EP 0983853 B1 20030502 - Automatic device for detecting misprints on, for example, metallized webs
Title (en)
Automatic device for detecting misprints on, for example, metallized webs
Title (de)
Automatische Einrichtung zum Nachweis von Druckfehlern zum Beispiel auf metallisiertes Bahnmaterial
Title (fr)
Dispositif automatique de détection de défauts d'impression par example sur des bandes métallisées
Publication
Application
Priority
CH 178898 A 19980902
Abstract (en)
[origin: EP0983853A1] The device comprises a darkened housing (2) into which is fed the metallic strip (3) on rollers (4,5). The printed side of the strip is illuminated directly by flash lights (13,14) and indirectly a further flash lights (11,12) using a reflective diffusing surface (25). The objective lens of a video camera is located in a central opening in the diffuser to enable a section (7) of the strip to be examined. The objective lens is fitted with a semi-transparent filter (57) obliquely angled to reflect light received directly from the lower exterior lamp, which itself is fitted with a translucent diffuser. The lights and camera are located on a mounting assembly which can be moved within the housing to scan the full width of the strip. The camera is linked to a computer and monitor, to view and record reference and actual images, at pixel level, to detect print defects.
IPC 1-7
IPC 8 full level
B41F 33/14 (2006.01); B41F 33/00 (2006.01); G01N 21/84 (2006.01); G01N 21/892 (2006.01)
CPC (source: EP US)
B41F 33/0036 (2013.01 - EP US)
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
EP 0983853 A1 20000308; EP 0983853 B1 20030502; CA 2280522 A1 20000302; CA 2280522 C 20030128; CH 692847 A5 20021129; DE 69907344 D1 20030605; DE 69907344 T2 20040325; ES 2199508 T3 20040216; JP 2000074843 A 20000314; JP 3203237 B2 20010827; US 6496219 B1 20021217
DOCDB simple family (application)
EP 99116453 A 19990821; CA 2280522 A 19990819; CH 178898 A 19980902; DE 69907344 T 19990821; ES 99116453 T 19990821; JP 24889299 A 19990902; US 38898599 A 19990902