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(v13) Process separations

This page applies to Harlequin v13.1r0 and later; both Harlequin Core and Harlequin MultiRIP.

When a PostScript language file or PDF job uses process separations in /Separation or /DeviceN color spaces, for example:

  • [/Separation /Cyan /DeviceCMYK {0 0 0}]
  • [/Separation /Gray /DeviceGray {}]
  • [/DeviceN [/Cyan /Magenta] /DeviceCMYK {0 0}]

The RIP normally attempts to convert these spaces to /DeviceCMYK and color manage them as such. This was described in (v13) Decomposing a DeviceN colorant list.

This behavior can be controlled using the AdobeProcessSeparations user param:

<< /AdobeProcessSeparations true >> setuserparams

which, during interpretation, prevents color management of process colorants in /Separation and /DeviceN spaces.

AdobeProcessSeparations has no effect when color managing a transparency backdrop raster.

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