EP 0178232 B1 19880713 - IDENTITY DOCUMENT PROTECTED AGAINST FALSIFICATION AND METHOD FOR MANUFACTURING THE SAME
Title (en)
IDENTITY DOCUMENT PROTECTED AGAINST FALSIFICATION AND METHOD FOR MANUFACTURING THE SAME
Publication
Application
Priority
FR 8415607 A 19841011
Abstract (en)
[origin: US4790566A] An identity document has graphical information printed on a support and including uncoded alphanumerical information which is specific to a holder of the document or to the document. The surface of the support is broken down into a network of macropixels each having a predetermined average light absorption level. Each of the micropixels in turn consists of a dot pattern matrix of micropixels each having a light absorption level selected among at least two predetermined levels and distributed for the average absorption of each of the macropixels to be said predetermined average light absorption level and for constituting a screen which reproduces on a microscopic scale part at least of the uncoded specific information.
IPC 1-7
IPC 8 full level
B42D 15/10 (2006.01); B44F 1/12 (2006.01)
CPC (source: EP US)
B42D 25/00 (2014.10 - EP US); B42D 25/30 (2014.10 - US); B42D 25/405 (2014.10 - US); B42D 25/485 (2014.10 - EP US); B42D 2035/08 (2022.01 - EP); B42D 2035/14 (2022.01 - EP); B42D 2035/20 (2022.01 - EP); B42D 2035/44 (2022.01 - EP); B42D 2035/50 (2022.01 - EP); Y10S 283/904 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB IT SE
DOCDB simple family (publication)
EP 0178232 A1 19860416; EP 0178232 B1 19880713; DE 3563714 D1 19880818; FR 2571663 A1 19860418; FR 2571663 B1 19870116; US 4790566 A 19881213
DOCDB simple family (application)
EP 85401984 A 19851011; DE 3563714 T 19851011; FR 8415607 A 19841011; US 78685385 A 19851011