EP 1219420 B1 20080416 - Device for scanning register marks in a multicolour printing machine
Title (en)
Device for scanning register marks in a multicolour printing machine
Title (de)
Vorrichtung zur Abtastung von Registermarken in einer Mehrfarbendruckmaschine
Title (fr)
Dispositif de lecture de marques de repérage dans une machine d'impression polychrome
Publication
Application
Priority
CH 25282000 A 20001227
Abstract (en)
[origin: US2002080430A1] Scanning device (1) for register marks (21, 22, 31, 32) printed onto a substrate (2) travelling into a polychrome printing machine. This device comprises at least one light source (3, 4) enlightening, onto the substrate (2), a lighting area (5) crossed by the register marks (21, 22, 31, 32), an optic (6) which allows obtaining onto a photosensitive element (7) the images of said register marks named as a plurality of portions (8) successively scanned with a certain scanning rate, as well as a microprocessor (9) driving the light of the light source (3, 4) and controlling electric pulses issued by pixels (17) of the photosensitive element (7). The source (3, 4) enlightens the lighting area (5) of the substrate (2) with at least one modulation of its color and/or of its intensity during the simultaneous or sequential scanning of at least two register marks. (21, 22, 31, 32).
IPC 8 full level
B41F 33/00 (2006.01); B41F 33/14 (2006.01); G01B 11/00 (2006.01)
CPC (source: EP US)
B41F 33/0081 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 1219420 A1 20020703; EP 1219420 B1 20080416; CH 694184 A5 20040831; DE 60133620 D1 20080529; DE 60133620 T2 20090520; JP 2002240247 A 20020828; US 2002080430 A1 20020627; US 7170648 B2 20070130
DOCDB simple family (application)
EP 01128209 A 20011128; CH 25282000 A 20001227; DE 60133620 T 20011128; JP 2001394437 A 20011226; US 2651401 A 20011224