QTR-Quadtone RIP

I use a Mac OS 10.4  with Epson 9600 and I've an Eye One.I've dowloaded 
for to try Quad Tone Rip.I'd like to make the linearization and the 
profiles by my self (I use piezography ink NK7). Do you know how I 
could to do it?

Thanks

roberto

I posted this as a reply to another of my posts, but wasn't specific in pointing out it was a Linearization question, so here is a better description of the query.

I am attempting to create a QTR curve for Epson Premium Semi Gloss paper.

Windows 7
QTR Ver. 2.7
Epson 1290
UT2 inks
Epson Premium Semi Gloss paper

I am using EPremLuster-neutral-3.qidf as a template.

Workflow

1.  Opened EPremLuster-neutral-3.qidf in Curve Creation.
2.  Cleared Linearization.
3.  Saved As EPremSemiGls-neutral-3.qidf.
4.  Printed off 21step.tif in Graphical Interface on Semi Gloss paper.
5.  After drying, read the patches.
6.  Entered the results into Linearization of Curve Creator.
7.  Tom Moore's Tutorial then says use the Create Curve button to
    create the Linearized version of your curve - there isn't a Create
    Curve button, just a Show Curve.
8.  In spite of this I Saved the results and expected to see a change
    in the Linearization readings in Curve Creator - there was no such
    change.
9.  I printed 21step.tif with the Linearized readings saved.
10. I re measured the patches and they were different to the non
    linearized 21step.tif as shown below:-

   None Linearized    Linearized

100   2.09               2.10
95    1.97               1.90
90    1.83               1.73
85    1.68               1.55
80    1.54               1.40
75    1.40               1.27
70    1.24               1.15
65    1.09               1.05
60    0.96               0.94
55    0.86               0.84
50    0.75               0.76
45    0.67               0.67
40    0.60               0.59
35    0.54               0.52
30    0.48               0.45
25    0.42               0.38
20    0.35               0.32
15    0.29               0.26
10    0.23               0.20
5     0.16               0.14
0     0.09               0.09

Are these results what I should expect and is the Curve Creator working properly, as this version of QTR is not working as Tom's Tutorial describes.

Mel

Mel,

The results you expect are a straight line (or close to) for L* from paper
white to dmax for the linearized target.
If you are getting that then you are sorted, if you are not then there is
something wrong with your steps.

Mike

On 31 July 2011 10:28, Mel <chilterns@...> wrote:

> **
>
>
> I posted this as a reply to another of my posts, but wasn't specific in
> pointing out it was a Linearization question, so here is a better
> description of the query.
>
> I am attempting to create a QTR curve for Epson Premium Semi Gloss paper.
>
> Windows 7
> QTR Ver. 2.7
> Epson 1290
> UT2 inks
> Epson Premium Semi Gloss paper
>
> I am using EPremLuster-neutral-3.qidf as a template.
>
> Workflow
>
> 1. Opened EPremLuster-neutral-3.qidf in Curve Creation.
> 2. Cleared Linearization.
> 3. Saved As EPremSemiGls-neutral-3.qidf.
> 4. Printed off 21step.tif in Graphical Interface on Semi Gloss paper.
> 5. After drying, read the patches.
> 6. Entered the results into Linearization of Curve Creator.
> 7. Tom Moore's Tutorial then says use the Create Curve button to
> create the Linearized version of your curve - there isn't a Create
> Curve button, just a Show Curve.
> 8. In spite of this I Saved the results and expected to see a change
> in the Linearization readings in Curve Creator - there was no such
> change.
> 9. I printed 21step.tif with the Linearized readings saved.
> 10. I re measured the patches and they were different to the non
> linearized 21step.tif as shown below:-
>
> None Linearized Linearized
>
> 100 2.09 2.10
> 95 1.97 1.90
> 90 1.83 1.73
> 85 1.68 1.55
> 80 1.54 1.40
> 75 1.40 1.27
> 70 1.24 1.15
> 65 1.09 1.05
> 60 0.96 0.94
> 55 0.86 0.84
> 50 0.75 0.76
> 45 0.67 0.67
> 40 0.60 0.59
> 35 0.54 0.52
> 30 0.48 0.45
> 25 0.42 0.38
> 20 0.35 0.32
> 15 0.29 0.26
> 10 0.23 0.20
> 5 0.16 0.14
> 0 0.09 0.09
>
> Are these results what I should expect and is the Curve Creator working
> properly, as this version of QTR is not working as Tom's Tutorial describes.
>
> Mel
>
>
>  
>


