EP 1348575 A1 20031001 - Security paper and other security items
Title (en)
Security paper and other security items
Title (de)
Sicherheitspapier und andere Sicherheitsartikel
Title (fr)
Papier de sécurité et autres articles de sécurité
Publication
Application
Priority
EP 02007000 A 20020327
Abstract (en)
A novel security item is proposed which is characterised by at least one security element having at least one segment comprising at least one latent UV or IR absorber (III). A latent absorber is a compound or composition capable of liberating a UV absorber on demand. Preferentially, the latent absorber is converted to its absorbing form in a spatially resolved manner (III) thus providing the desired information as latent image. Information imprinted within a substrate containing said absorbers is invisible to the naked eye. Moreover, the information is also invisible under UV irradiation. Only if a photoluminescent screen or background is used under UV irradiation, the "imprinted" information becomes apparant as a shadow image on the photoluminescent screen, since, in the areas where the latent absorber has been converted to the UV absorber, the UV light is being absorbed and does not reach the photoluminiscent device. <IMAGE>
IPC 1-7
IPC 8 full level
B41M 3/14 (2006.01); B42D 15/00 (2006.01); B42D 15/10 (2006.01)
CPC (source: EP US)
B41M 3/142 (2013.01 - EP); B42D 25/00 (2014.10 - EP); B42D 25/21 (2014.10 - US); B42D 25/29 (2014.10 - EP); B42D 25/382 (2014.10 - EP); B42D 25/387 (2014.10 - EP)
Citation (applicant)
- GB 1123274 A 19680814 - VIRGINIA LAMINATING COMPANY
- US 5005873 A 19910409 - WEST MICHAEL A [GB]
- GB 2300596 A 19961113 - PORTALS LTD [GB]
- US 5360235 A 19941101 - DRUMMETER LOUIS F [US], et al
- EP 0952467 A1 19991027 - JOHNSON & JOHNSON VISION PROD [US]
- EP 0097841 A1 19840111 - GEN ELECTRIC [US]
- US 3391110 A 19680702 - COLEMAN RALPH A
- US 5098445 A 19920324 - HUNG WILLIAM M [US], et al
Citation (search report)
- [X] EP 0982149 A1 20000301 - DAINIPPON PRINTING CO LTD [JP]
- [X] WO 0142031 A1 20010614 - LASER LOCK TECHNOLOGIES INC [US], et al
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
EP 1348575 A1 20031001; AU 2003226672 A1 20031008; WO 03080364 A1 20031002
DOCDB simple family (application)
EP 02007000 A 20020327; AU 2003226672 A 20030320; EP 0302905 W 20030320