/423 (2013.01 - EP)

Citation (search report)

  • [Y] GB 2151987 A 19850731 - HICKIE CHRISTOPHER JOHN
  • [Y] EP 0251253 A2 19880107 - FABBIANI BRUNO
  • [Y] US 4310577 A 19820112 - DAVISON THOMAS W, et al
  • [Y] EP 0309618 A1 19890405 - AGFA GEVAERT NV [BE]
  • [A] WO 8202445 A1 19820722 - BOUTALEB LUCY ANN, et al
  • [Y] PATENT ABSTRACTS OF JAPAN vol. 10, no. 368 (M-543)[2425] 09 December 1986; & JP-A-61 162 386 (TDK) 23 July 1986
  • [Y] CHEMICAL ABSTRACTS, vol. 82, no. 4591, 06 January 1975 Columbus, Ohio, USA; (KUBO SOUICHI): 'LIQUID-CRYSTAL CONTAINING LIGHT-SENSITIVE MICROCAPSULES', page 496; ref. no. 178155K Am. Chem. Soc. Div. Org. Coat. Plast. Chem. Pap. 1973, 33(2),54

Designated contracting state (EPC)

AT BE CH DE ES FR GB GR IT LI LU NL SE

DOCDB simple family (publication)

EP 0400220 A1 19901205; EP 0400220 B1 19940831; DE 68917916 D1 19941006; DE 68917916 T2 19950223; JP H0342295 A 19910222

DOCDB simple family (application)

EP 89201383 A 19890531; DE 68917916 T 19890531; JP 14124090 A 19900529