QTR-Quadtone RIP

Hi all together! I have made a nice linearisation with my densitometer and my Eye-One using 
our own 7-Step-B+W-Ink-Set called "Carboprint-Ink" for Epson 2200 (in Germany: Epson 
2100) and the QTR for MAC Tiger. The only problem: I cannot get the highest possible d-max 
(thats around 1.76) on Hahnemühles Photo Rag. The max I get with QTR is 1.64 with 
boost_K:100 and grey_overlap: 10. I measure the 100% point at the 21-random-stepwedge. 
My questions: 1. what can I do more to get a higher d-max? 2. for printing the 21-random-
stepwedge is it neccessary to convert the stepwedge in the new QTR-gray workingspace and 
print with color-management incl. the QTR grey matt printer profile or do I have to print 
withour any color-management at this step? Thanks a lot for your help!!

dieterneubert56 wrote:
> Hi all together! I have made a nice linearisation with my densitometer and my Eye-One using 
> our own 7-Step-B+W-Ink-Set called "Carboprint-Ink" for Epson 2200 (in Germany: Epson 
> 2100) and the QTR for MAC Tiger. The only problem: I cannot get the highest possible d-max 
> (thats around 1.76) on Hahnem\ufffdhles Photo Rag. The max I get with QTR is 1.64 with 
> boost_K:100 and grey_overlap: 10. I measure the 100% point at the 21-random-stepwedge. 
> My questions: 1. what can I do more to get a higher d-max? 2. for printing the 21-random-
> stepwedge is it neccessary to convert the stepwedge in the new QTR-gray workingspace and 
> print with color-management incl. the QTR grey matt printer profile or do I have to print 
> withour any color-management at this step? Thanks a lot for your help!!

Could it be the pigment load of your own black ink ?  Is a 
higher load possible or did you already pick the 85% patch and 
more pigment doesn't deliver more density ?

Ernst

                    --
           Ernst Dinkla


www.pigment-print.com
(         unvollendet         )

--- In QuadtoneRIP@yahoogroups.com, Ernst Dinkla <E.Dinkla@...> wrote:
>
> dieterneubert56 wrote:
> > Hi all together! I have made a nice linearisation with my densitometer and my Eye-
One using 
> > our own 7-Step-B+W-Ink-Set called "Carboprint-Ink" for Epson 2200 (in Germany: 
Epson 
> > 2100) and the QTR for MAC Tiger. The only problem: I cannot get the highest possible 
d-max 
> > (thats around 1.76) on Hahnemühles Photo Rag. The max I get with QTR is 1.64 with 
> > boost_K:100 and grey_overlap: 10. I measure the 100% point at the 21-random-
stepwedge. 
> > My questions: 1. what can I do more to get a higher d-max? 2. for printing the 21-
random-
> > stepwedge is it neccessary to convert the stepwedge in the new QTR-gray 
workingspace and 
> > print with color-management incl. the QTR grey matt printer profile or do I have to 
print 
> > withour any color-management at this step? Thanks a lot for your help!!
> 
> Could it be the pigment load of your own black ink ?  Is a 
> higher load possible or did you already pick the 85% patch and 
> more pigment doesn't deliver more density ?
> 
> Ernst
> 
>                     --
>            Ernst Dinkla
> 
> 
> www.pigment-print.com
> (         unvollendet         )
>
Sorry, but what do you mean with pigment-load?

Hi Dieter.
I think Ernst is asking you if you have tried making the Black K ink
limit higher in the first QTR calibration step. Move it up some and
see if you get higher density or lower. If higher you are OK. If no
change or lower you probably are flooding the paper and reducing d'max
and will need to correct for that by reducing the K limit. That is
assuming that your K ink has enough pigment in it to get to your d'max
target.

Regards
Duane



--- In QuadtoneRIP@yahoogroups.com, "dieterneubert56"
<dieter.neubert@...> wrote:
>
> --- In QuadtoneRIP@yahoogroups.com, Ernst Dinkla <E.Dinkla@> wrote:
> >
> > dieterneubert56 wrote:
> > > Hi all together! I have made a nice linearisation with my
densitometer and my Eye-
> One using 
> > > our own 7-Step-B+W-Ink-Set called "Carboprint-Ink" for Epson
2200 (in Germany: 
> Epson 
> > > 2100) and the QTR for MAC Tiger. The only problem: I cannot get
the highest possible 
> d-max 
> > > (thats around 1.76) on Hahnemühles Photo Rag. The max I get with
QTR is 1.64 with 
> > > boost_K:100 and grey_overlap: 10. I measure the 100% point at
the 21-random-
> stepwedge. 
> > > My questions: 1. what can I do more to get a higher d-max? 2.
for printing the 21-
> random-
> > > stepwedge is it neccessary to convert the stepwedge in the new
QTR-gray 
> workingspace and 
> > > print with color-management incl. the QTR grey matt printer
profile or do I have to 
> print 
> > > withour any color-management at this step? Thanks a lot for your
help!!

> > 
> > Could it be the pigment load of your own black ink ?  Is a 
> > higher load possible or did you already pick the 85% patch and 
> > more pigment doesn't deliver more density ?
> > 
> > Ernst
> > 
> >                     --
> >            Ernst Dinkla
> > 
> > 
> > www.pigment-print.com
> > (         unvollendet         )
> >
> Sorry, but what do you mean with pigment-load?
>