QTR-Quadtone RIP

Yes you need to add a bit of magenta to the mix to eliminate the greenish
cast.
I would check out Paul Roark's work for more info on this.

Mike

On 27 January 2011 12:15, Terry <TerryGls@...> wrote:

>
>
> Mike
>
> Actually trying to understand the "logic" of the settings.
> I see QTR is basically set up for a gray second or third ink (and the
> relative densities make sense) and my question related to a color ink as a
> second ink probably doesn't make sense with QTR.
>
> What I have been playing with is how to eliminate the greenish cast I get
> with printing with the PK only Epson Black ink.
>
> Thanks, Terry
>
>
> --- In QuadtoneRIP@yahoogroups.com <QuadtoneRIP%40yahoogroups.com>,
> Michael King <drmrking@...> wrote:
> >
> > Terry,
> >
> >
> > > 3) If you have the PK (or MK) ink set for 75 and a Second ink at 35
> with
> > > > the Default Ink Limit Blank, what is the total max density the
> printer
> > > > produces? Is it 75 + 40 = 115?
> > > >
> > > No this is per channel so you have 75 for PK and 35 for the 2nd ink.
> > > The max density depends on the relative ink densities of the two inks.
> > >
> > > I'm using a R800 / R1800 standard Epson Inks and if my second ink is
> Blue
> > > in the above example (PK=75, Blue=40), how is the Relative Ink Density
> > > determined?
> > >
> >
> >
> > By printing targets in calibration mode. See
> > http://www.diallophotography.com/pdfs/QTRworkflow.pdf
> >
> > What are you actually trying to figure out with these questions?
> > Might be easier to just ask the question you are trying to answer :)
> >
> > Mike
> >
> >
> > >
> > > --- In QuadtoneRIP@yahoogroups.com <QuadtoneRIP%40yahoogroups.com><QuadtoneRIP%
> 40yahoogroups.com>,
>
> > > Michael King <drmrking@> wrote:
> > > >
> > > > Terry,
> > > >
> > > > The default is just that - it is used when there is no ink limit
> selected
> > > > for that channel
> > > >
> > > > So -
> > > >
> > > > > This is a basic question that I'm unclear about. I have used the
> Forum
> > > > > Search feature and not come up with a clear answer.
> > > > >
> > > > > 1) If you have the PK (or MK) ink set for 75 and the default blank,
> > > does
> > > > > that mean the PK prints at 75% of the maximum amount of ink the
> printer
> > > will
> > > > > release?
> > > > >
> > > > Yes for that PK channel.
> > > >
> > > > > 2) If you have the PK (or MK) ink set for 75 and the Default Ink
> Limit
> > > at
> > > > > say 50, what is the amount of ink the printer lays down?
> > > > >
> > > > 75
> > > >
> > > > >
> > > > > 3) If you have the PK (or MK) ink set for 75 and a Second ink at 35
> > > with
> > > > > the Default Ink Limit Blank, what is the total max density the
> printer
> > > > > produces? Is it 75 + 40 = 115?
> > > > >
> > > > No this is per channel so you have 75 for PK and 35 for the 2nd ink.
> > > > The max density depends on the relative ink densities of the two
> inks.
> > > >
> > > > >
> > > > > 4) If you have the PK (or MK) ink set for 75 and a second ink at 40
> > > with
> > > > > the Default Ink Limit at 90, what is the total max density the
> printer
> > > > > produces?
> > > > >
> > > > The max density depends on the relative ink densities of the two
> inks. as
> > > > per question (3). Remember the default ink limit is ignored when you
> set
> > > an
> > > > ink limit for a channel.
> > > >
> > > > Mike
> > > >
> > > > >
> > > > > Thanks, Terry
> > > > >
> > > > >
> > > > >
> > > >
> > > >
> > > > [Non-text portions of this message have been removed]
> > > >
> > >
> > >
> > >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
>  
>


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