EP 0394681 B1 19950201 - Method for regulating the ink supply in a printing machine with limitation of the ink film thickness and of the tonal value increase.
Title (en)
Method for regulating the ink supply in a printing machine with limitation of the ink film thickness and of the tonal value increase.
Title (de)
Verfahren zur Steuerung der Farbführung einer Druckmaschine mit Begrenzung der Schichtdicke und der Tonwertzunahme.
Title (fr)
Procédé pour contrÔler l'encrage dans une machine d'impression avec limitation de l'épaisseur de la couche d'encre et de l'augmentation de la valeur tonale.
Publication
Application
Priority
DE 3913382 A 19890424
Abstract (en)
[origin: EP0394681A2] In the regulation of the ink supply according to colorimetric or densitometric parameters, process-related influences for optimum adaptation to the printing process and to the colour sensitivity of the human eye should not be left unconsidered during printing. <??>For single-colour and multi-colour regulation, methods are therefore proposed which actuate an intended location (Soll) considering the independent boundary conditions - maximum permissible tonal value increase(s) and maximum permissible ink film thickness(s), which intended location is situated both within the tolerable tonal value increase(s) (ZSoll +/- ZTol or ZSolli +/- ZToli) and within the colour tolerance (ETol) or density tolerance (DVTol) or within the tolerance area (TolR). If the intended location (Soll1) does not fulfil these two independent boundary conditions simultaneously, the tolerance range of the tonal value increase(s) is widened and an intended location (Soll2 or Opt) is checked to establish whether it now obeys both boundary conditions simultaneously.
IPC 1-7
IPC 8 full level
B41F 31/02 (2006.01); B41F 33/00 (2006.01)
CPC (source: EP US)
B41F 33/0036 (2013.01 - EP US); B41P 2233/51 (2013.01 - EP US)
Citation (examination)
EP 0324718 A1 19890719 - GRETAG AG [CH], et al
Designated contracting state (EPC)
CH DE FR GB IT LI SE
DOCDB simple family (publication)
EP 0394681 A2 19901031; EP 0394681 A3 19910626; EP 0394681 B1 19950201; CA 2012050 A1 19901024; CA 2012050 C 19931207; DE 3913382 A1 19901025; DE 3913382 C2 19951214; DE 59008391 D1 19950316; JP H02297442 A 19901207; JP H074925 B2 19950125; US 5023812 A 19910611
DOCDB simple family (application)
EP 90105665 A 19900326; CA 2012050 A 19900313; DE 3913382 A 19890424; DE 59008391 T 19900326; JP 10440790 A 19900421; US 51392990 A 19900424