Originally Posted by
royphot
Hi John and Hedystafford (a real first name would help).
The Pro 9000 MkII only has 1 Black available.
I did also get green casts while experimenting with my Pro 9000 MkII. They only happened when printing Monos using my normal Printer Profile and not having the greyscale box ticked in the printer driver. Setting the Photoshop file mode to greyscale made no difference.
The problem with having to set the printer driver to Greyscale is that it is impossible to produce a neutral Mono tone within a print which has a Spot Colour. My only way round that was to put the paper through the printer twice. Once for the spot colour layer, printing as a colour image, and once for the mono layer with the printer set to Greyscale.
Since then I have gone to using Lyson Inks and have had to make new Profiles. I have made 2 Profiles for each paper, xxxColour & xxxMono. I made two so that, if needed, I could adjust them individually.
Using the mono profile (as it was made & without greyscale in the printer) I got a very slight magenta cast in a few tones. They can just be seen when printing a step wedge at the 70%,75% & 80% density steps. The printer profile could probably be tweaked to get rid of this, but so far I haven't bothered, because they don't really show up in real prints.
Setting the Printer to greyscale still gives beautiful neutral mono prints, but it does print much slower than when set for colour.
As I said earlier having the image set for RGB or Greyscale in Ps makes no difference whatsoever.
Roy