Global Patent Index - EP 0730959 B1

EP 0730959 B1 2000-01-19 - Method of producing a reference model to be used for automatic quality control of images on paper

Title (en)

Method of producing a reference model to be used for automatic quality control of images on paper

Title (de)

Verfahren zur Herstellung eines Referenzmodells für automatische Qualitätskontrolle von Bildern auf Papier

Title (fr)

Procédé de production d'un modèle de référence destiné à être utilisé pour le contrôle automatique de la qualité d'impression d'une image sur du papier

Publication

EP 0730959 B1 (FR)

Application

EP 96810121 A

Priority

IT MI950430 A

Abstract (en)

[origin: EP0730959A1] The electronically-produced reference model is made by preparing a group of test sheets with complete images, printed by the same method and procedure as that used for the serial print run. The printed images are registered and the density values for the pixels making up the images are memorised. Each pixel is given a minimum value in the assembly of images in a group, and a model of the printed design is formed during the first printing phase. The process is repeated during subsequent printing phases, with the pixel density values (a10-a23) maintained at their required levels.

IPC 1-7

B41F 33/00

IPC 8 full level

B41F 33/14 (2006.01); B41F 33/00 (2006.01); G01N 21/88 (2006.01); G06T 1/00 (2006.01); G06T 7/00 (2006.01)

CPC

B41F 33/0081 (2013.01)

DCS

AT CH DE FR GB IT LI SE

DOCDB simple family

EP 0730959 A1 19960911; EP 0730959 B1 20000119; AT 188916 T 20000215; AU 4585296 A 19960919; AU 692991 B2 19980618; CA 2171165 A1 19960908; CA 2171165 C 20070417; CN 1074996 C 20011121; CN 1138692 A 19961225; DE 69606206 D1 20000224; DE 69606206 T2 20000810; IT 1276010 B1 19971024; IT MI950430 A1 19960909; IT MI950430 D0 19950307; JP 2007168449 A 20070705; JP H08276569 A 19961022; KR 100362023 B1 20030509; KR 960033772 A 19961022; RU 2161792 C2 20010110; US 5778088 A 19980707