EP 0650853 B1 19971015 - Process for obtaining double picture prints on hard surfaces
Title (en)
Process for obtaining double picture prints on hard surfaces
Title (de)
Verfahren zum Erhalten von zwei Druckbildern auf harten Oberflächen
Title (fr)
Procédé d'obtention de deux impressions sur des surfaces rigides
Publication
Application
Priority
EP 93500148 A 19931102
Abstract (en)
[origin: EP0650853A1] Such is especially useful as a security system and constituent element in designing coins, medals and the like, and comprises providing the surface at issue with a relief formed by a mesh of straight parallel furrows (1), the side walls (2) and (3) of which are at a given angle to the general surface plane, the said furrows being identical in size and shape, and preferably having a triangular isosceles section, in order that one of its faces or walls (2) is parallel in all, as is the case of the other (3), one of the two drawings being printed on a group of faces (2) of such ridges and the other drawing on the second group of faces (3) of such ridges, and more specifically by providing bas-reliefs (4) and (5) on such faces (2) and (3), based upon a considerably greater inclination at given areas of such faces, specifically at the areas participating in the respective drawing.
IPC 1-7
IPC 8 full level
A44C 21/00 (2006.01); B44C 1/24 (2006.01)
CPC (source: EP)
A44C 21/00 (2013.01); B44C 1/24 (2013.01); B42D 25/324 (2014.10)
Designated contracting state (EPC)
AT BE CH DE DK FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0650853 A1 19950503; EP 0650853 B1 19971015; AT E159208 T1 19971115; DE 69314640 D1 19971120; DE 69314640 T2 19980226; DK 0650853 T3 19971103; GR 3025730 T3 19980331; HK 1004064 A1 19981113
DOCDB simple family (application)
EP 93500148 A 19931102; AT 93500148 T 19931102; DE 69314640 T 19931102; DK 93500148 T 19931102; GR 970403379 T 19971222; HK 98103135 A 19980415