analysing_print_quality

  • MeasureColor 4 Basic or higher license level
  • A typical Quality Assurance color bar like the ECI GrayControl bar, IDEAlliance color bar or Ugra/Fogra Mediawedge
  • In this QuickStart, we use the ECI GrayCon Mi1. eci_grayconm_i1_fogra39.pdf)
  • Compliant measurement device (XRite EyeOne, XRite 530939, XRite SpectroEye, Techkon SpectroDens, Techkon SpectroJet)
  • Measurement devices like the XRite Intellitrax and Techkon SpectroDrive are less suited for this QuickStart tutorial
  • Embed the ‘ECI GrayCon Mi1’ color bar in a test form or production job, make sure it is aligned vertically (printing direction)
  • Generate the printing plates
  • Print the form according to your standard for solid inks
  • Let the printed sheet dry if applicable

-plaatje inschieten 15.3 greycon-

  • Open the ‘ProcessControl Module’
  • Create a new job based on the proper reference and make sure the ‘ECI GrayCon Mi1’ color bar is selected for this job
  • Detailed job setup information can be found here: versions 15.3 and later | legacy versions
  • Measure the color bar and hit ‘Finish’
  • If not already shown by default (landing page) switch to the ‘Gamut view’

  • Shows the printed color gamut compared to the reference gamut (left)
  • Shows a graph with proposed correction for solid inks based on spectral analysis (ChromaPlus, default), Density differences or delta-L (top right)
  • Shows graphs for TVI (dot gain) differences in high light, mid tone and shadow areas (middle right)
  • Shows color drifting for substrate white and gray balance (bottom right)
  • A dashboard style overview of all printed solid inks, the overprint patches, substrate white and gray balance patches with their individual delta-E and pass/fail icons
  • Clicking on any of the patches will provide a detailed ‘Spot analysis view’ for that patch
  • Use MeasureColor’s ‘Solids’ correction graph in the ‘Gamut view’ as your first indicator if your inks print according to standard
  • Click on each individual patch to review its (Spot) detail
  • A solid ink that is printed with too much ink normally is: too dark, too strong (saturated)
  • A solid ink that is printed with too little ink on paper is normally: too light and too dull (less saturated)
  • A proper ink has a good saturation, a good hue angle and a good lightness

  • Shows TVI graphs for each printed color
  • You can toggle the visibility of individual colors by clicking on the color icon
  • You can show/hide Target curves, Printed curves and Tolerances to improve visibility
  • Shows detailed information about the target and printed dot gain values
  • Shows information on Solids correction and gray balance to help analyze the dot gain behavior
  • For most printing standards, C/M/Y have about the same default dot gain values so their curves should look the same
  • When you notice that a dot gain is very high for a specific color while the process should be calibrated, chances are that your solid ink is printed with too much ink as well (see solids correction graph on the top)

  • Shows a visual ‘Dot size and curves’ graph with functionality to show or hide colors and details
  • Shows detailed information per color
  • Has functions to save CTP curves or fine-tune existing curves
  • You can load an existing curve and finetune it (curve-oncurve)
  • You can average the CTP curve by using the ‘Average production data’ marker (only uses measurements that where made in ‘Production’ mode)
  • Shows two user selectable time-line based graphs to display delta-E, Density and dot gain trends for the loaded job
  • analysing_print_quality.txt
  • Last modified: 2021/04/28 13:02
  • (external edit)