This page describes how to generate a CTP curve from linear plates. If you need to fine tune an existing CTP correction curve ('curve-on-curve') look here: generate CTP correction curves based on existing plate curves

  • MeasureColor 4 Basic or higher license level
  • MeasureColor CTP combi color bar 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 task)
  • Embed the ‘MeasureColor CTP combi’ color bar in a test form or production job, make sure it is aligned vertically (printing direction)
  • Generate the printing plates, check linearity with a plate measurement device
  • Print the form according to your standard for solid inks
  • Let the printed sheet dry if applicable
  • Open the ‘ProcessControl Module’
  • Create a new job based on the proper reference. select a non-G7 Tolerance set and make sure the ‘MeasureColor CTP combi’ color bar is selected for this job
  • Measure the color bar and hit ‘Finish’
  • Analyse the result in the ‘Gamut’ view and check if the solids and overprint values match the chosen standard
  • Analyse the result in the ‘Dot gain’ view and check that there are no odd results. TVI curves should look natural but might be too high or too low of course.
  • If printed solids and overprint are OK and the (linear printed) TVI curves show no strange behaviors, it is time to generate the actual CTP compensation curve
  • Switch to the ‘CTP’ view. This is where we analyse the printed curves and (automatically) calculated CTP corrections.
  • To save a CTP correction curve in a native format, click on the ‘Save curve’ button
  • Set the file name and location and choose the format for your workflow: Agfa Apogee, Caldera RIP, Fuji XMF, GMG ColorServer, Kodak Harmony (Prinergy) or Screen Trueflow
  • Save the file to disk

You can now import the CTP curve in your Prepress system. To check the results, perform a standard quality check as described in the QuickStart document analysing print quality. If needed, you can fine-tune your current CTP curve as described in the QuickStart document generate CTP correction curves based on existing plate curves

  • generate_ctp_correction_curves_based_on_linear_plates.txt
  • Last modified: 2021/04/28 13:02
  • (external edit)