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QTR-Quadtone RIP

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Re: [QuadtoneRIP] Colour cast in prints using only the gray inks

2007-10-18 by Michael King

Also what your spectro reads is going to depend on the colour of the paper
the inks are printed on.

On 18/10/2007, Michael King <drmrking@...> wrote:
>
> Isn't that because the blacks are not neutral. They are naturally warm
> carbon?
>
> Mike
>
>
>  On 18/10/2007, etlblbt <bill.brandt@...> wrote:
> >
> >   Hello,
> > I have just started trying quadtone RIP and I have tried to make
> > my first profile for my EPSON R2400 which is loaded with the standard
> > inkset. In the ink descriptor file I have set the density values for
> > the light black and light light black inks (measured using a
> > spectrophotometer) and have set all the other inks to 'not used'.
> >
> > When I print out a test strip (the 21x4 random) and analyse it with my
> > spectrophotometer I can see that the colours are not neutral (when
> > converted to RGB there is quite a lot less blue than the other two
> > channels) and the print visually has a brownish tone.
> >
> > Is there something else I need to do to prevent the colour inks from
> > being used other than setting them to 'not used' in the ink descriptor
> > file.
> >
> > Apologies if this is all in a FAQ somewhere. If you could point me to
> > it that would be great.
> >
> > Regards, Bill Brandt
> >
> > 
> >
>
>


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