On Tuesday 23 September 2008 05:20:47 am Torsten Neuer wrote:
> Hello,
>
> Am Dienstag, 23. September 2008 10:36:18 schrieb Dotan Cohen:
> > My printer has a stuck blue nozzle and I am trying to clean it.
> > Of the blue, yellow, red, and black cartridges, I want to only
> > print from the blue. I tried to configure a blue-255 colour and
> > the rest 0, however the printed image still uses a bit from the
> > red cartridge as the choice of colours differ from those in Gimp.
> > What colour could I configure, that would translate to blue only
> > from the printer?
>
> Printers are normally CMYK, not RGB. That is why 0000ff will also
> utilize the other cartridges of the printer, not only cyan.
> You will therefore have to select 100% C from CMYK colourspace in
> order to only print from the C cartridge - which is a bit awkward
> in Gimp, since the program has no direct CMYK support.
> Nevertheless, you can do so with the colour selector (get to the
> printer colour selection mode for CMYK colours). The colour will be
> translated to RGB 00ffff...
>
> HTH
>
>   Torsten

ImageMagick will convert from rgb to cmyk after saving the file from 
Gimp.  If the above RGB 00ffff is used then it should convert to Cyan 
(not exactly blue.)

-- 
John Culleton
Resources for every author and publisher:
http://wexfordpress.com/tex/shortlist.pdf
http://wexfordpress.com/tex/packagers.pdf
http://www.creativemindspress.com/newbiefaq.htm
http://www.gropenassoc.com/TopLevelPages/reference%20desk.htm
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