[Openicc] The OutputIntent and Color Managed Printing

[Gerhard Fuernkranz]

Am 20.05.2013 18:03, schrieb Richard Hughes:
> The conclusions we came to were:
>
> * OutputIntent is designed to be set as a standard profile, e.g. FOGRA39L

According to the PDF spec (>= 1.4), it can bei either a well-known name referring to a standard printing condition (in this case no embedded ICC profile is needed), but it can also be an arbitrary, user-defined printing condition (in this case it is mandatory to embed a corresponding ICC profile in the output intent dictionary).

Furthermore, more than one output intent (i.e. an arary of output intent dictionaries) can be present in a PDF document.

> * Ghostscript uses the OutputIntent as a proofing profile and the
> sOutputICCProfile is used to specify the print profile of the output
> device

The presence of (an) output intent(s) in a PDF document basically suggets that re-targeting is likely necessary, if none of the output intents matches the sOutputICCProfile color space. But re-targeting is IMO not necessarily the same as proofing.

Best Regards,
Gerhard