QTR-Quadtone RIP

Hi everybody,
i'm trying to print with my Epson R265 (european R260 version) and my
new Black and White Refill kit for Epson R260 of RCN Ink with Eboni
Black. It was supposed to be a Neutral black for matte paper.
I did many test with different curves like MK-Epson-Matte-HW-BO,
MK-Moab-Entrada-Nat190-BO, MK-PremierArt-MatteBW-BO and Epson Archival
Matte Paper (192 g/m2).
The result is a print warm near a sepia tone. 
My question is : what's wrong? what can i do to print a cool neutral
black ? What curve am i suppose to use ?

I use Quadtone RIP with my Mac Leopard and print with photoshop CS3.

I hope i exposed my problem clearly.

Thanks in advance.

Paolo

Hi Paolo,

>i'm trying to print with my Epson R265 (european R260 version) 
>and my new Black and White Refill kit for Epson R260 of 
> RCN Ink with Eboni Black. 

>It was supposed to be a Neutral black for matte paper.
>I did many test with different curves like 
> MK-Epson-Matte-HW-BO, MK-Moab-Entrada-Nat190-BO, 
> MK-PremierArt-MatteBW-BO and Epson Archival
> Matte Paper (192 g/m2).
> The result is a print warm near a sepia tone.

When Eboni matte black is printed in Black Only mode on the 265 it'll print
with the same tones as those achieved with the R1800.  See
http://www.paulroark.com/BW-Info/R1800.htm generally.  See
http://www.paulroark.com/BW-Info/R1800-No-OBA-Paper.pdf for tones you'll get
with papers that have no OBAs (that is, un-brightened paper with no optical
brightening agents) and
http://www.paulroark.com/BW-Info/R1800-OBA-Papers.pdf for papers with OBAs.

It is normal for Eboni carbon to have a slight rise is warmth in the
midtones, but a paper like the Moab Entrada Natural should look rather
neutral, with just noticeable warmth in the shadows.

On the other hand, most bright papers will look quite warm because compared
to the bright paper base, the shadows are much warmer.  The eye, in effect,
does a "white balance" on the paper white.  Thus there is an apparent
paradox that cool papers often look warmer with the same carbon ink.

If you want cooler prints, you need to use the cool midtone inks that MIS
sells for the 260.  That workflow is described here:
http://www.paulroark.com/BW-Info/R260-BW-GS-Eps.pdf  It uses the Epson
driver, preferably with ICCs made with Create ICC.  Full QTR could also be
used, of course, but I have not made profiles.

Note that there could also be other problems causing your warm tones.  If
the ink is Photo black as opposed to Eboni, the image would be very warm.
If the Eboni was re-filled into an Epson OEM cartridge, I'm not sure what
reactions might occur.  I noticed also that there was an error on the MIS
web page.  The bulk RC Cool C-position ink clicks over to what appears to be
Eboni.  Be sure you have the right inks.

Good luck with the system.  It's capable of very good prints.

Paul
www.PaulRoark.com