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 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.