EP1279502B1 - Procédé de contrôle pour héliogravure - Google Patents

Procédé de contrôle pour héliogravure Download PDF

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Publication number
EP1279502B1
EP1279502B1 EP20020405296 EP02405296A EP1279502B1 EP 1279502 B1 EP1279502 B1 EP 1279502B1 EP 20020405296 EP20020405296 EP 20020405296 EP 02405296 A EP02405296 A EP 02405296A EP 1279502 B1 EP1279502 B1 EP 1279502B1
Authority
EP
European Patent Office
Prior art keywords
control
color
fields
printing
values
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP20020405296
Other languages
German (de)
English (en)
Other versions
EP1279502A1 (fr
Inventor
Karolina Rosenberger
Fabian Bönsch
Matthias Reinhold
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
3A Composites International AG
Original Assignee
Alcan Technology and Management Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from EP01810697A external-priority patent/EP1275502A1/fr
Application filed by Alcan Technology and Management Ltd filed Critical Alcan Technology and Management Ltd
Priority to EP20020405296 priority Critical patent/EP1279502B1/fr
Publication of EP1279502A1 publication Critical patent/EP1279502A1/fr
Application granted granted Critical
Publication of EP1279502B1 publication Critical patent/EP1279502B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/0036—Devices for scanning or checking the printed matter for quality control
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2233/00—Arrangements for the operation of printing presses
    • B41P2233/50—Marks on printed material
    • B41P2233/51—Marks on printed material for colour quality control

Definitions

  • the present invention relates to a method according to the preamble of claim 1.
  • the color concentration (relative composition of the inks of color concentrate, blend and solvent) is one of the most important parameters to control. It decisively influences the coloring of the process as well as the color and tonal quality of the printed product. The color concentration in turn depends on the nature of the substrate to be printed on which a particular color impression is to be produced. Today, quality is assessed almost exclusively by eye and with the help of densitometers.
  • the dot jobs begin to fuse with each other beyond a certain areal density, and color bridges are formed between the dots, whereby the color gaps are completely covered by an abrupt increase in the areal coverage with printing ink.
  • a further increase of the tonal values above the flooding area consequently only affects the color density by increasing the layer thickness of the color.
  • Control strips or control blocks of the prior art also have the disadvantage that the verification of the optical density (color density) of the individual primary colors is possible only by measuring the monochrome control fields (full-tone field) of the primary colors by means of densitometers. Therefore, the ink densities can not be continuously monitored by means of the aforementioned measuring method for reasons of effort in the print run. However, it is desirable to monitor the color densities of the primary colors continuously with as little effort as possible, so that in case of discrepancies for the purpose of error detection, the monochrome control fields of the primary colors (CMY) can be measured immediately.
  • CMS monochrome control fields of the primary colors
  • the multicolor control panels and / or the primary color (CMY) single-color grids preferably each contain a multi-range control field or control field as a solid field (100%).
  • CMSY primary colors
  • gray balance fields and thus also the achromatic black grids are advantageously created for the tonal values 5%, 20%, 40%, 60%, 80% and 100%, with 100% of a solid field equivalent.
  • control fields of the individual primary colors are preferably arranged in the order of the increasing or decreasing areal coverage, preferably directly and adjoining one another.
  • the gray axis created from black (K) is the reference for the CMY gray axis (gray balance fields) with regard to color density at certain tonal values (taking into account the dot gain). If there are marked differences from the visual comparison of the two control subfields, ie if the gray balance fields contain a color cast, then a discrepancy in the color densities of the primary colors (CMY) can be derived from this. This inconsistency can be due to a disturbed ink acceptance of one or more printing inks (CMY), for example.
  • the surfaces to be printed can, for example, from one of the aforementioned papers, plastics or metals. Furthermore, the surface to be printed can be a ceramic coating.
  • the arrangement allows to detect the color jump in the strip-shaped grid 11 visually or with a measuring device and to assign the color jump to the corresponding tonal value on the basis of the associated tonal values listed on the side.