[Non-text portions of this message have been removed]

Thanks Mike, the curve is virtually the same as the one for the "stock" EPremLuster-neutral-3.qidf, so It looks like it's OK.

If I add 0.09D (the Dmin of the Reflection Standard plaque for my X-Rite 810) to my results this brings me pretty close to the ideal densities between dMax 2.19 and 2.2 in Tom's Tutorial.

Does it look as though the Curve Creator is working OK as it is not the same as Tom' tutorial ?


--- In QuadtoneRIP@yahoogroups.com, Michael King <drmrking@...> wrote:

>
> Mel,
> 
> The results you expect are a straight line (or close to) for L* from paper
> white to dmax for the linearized target.
> If you are getting that then you are sorted, if you are not then there is
> something wrong with your steps.
> 
> Mike
> 
> On 31 July 2011 10:28, Mel <chilterns@...> wrote:
> 
> > **
> >
> >
> > I posted this as a reply to another of my posts, but wasn't specific in
> > pointing out it was a Linearization question, so here is a better
> > description of the query.
> >
> > I am attempting to create a QTR curve for Epson Premium Semi Gloss paper.
> >
> > Windows 7
> > QTR Ver. 2.7
> > Epson 1290
> > UT2 inks
> > Epson Premium Semi Gloss paper
> >
> > I am using EPremLuster-neutral-3.qidf as a template.
> >
> > Workflow
> >
> > 1. Opened EPremLuster-neutral-3.qidf in Curve Creation.
> > 2. Cleared Linearization.
> > 3. Saved As EPremSemiGls-neutral-3.qidf.
> > 4. Printed off 21step.tif in Graphical Interface on Semi Gloss paper.
> > 5. After drying, read the patches.
> > 6. Entered the results into Linearization of Curve Creator.
> > 7. Tom Moore's Tutorial then says use the Create Curve button to
> > create the Linearized version of your curve - there isn't a Create
> > Curve button, just a Show Curve.
> > 8. In spite of this I Saved the results and expected to see a change
> > in the Linearization readings in Curve Creator - there was no such
> > change.
> > 9. I printed 21step.tif with the Linearized readings saved.
> > 10. I re measured the patches and they were different to the non
> > linearized 21step.tif as shown below:-
> >
> > None Linearized Linearized
> >
> > 100 2.09 2.10
> > 95 1.97 1.90
> > 90 1.83 1.73
> > 85 1.68 1.55
> > 80 1.54 1.40
> > 75 1.40 1.27
> > 70 1.24 1.15
> > 65 1.09 1.05
> > 60 0.96 0.94
> > 55 0.86 0.84
> > 50 0.75 0.76
> > 45 0.67 0.67
> > 40 0.60 0.59
> > 35 0.54 0.52
> > 30 0.48 0.45
> > 25 0.42 0.38
> > 20 0.35 0.32
> > 15 0.29 0.26
> > 10 0.23 0.20
> > 5 0.16 0.14
> > 0 0.09 0.09
> >
> > Are these results what I should expect and is the Curve Creator working
> > properly, as this version of QTR is not working as Tom's Tutorial describes.
> >
> > Mel
> >
> >
> >  
> >
> 
> 
> [Non-text portions of this message have been removed]
>