ATE110633T1 - METHOD OF CONTROLLING THE COLORING OF PRINTED PRODUCTS. - Google Patents

METHOD OF CONTROLLING THE COLORING OF PRINTED PRODUCTS.

Info

Publication number
ATE110633T1
ATE110633T1 AT91119212T AT91119212T ATE110633T1 AT E110633 T1 ATE110633 T1 AT E110633T1 AT 91119212 T AT91119212 T AT 91119212T AT 91119212 T AT91119212 T AT 91119212T AT E110633 T1 ATE110633 T1 AT E110633T1
Authority
AT
Austria
Prior art keywords
ink
full
tone
densities
measuring field
Prior art date
Application number
AT91119212T
Other languages
German (de)
Inventor
Joachim Mueller
Original Assignee
Roland Man Druckmasch
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
Application filed by Roland Man Druckmasch filed Critical Roland Man Druckmasch
Application granted granted Critical
Publication of ATE110633T1 publication Critical patent/ATE110633T1/en

Links

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
    • B41F33/0045—Devices for scanning or checking the printed matter for quality control for automatically regulating the ink supply

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)
  • Coloring (AREA)

Abstract

The invention relates to a method for controlling inking of printed products which are produced on a printing machine operating by autotypy, in particular a sheet-fed offset printing machine. Also printed on the print sheet is a print control strip, which contains a measuring field of specific halftone value for each ink to be printed in each ink metering zone and, additionally, a full-tone measuring field in at least one ink metering zone. If the inking is to be tuned to a prescribed desired area coverage (FDSoll), the Murray-Davies formula is used to calculate desired halftone ink densities (DRN1Soll, DRM1Soll) from the full-tone ink densities (DVN1, DVM1) measured on the full-tone measuring fields. If more than one full-tone measuring field is present in the print control strip, it is possible, on the one hand, to average over these desired halftone ink densities (DRN1Soll, DRM1Soll) calculated in this way, the mean value then being used as desired halftone ink density for all ink metering zones to be controlled. On the other hand, it is possible if more than one full-tone measuring field is present in the pressure control strip to average over the measured full-tone densities (DV), and then to use the Murray-Davies formula to calculate a new desired halftone ink density value. Thus, in each control operation new desired halftone ink densities are calculated, and the ink metering zones are controlled accordingly.
AT91119212T 1990-12-13 1991-11-12 METHOD OF CONTROLLING THE COLORING OF PRINTED PRODUCTS. ATE110633T1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4039818A DE4039818C2 (en) 1990-12-13 1990-12-13 Process for controlling the coloring of printed products

Publications (1)

Publication Number Publication Date
ATE110633T1 true ATE110633T1 (en) 1994-09-15

Family

ID=6420240

Family Applications (1)

Application Number Title Priority Date Filing Date
AT91119212T ATE110633T1 (en) 1990-12-13 1991-11-12 METHOD OF CONTROLLING THE COLORING OF PRINTED PRODUCTS.

Country Status (3)

Country Link
EP (1) EP0490093B1 (en)
AT (1) ATE110633T1 (en)
DE (2) DE4039818C2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4229267A1 (en) * 1992-09-02 1994-03-03 Roland Man Druckmasch Method for controlling the printing process on an autotypically operating printing machine, in particular sheet-fed offset printing machine
DE4401536A1 (en) * 1994-01-20 1995-07-27 Heidelberger Druckmasch Ag Method for controlling or regulating printer
DE19703129B4 (en) * 1997-01-29 2014-08-21 Heidelberger Druckmaschinen Ag Method for evaluating the quality of a printed image produced in multicolor printing on a substrate
WO2003033266A1 (en) † 2001-10-15 2003-04-24 Toppan Printing Co., Ltd. Printing method, printed matter, and printing controller
DE102004061469A1 (en) 2004-12-18 2006-07-13 Man Roland Druckmaschinen Ag Method for controlling the color in an offset printing machine
DE102018121301A1 (en) * 2018-08-31 2020-03-05 Koenig & Bauer Ag Method for setting a layer thickness of an opaque coating material to be applied to a substrate by an application device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DD156239A1 (en) * 1981-01-07 1982-08-11 Eva Luebbe METHOD FOR CORRECTING DEVIATIONS FROM INSERTION AND HEATING ON OFFSET PRINTING MACHINES
DE3440706A1 (en) * 1984-11-07 1986-05-07 grapho metronic Meß- und Regeltechnik GmbH & Co, 8000 München Method for the open-loop or closed-loop control of the inking of printed products
DE3687074D1 (en) * 1985-03-21 1992-12-17 Felix Brunner METHOD, CONTROL DEVICE AND AUXILIARY TO ACHIEVE A UNIFORM PRINT RESULT ON AN AUTOTYPICAL MULTICOLOR OFFSET PRINTING MACHINE.
JPS6328649A (en) * 1986-07-22 1988-02-06 Dainippon Screen Mfg Co Ltd Control method of dot gain value in offset calibrator
DE3643721A1 (en) * 1986-12-20 1988-06-30 Heidelberger Druckmasch Ag PRINT CONTROL STRIP

Also Published As

Publication number Publication date
EP0490093B1 (en) 1994-08-31
EP0490093A1 (en) 1992-06-17
DE4039818C2 (en) 1994-09-15
DE59102735D1 (en) 1994-10-06
DE4039818A1 (en) 1992-06-17

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Legal Events

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