Global Patent Index - EP 1251011 B1

EP 1251011 B1 20060607 - Method for varying full-tone colour density in offset printing inside a rotation printing machine

Title (en)

Method for varying full-tone colour density in offset printing inside a rotation printing machine

Title (de)

Verfahren zum Variieren der Farbdichte des Volltons beim Offset-Druck innerhalb einer Rotationsdruckmaschine

Title (fr)

Méthode pour varier la densité en pleine teinte des couleurs pour l'impression offset dans une machine d'impression rotative

Publication

EP 1251011 B1 20060607 (DE)

Application

EP 02008377 A 20020412

Priority

DE 10119368 A 20010420

Abstract (en)

[origin: EP1251011A2] The method involves using a color application system that can provide a constant color quantity, and a binary illustration of a printing form. A base raster of grid points is produced for area-variable image information on the printing form to define the area coverage. A fine micro-raster is placed under the base raster so that the area coverage of the base raster is reduced by a variable percentage between 0% and 100%.

IPC 8 full level

B41M 1/00 (2006.01); B41C 1/05 (2006.01); B41C 1/10 (2006.01); B41F 33/00 (2006.01); B41M 1/04 (2006.01); B41M 1/06 (2006.01); B41M 1/10 (2006.01)

CPC (source: EP US)

B41C 1/05 (2013.01 - EP US); B41C 1/10 (2013.01 - EP US); B41F 33/0027 (2013.01 - EP US); B41M 1/00 (2013.01 - EP US); B41M 1/04 (2013.01 - EP US); B41M 1/06 (2013.01 - EP US); B41M 1/10 (2013.01 - EP US); B41N 1/12 (2013.01 - EP); B41P 2233/51 (2013.01 - EP US)

Designated contracting state (EPC)

CH DE FR GB LI

DOCDB simple family (publication)

EP 1251011 A2 20021023; EP 1251011 A3 20031210; EP 1251011 B1 20060607; CA 2382338 A1 20021020; CA 2382338 C 20070619; DE 10119368 A1 20021121; DE 10119368 B4 20040909; DE 50207059 D1 20060720; US 2002152911 A1 20021024; US 6701847 B2 20040309

DOCDB simple family (application)

EP 02008377 A 20020412; CA 2382338 A 20020418; DE 10119368 A 20010420; DE 50207059 T 20020412; US 12254002 A 20020415