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Pub. No.:    WO/2010/115928    International Application No.:    PCT/EP2010/054597
Publication Date: 14.10.2010 International Filing Date: 07.04.2010
C09D 11/00 (2006.01)
Applicants: SICPA HOLDING SA [CH/CH]; Avenue de Florissant 41 CH-1008 Prilly (CH) (For All Designated States Except US).
Bank of Canada Department of Banking Operations [CA/CA]; 234 Wellington Street Ottawa, ON, K1A 0G9 (CA) (For All Designated States Except US).
KRUEGER, Jessica [DE/CH]; (CH) (For US Only).
DEGOTT, Pierre [FR/CH]; (CH) (For US Only).
MACPHERSON, Charles [CA/US]; (US) (For US Only).
DESPLAND, Claude-Alain [CH/CH]; (CH) (For US Only).
SCHMID, Mathieu [CH/CH]; (CH) (For US Only)
Inventors: KRUEGER, Jessica; (CH).
DEGOTT, Pierre; (CH).
MACPHERSON, Charles; (US).
DESPLAND, Claude-Alain; (CH).
SCHMID, Mathieu; (CH)
Agent: BUBLAK, Wolfgang; Bardehle Pagenberg Prinzregentenplatz 7 81675 München (DE)
Priority Data:
PCT/IB2009/005198 07.04.2009 IB
Abstract: front page image
(EN)The invention discloses a reversibly piezochromic security element for the forgery-protection of value documents, the security element being characterized in that it comprises a collection of optically contrasting pigment particles in a film or a coating layer of an elastic polymer. In a particular embodiment, the particles are optically variable pigment flakes, oriented in a position which is substantially different from an alignment in the plane of the film or coating layer.
(FR)La présente invention concerne un élément piézochrome de sécurité réversible pour la protection de documents de valeur contre la contre-façon. L'élément de sécurité se caractérise en ce qu'il comprend une collection de particules de pigment optiquement contrastant dans un film ou une couche de revêtement d'un polymère élastique. Dans un mode de réalisation particulier, les particules sont des paillettes de pigment optiquement variables, orientées dans une position qui est sensiblement différente d'un alignement dans le plan du film ou de la couche de revêtement.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)