Hi Blacksimon
Thank you. I'll remember that in future. I'm sure you are right. I've just got in a bit of a rut with installing the Canon Driver version. It's so long ago now that i started doing this, (maybe back to v6.0) that I'm not sure exactly, but I have a memory of colour printing not giving the true colours with the standard Gutenprint MP180 driver. But by now, maybe the Gutenprint Driver has changed too. It's certainly much easier to just use the Gutenprint one that comes already to use with Knoppix.
Best wishes, John