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Facsimile Image Signal Circuits (AREA)

Claims (3)

  1. Procédé de détection de la transition de couleur pour le contrôle et/ou la commande de l'impression monochrome ou polychrome d'un procédé d'héliogravure, avec une bande de contrôle ou un bloc de contrôle contenant un agencement de zones de contrôle, caractérisé en ce que la bande de contrôle ou le bloc de contrôle contient une zone de contrôle de la continuité de couleur (10), sous la forme d'une zone tramée (11) en une couleur primaire, la zone de contrôle de la continuité de couleur (10) reproduisant sur son extension longitudinale une courbe des nuances croissant ou décroissant en permanence selon des valeurs de consigne, et des moyens d'affichage des valeurs de consigne pour les nuances (12) étant associés à la zone tramée en forme de bande (11) et la valeur de consigne pour les nuances correspondant au degré de couverture étant recherchée par les moyens d'affichage, à la production de la submersion de la zone tramée (11).
  2. Procédé selon la revendication 1, caractérisé en ce que les moyens d'affichage des valeurs de consigne pour les nuances (12) comportent une échelle des nuances associée à la zone tramée (11), sur un bord longitudinal de la zone de contrôle de la continuité de couleur (10).
  3. Procédé selon la revendication 1 ou 2, caractérisé en ce que la valeur de consigne pour les nuances (12) recherchée est reprise dans un processus de traitement des images, pour procéder aux corrections correspondantes.
EP20020405296 2001-07-12 2002-04-12 Procédé de contrôle pour héliogravure Expired - Lifetime EP1279502B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20020405296 EP1279502B1 (fr) 2001-07-12 2002-04-12 Procédé de contrôle pour héliogravure

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP01810697A EP1275502A1 (fr) 2001-07-12 2001-07-12 Plages de contrôle pour héliogravure en polychromie
EP01810697 2001-07-12
EP20020405296 EP1279502B1 (fr) 2001-07-12 2002-04-12 Procédé de contrôle pour héliogravure

Publications (2)

Publication Number Publication Date
EP1279502A1 EP1279502A1 (fr) 2003-01-29
EP1279502B1 true EP1279502B1 (fr) 2007-08-15

Family

ID=26077404

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020405296 Expired - Lifetime EP1279502B1 (fr) 2001-07-12 2002-04-12 Procédé de contrôle pour héliogravure

Country Status (1)

Country Link
EP (1) EP1279502B1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011012806A1 (de) 2010-03-24 2011-09-29 Heidelberger Druckmaschinen Ag Graubalancekorrektur eines Druckverfahrens
EP2506559A2 (fr) 2011-03-29 2012-10-03 Heidelberger Druckmaschinen AG Procédé de correction de la balance des gris d'un processus d'impression
CN103895375A (zh) * 2014-03-03 2014-07-02 深圳市科彩印务有限公司 平版胶印色度控制方法及平版胶印方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005060893C5 (de) * 2005-12-20 2019-02-28 Manroland Goss Web Systems Gmbh Verfahren zur Ermittlung eines drucktechnischen Messwertes

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1696530B1 (de) * 1964-02-07 1970-07-02 Firm Of John Dickinson Schneid UEberwachungsstreifen fuer die Anwendung bei lithographischen Druckverfahren
US4310248A (en) * 1980-04-24 1982-01-12 Meredith Nolan J Color control system
DE3483606D1 (de) * 1983-12-19 1990-12-20 Gretag Ag Verfahren, vorrichtung und farbmessstreifen fuer die druckqualitaetsbeurteilung.
GB8524483D0 (en) * 1985-10-04 1985-11-06 Foilwraps Ltd Gravure printing
DE4338976C3 (de) * 1993-11-15 2002-06-06 Fogra Forschungsgesellschaft D Anordnung von mehreren Kontrollfeldern

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011012806A1 (de) 2010-03-24 2011-09-29 Heidelberger Druckmaschinen Ag Graubalancekorrektur eines Druckverfahrens
US8537420B2 (en) 2010-03-24 2013-09-17 Heidelberger Druckmaschinen Ag Method for gray balance correction of a printing process
DE102011012806B4 (de) 2010-03-24 2022-07-07 Heidelberger Druckmaschinen Ag Graubalancekorrektur eines Druckverfahrens
EP2506559A2 (fr) 2011-03-29 2012-10-03 Heidelberger Druckmaschinen AG Procédé de correction de la balance des gris d'un processus d'impression
DE102011015306A1 (de) 2011-03-29 2012-10-04 Heidelberger Druckmaschinen Ag Verfahren zur Graubalancekorrektur eines Druckprozesses
CN103895375A (zh) * 2014-03-03 2014-07-02 深圳市科彩印务有限公司 平版胶印色度控制方法及平版胶印方法

Also Published As

Publication number Publication date
EP1279502A1 (fr) 2003-01-29

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