QTR-Quadtone RIP

I'd hoped to hear by now from some of the experienced folks on here. For various reasons 
I'm not able to develop my own curves at this point, so was wondering where there is a 
collection of QTR curves for specific papers, notably the Red River natural, the Lexjet version 
of enhanced matte, and various Hanemuele art papers.

I'm also wondering why there is no "neutral" curve for the Epson papers included with the 
QTR download.  

Finally, I'd like to understand the differences between the Epson UC2 photo black and matte 
black inks.  I am running an Epson 4000.

I'll post this and hope again for input.  Thanks.

eric hatch

> -----Original Message-----
> From: QuadtoneRIP@yahoogroups.com [mailto:QuadtoneRIP@yahoogroups.com] On
> Behalf Of erichocinc

...

> I'm not able to develop my own curves at this point, so was wondering
> where there is a
> collection of QTR curves for specific papers, notably the Red River
> natural, the Lexjet version
> of enhanced matte, and various Hanemuele art papers.
> 

Since you're asking about UC black inks, I presume that curves you are
looking for are for UC ink as well.

The largest repository of curves comes with QuadtoneRIP when you download
it. Next there are curves in the files section of the Yahoo Groups pages for
QuadtoneRIP. Finally a number of users, notably Carl Schofield and Paul
Roark, have web pages that may have some additional curves. Although I don't
recall seeing curves for Red River natural, there may be an existing curve
for another paper that is sufficiently close as to suit your needs.

It seems to me that compared to other printers, the 4000 has quite a good
selection of curves, including a set for Hann. Photo Rag.

> I'm also wondering why there is no "neutral" curve for the Epson papers
> included with the
> QTR download.

Usually, where there is no neutral curve, the equivalent is achieved by
blending the warm and cool curves. The ratio required to achieve a hue you
consider neutral will depend on the paper you're using and your judgment of
what you consider neutral.

> 
> Finally, I'd like to understand the differences between the Epson UC2
> photo black and matte
> black inks.  I am running an Epson 4000.

Aside from the obvious usage difference (Matte ink on matte paper, etc.) I
can't answer this.


Tom Moore

The difference between photo black and matte black is that matte black is
laid down on matte paper as larger droplets because of the much greater
absorbency of the matte papers. When used on a glossy paper these droplets
become blobs and spoil the darks. Photo black is "stickier" and is laid down
as the correct size droplets on glossy paper.

From: QuadtoneRIP@yahoogroups.com [mailto:QuadtoneRIP@yahoogroups.com] On
Behalf Of Tom Moore
Sent: Friday, January 25, 2008 1:25 PM
To: QuadtoneRIP@yahoogroups.com
Subject: RE: [QuadtoneRIP] Second request for help

 



> -----Original Message-----
> From: QuadtoneRIP@yahoogroups.com <mailto:QuadtoneRIP%40yahoogroups.com>
[mailto:QuadtoneRIP@yahoogroups.com <mailto:QuadtoneRIP%40yahoogroups.com> ]
On
> Behalf Of erichocinc

...

> I'm not able to develop my own curves at this point, so was wondering
> where there is a
> collection of QTR curves for specific papers, notably the Red River
> natural, the Lexjet version
> of enhanced matte, and various Hanemuele art papers.
> 

Since you're asking about UC black inks, I presume that curves you are
looking for are for UC ink as well.

The largest repository of curves comes with QuadtoneRIP when you download
it. Next there are curves in the files section of the Yahoo Groups pages for
QuadtoneRIP. Finally a number of users, notably Carl Schofield and Paul
Roark, have web pages that may have some additional curves. Although I don't
recall seeing curves for Red River natural, there may be an existing curve
for another paper that is sufficiently close as to suit your needs.

It seems to me that compared to other printers, the 4000 has quite a good
selection of curves, including a set for Hann. Photo Rag.

> I'm also wondering why there is no "neutral" curve for the Epson papers
> included with the
> QTR download.

Usually, where there is no neutral curve, the equivalent is achieved by
blending the warm and cool curves. The ratio required to achieve a hue you
consider neutral will depend on the paper you're using and your judgment of
what you consider neutral.

> 
> Finally, I'd like to understand the differences between the Epson UC2
> photo black and matte
> black inks. I am running an Epson 4000.

Aside from the obvious usage difference (Matte ink on matte paper, etc.) I
can't answer this.

