[cups.general] Canon Pixma iP4500 - problem with colours

[Rick Cochran]

I have Canon printers, and I needed to purchase TurboPrint in order to get them 
to print properly.  I consider it well worth the cost.

-Rick

Mike Clarke wrote:
> I've just installed a Canon Pixma iP4500 on a FreeBSD 6.3 system using CUPS
> and gutenprint. Black printing is fine but I've got problems with colours.
> The colour wheel on the CUPS test page comes out as a psychedelic
> collection of brightly coloured rings.
> 
> This isn't a physical problem with the printer, I get good results when
> printing from Windows.
> 
> If I print from Gimp then the correct colours appear but they are very dark
> and "muddy". I can improve this a bit by fiddling about with the Gimp
> printer settings but the results still aren't as good as I can get from
> Windows. Printing from any other application just produces totally wrong
> psychedelic colours. There's an example showing an original file and a
> couple of scans of prints at <http://www.milibyte.co.uk/colours.pdf>. The
> images have lost some quality in the scanning but effectively demonstrate
> what's happening.
> 
> I'm using the ppd file generated
> from /usr/local/share/cups/model/gutenprint/5.1/en_GB/stp-bjc-PIXMA-iP4500.5.1.ppd.gz.
>