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Adjust CMYK curves for a job

PRISMAsync Print Server offers a CMYK editor with a pixel-precise preview to adjust the calibrated CMYK curves on job level for a better result.

There are two modes to edit the CMYK values of a job:

  1. Basic mode, for simple CMYK editing with sliders for quick and easy colour tweaking.

  2. Advanced mode, for precise CMYK editing.

IMPORTANT

  • Be aware that achieving a consistent reproduction of colours is difficult when you adjust CMYK curves on job level.

  • First check if the printer calibration delivers the required colour quality before you perform this procedure. (Learn about calibration)

This topic describes how to:

  • Open the CMYK editor

  • Adjust the CMYK curves in basic mode

  • Adjust the CMYK curves in advanced mode

Open the CMYK editor

  1. Touch [Jobs].

  2. Go to the location of the job

  3. Select the job you want to change.

  4. Touch [Edit], or double-tap the job to open the [Edit] window.

  5. Touch [Adjust image].

    The [Basic mode] window opens.

    CMYK editor in basic mode

Adjust the CMYK curves in basic mode

  1. Touch the slider icon to browse through the thumbnails.

  2. Select the thumbnail of the pages you want to adjust.

    When you selected all pages, touch one thumbnail longer (long touch) to undo the selection.

  3. Use the zoom function to check the result of the adjustment in a specific area.

  4. Use your finger to pan the image.

  5. Adjust the density values for the four colours.

  6. Touch [OK].

Adjust the CMYK curves in advanced mode

Use the table below to adjust the CMYK curves in advanced mode.

CMYK editor in advanced mode

Task

Instruction

Go to the advanced mode

  1. Touch [Advanced mode].

Preserve colours

  1. Touch the dropper icon.

  2. Position the target icon with your finger on the colour you want to preserve.

  3. Touch [Add points].

Apply a CMYK-curve preset

  1. Touch the load icon.

  2. Select a CMYK-curve preset.

  3. Touch [Done].

  4. Check the result in the preview.

Define the colour clipping range

  1. Touch and drag the lower left-hand wedge .

  2. Touch and drag the upper right-hand wedge .

Adjust the curves manually

  1. Touch the raster icon.

  2. Touch the curve to add a control point .

    To delete a control point, first select a control point. Then, touch the trash icon.

  3. Touch the + and - signs to move the control point or drag the control point with your finger.

  4. Check the result in the preview.

  5. When ready, select a new colour.

Adjust the contrast of all colours

  1. Touch the contrast icon.

  2. Use the slider to adjust the contrast.

  3. Check the result in the preview.

Parent topic:
Change jobs
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