Tom Moore

 



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

Thank you, Brian.  That is very helpful info.
On Jan 25, 2008, at 2:04 PM, Brian Corll wrote:

> The difference between photo black and matte black is that matte  
> black is
> laid down on matte paper as larger droplets because of the much  
> greater
> absorbency of the matte papers. When used on a glossy paper these  
> droplets
> become blobs and spoil the darks. Photo black is "stickier" and is  
> laid down
> as the correct size droplets on glossy paper.
>
> From: QuadtoneRIP@yahoogroups.com  
> [mailto:QuadtoneRIP@yahoogroups.com] On
> Behalf Of Tom Moore
> Sent: Friday, January 25, 2008 1:25 PM
> To: QuadtoneRIP@yahoogroups.com
> Subject: RE: [QuadtoneRIP] Second request for help
>
> > -----Original Message-----
> > From: QuadtoneRIP@yahoogroups.com <mailto:QuadtoneRIP%40yahoogroups.com 
> >
> [mailto:QuadtoneRIP@yahoogroups.com <mailto:QuadtoneRIP%40yahoogroups.com 
> > ]
> On
> > Behalf Of erichocinc
>
> ...
>
> > I'm not able to develop my own curves at this point, so was  
> wondering
> > where there is a
> > collection of QTR curves for specific papers, notably the Red River
> > natural, the Lexjet version
> > of enhanced matte, and various Hanemuele art papers.
> >
>
> Since you're asking about UC black inks, I presume that curves you are
> looking for are for UC ink as well.
>
> The largest repository of curves comes with QuadtoneRIP when you  
> download
> it. Next there are curves in the files section of the Yahoo Groups  
> pages for
> QuadtoneRIP. Finally a number of users, notably Carl Schofield and  
> Paul
> Roark, have web pages that may have some additional curves. Although  
> I don't
> recall seeing curves for Red River natural, there may be an existing  
> curve
> for another paper that is sufficiently close as to suit your needs.
>
> It seems to me that compared to other printers, the 4000 has quite a  
> good
> selection of curves, including a set for Hann. Photo Rag.
>
> > I'm also wondering why there is no "neutral" curve for the Epson  
> papers
> > included with the
> > QTR download.
>
> Usually, where there is no neutral curve, the equivalent is achieved  
> by
> blending the warm and cool curves. The ratio required to achieve a  
> hue you
> consider neutral will depend on the paper you're using and your  
> judgment of
> what you consider neutral.
>
> >
> > Finally, I'd like to understand the differences between the Epson  
> UC2
> > photo black and matte
> > black inks. I am running an Epson 4000.
>
> Aside from the obvious usage difference (Matte ink on matte paper,  
> etc.) I
> can't answer this.
>
> Tom Moore
>
> [Non-text portions of this message have been removed]
>
>
> 



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

Thanks, Tom.  That helps.  Is there a difference between a standard  
ICC profile and one specifically for use by QTR? (I'm guessing that  
there is).


On Jan 25, 2008, at 1:25 PM, Tom Moore wrote:

>
>
> > -----Original Message-----
> > From: QuadtoneRIP@yahoogroups.com [mailto:QuadtoneRIP@yahoogroups.com 
> ] On
> > Behalf Of erichocinc
>
> ...
>
> > I'm not able to develop my own curves at this point, so was  
> wondering
> > where there is a
> > collection of QTR curves for specific papers, notably the Red River
> > natural, the Lexjet version
> > of enhanced matte, and various Hanemuele art papers.
> >
>
> Since you're asking about UC black inks, I presume that curves you are
> looking for are for UC ink as well.
>
> The largest repository of curves comes with QuadtoneRIP when you  
> download
> it. Next there are curves in the files section of the Yahoo Groups  
> pages for
> QuadtoneRIP. Finally a number of users, notably Carl Schofield and  
> Paul
> Roark, have web pages that may have some additional curves. Although  
> I don't
> recall seeing curves for Red River natural, there may be an existing  
> curve
> for another paper that is sufficiently close as to suit your needs.
>
> It seems to me that compared to other printers, the 4000 has quite a  
> good
> selection of curves, including a set for Hann. Photo Rag.
>
> > I'm also wondering why there is no "neutral" curve for the Epson  
> papers
> > included with the
> > QTR download.
>
> Usually, where there is no neutral curve, the equivalent is achieved  
> by
> blending the warm and cool curves. The ratio required to achieve a  
> hue you
> consider neutral will depend on the paper you're using and your  
> judgment of
> what you consider neutral.
>
> >
> > Finally, I'd like to understand the differences between the Epson  
> UC2
> > photo black and matte
> > black inks. I am running an Epson 4000.
>
> Aside from the obvious usage difference (Matte ink on matte paper,  
> etc.) I
> can't answer this.
>
> Tom Moore
>
>
> 



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

> -----Original Message-----
> From: QuadtoneRIP@yahoogroups.com [mailto:QuadtoneRIP@yahoogroups.com] On
> Behalf Of Eric Niceguy

...

> 
> Thanks, Tom.  That helps.  Is there a difference between a standard
> ICC profile and one specifically for use by QTR? (I'm guessing that
> there is).
> 

Yes there is. The profiles used by QTR to describe a particular
printer/ink/paper combination are called "curves" and are different from ICC
profiles - although they serve a similar purpose, but for b&w printing only.

Tom Moore