WO2009081035A3 - Structure de securite comportant des cristaux liquides nematiques - Google Patents

Structure de securite comportant des cristaux liquides nematiques Download PDF

Info

Publication number
WO2009081035A3
WO2009081035A3 PCT/FR2008/052335 FR2008052335W WO2009081035A3 WO 2009081035 A3 WO2009081035 A3 WO 2009081035A3 FR 2008052335 W FR2008052335 W FR 2008052335W WO 2009081035 A3 WO2009081035 A3 WO 2009081035A3
Authority
WO
WIPO (PCT)
Prior art keywords
safety structure
liquid crystals
nematic liquid
region
partially
Prior art date
Application number
PCT/FR2008/052335
Other languages
English (en)
Other versions
WO2009081035A2 (fr
Inventor
Michel Camus
Original Assignee
Arjowiggins Licensing
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Arjowiggins Licensing filed Critical Arjowiggins Licensing
Priority to CA2709826A priority Critical patent/CA2709826A1/fr
Priority to US12/746,013 priority patent/US8397995B2/en
Priority to EP08863469.6A priority patent/EP2225417B1/fr
Priority to BRPI0821705-0A priority patent/BRPI0821705A2/pt
Publication of WO2009081035A2 publication Critical patent/WO2009081035A2/fr
Publication of WO2009081035A3 publication Critical patent/WO2009081035A3/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
    • D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
    • D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
    • D21H21/40—Agents facilitating proof of genuineness or preventing fraudulent alteration, e.g. for security paper

Landscapes

  • Polarising Elements (AREA)
  • Credit Cards Or The Like (AREA)
  • Liquid Crystal (AREA)
  • Laminated Bodies (AREA)

Abstract

La présente invention concerne une structure de sécurité (10) comportant; une première région (14) au moins partiellement réfléchissante d'opacité réduite, une deuxième région (15) au moins partiellement réfléchissante de plus forte opacité que la première, une couche (18) d'un revêtement présentant des propriétés de biréfringence, recouvrant au moins partiellement les première et deuxième régions.
PCT/FR2008/052335 2007-12-24 2008-12-17 Structure de securite comportant des cristaux liquides nematiques WO2009081035A2 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA2709826A CA2709826A1 (fr) 2007-12-24 2008-12-17 Structure de securite comportant des cristaux liquides nematiques
US12/746,013 US8397995B2 (en) 2007-12-24 2008-12-17 Security structure including nematic liquid crystals
EP08863469.6A EP2225417B1 (fr) 2007-12-24 2008-12-17 Structure de securite comportant des cristaux liquides nematiques
BRPI0821705-0A BRPI0821705A2 (pt) 2007-12-24 2008-12-17 Estrutura de segurança, objeto e processo de autenticação de uma estrutura de segurança

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0760336 2007-12-24
FR0760336A FR2925534B1 (fr) 2007-12-24 2007-12-24 Structure de securite comportant des cristaux liquides nematiques

Publications (2)

Publication Number Publication Date
WO2009081035A2 WO2009081035A2 (fr) 2009-07-02
WO2009081035A3 true WO2009081035A3 (fr) 2009-10-08

Family

ID=39673402

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2008/052335 WO2009081035A2 (fr) 2007-12-24 2008-12-17 Structure de securite comportant des cristaux liquides nematiques

Country Status (6)

Country Link
US (1) US8397995B2 (fr)
EP (1) EP2225417B1 (fr)
BR (1) BRPI0821705A2 (fr)
CA (1) CA2709826A1 (fr)
FR (1) FR2925534B1 (fr)
WO (1) WO2009081035A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2925924B1 (fr) * 2007-12-28 2011-04-29 Arjowiggins Licensing Sas Papier de securite

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0229645A1 (fr) * 1986-01-16 1987-07-22 GAO Gesellschaft für Automation und Organisation mbH Procédé de production d'un papier de sécurité à élément de sécurité incorporé
EP0549284A1 (fr) * 1991-12-27 1993-06-30 Nippon Paint Co., Ltd. Procédé pour le traitement des hydrocarbures halogénés
WO1994020679A1 (fr) * 1993-03-02 1994-09-15 Arjo Wiggins S.A. Papier de securite comportant des zones localisees d'epaisseur et d'opacite reduites et son procede de fabrication
WO1996006220A1 (fr) * 1994-08-24 1996-02-29 Arjo Wiggins S.A. Procede de fabrication d'un papier de securite comportant des zones localisees de faible opacite et papier ainsi obtenu
EP1120737A1 (fr) * 2000-01-27 2001-08-01 Rolic AG Dispositif optique de sécurité
WO2002085642A2 (fr) * 2001-04-24 2002-10-31 Merck Patent Gmbh Marquage birefringent
EP1335217A2 (fr) * 2002-02-06 2003-08-13 MERCK PATENT GmbH Traitement birefringent et son utilisation
WO2004025337A1 (fr) * 2002-09-11 2004-03-25 Merck Patent Gmbh Marquage birefringent
WO2005005727A1 (fr) * 2003-07-14 2005-01-20 Giesecke & Devrient Gmbh Element de surete

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6764014B2 (en) * 1999-09-07 2004-07-20 American Express Travel Related Services Company, Inc. Transaction card

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0229645A1 (fr) * 1986-01-16 1987-07-22 GAO Gesellschaft für Automation und Organisation mbH Procédé de production d'un papier de sécurité à élément de sécurité incorporé
EP0549284A1 (fr) * 1991-12-27 1993-06-30 Nippon Paint Co., Ltd. Procédé pour le traitement des hydrocarbures halogénés
WO1994020679A1 (fr) * 1993-03-02 1994-09-15 Arjo Wiggins S.A. Papier de securite comportant des zones localisees d'epaisseur et d'opacite reduites et son procede de fabrication
WO1996006220A1 (fr) * 1994-08-24 1996-02-29 Arjo Wiggins S.A. Procede de fabrication d'un papier de securite comportant des zones localisees de faible opacite et papier ainsi obtenu
EP1120737A1 (fr) * 2000-01-27 2001-08-01 Rolic AG Dispositif optique de sécurité
WO2002085642A2 (fr) * 2001-04-24 2002-10-31 Merck Patent Gmbh Marquage birefringent
EP1335217A2 (fr) * 2002-02-06 2003-08-13 MERCK PATENT GmbH Traitement birefringent et son utilisation
WO2004025337A1 (fr) * 2002-09-11 2004-03-25 Merck Patent Gmbh Marquage birefringent
WO2005005727A1 (fr) * 2003-07-14 2005-01-20 Giesecke & Devrient Gmbh Element de surete

Also Published As

Publication number Publication date
EP2225417B1 (fr) 2014-06-18
US20100276488A1 (en) 2010-11-04
US8397995B2 (en) 2013-03-19
FR2925534A1 (fr) 2009-06-26
WO2009081035A2 (fr) 2009-07-02
EP2225417A2 (fr) 2010-09-08
FR2925534B1 (fr) 2010-02-12
BRPI0821705A2 (pt) 2015-06-16
CA2709826A1 (fr) 2009-07-02

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