[Openicc] Printing Plans GhostScript / sRGB / ICC

[Graeme Gill]

Hal V. Engel wrote:
> The only time pass through or not is ambiguous is when there is no
> OutputIntent and the objects are tagged as DeviceXXX and there is only one
> DeviceXXX type used and it matches the printer color mode.  A CM aware app
> wanting it's already CMed spool file to pass through should set the profiles of
> the embedded objects == the OutputIntent and it will get pass through since
> this is completely unambiguous.  The main thing is to make sure that
> pdftoraster honors OutputIntent.

Relying on matching profiles is pretty dodgy, and provides no
mechanism for necessary control over calibration state.

For doing calibration runs, both profile based modifications
and calibration should be disabled. Then there is the distinction
between native device channels (light black, medium black, black)
and composite device channels (light/medium/full blended into
a single black channel). If you don't want to have to go
around again at some later stage (or deal with lots of stuff
that doesn't work properly), then now is the time to anticipate
these requirements.

Graeme Gill.