Digital BW, The Print

dwight_talley <dwight_talley@...> wrote:

> **
>
>
> ... Epson 7600 ... UT7 black ink.
>
Start by reading http://www.paulroark.com/BW-Info/UT-2200-Readme.htm

I have not used that inkset for some time, so I'm not sure I can add much
to what I wrote some years ago.




> ... the photo black prints I make with my color 7600 seems to have blacker
> blacks ...
>
UT7 uses it's dark gray inks in the C and M positions to generate a glossy
black.  With the Epson driver, a normal PK will produce a slightly blacker
black.  Also, Epson's PK will produce a blacker black than the MIS inks.
 With QTR the dark gray inks will match MIS PK.  The Epson PK may still
have an advantage.


> The paper I use for B&W is matte.
>
Eboni MK can produce a very good black on matte paper.  If you  are not
getting a good dmax on matte paper there is something wrong.

If the printer has been sitting  for a long time, I'd pull the carts and
agitate them, then do a power  cleaning to  refresh the inks in the tubes.


> So here are my questions:
>
> 1. What paper should I be using with the UT7 ink on this printer?
>
It can print on either matte or glossy with the right profiles, but  I
think it's better with matte paper.


> 2. How do you setup Quadtone RIP to work with this printer and 7 inks? I
> did a quick look and was lost. I am to understand that this program is what
> everyone uses.
>
For matte, you can set up 3 profiles: cyan/warm carbon channel (LC, C, and
MK), cool magenta channel (LM, M, and MK), and  neutral LK channel (LK,
MK).  Don't use Y (sepia).  Then use the sliders to use the three channels
as needed.

Use standard QTR profiling for setting up the channels.  See
http://www.paulroark.com/BW-Info/QTR-Flatbed.pdf for a simplified approach
to QTR.


> 3. Am I expecting too much for the 7 ink system to look as good as Photo
> black?
>

There is usually a trade off between flexibility and smoothness.  UT7 was
made to be flexible.

 Frankly, I prefer other  approaches.  For matte paper, using Eboni-6 as
the starting point is what I do now.  You can see my preferences at
http://www.paulroark.com/BW-Info/

Paul
www.PaulRoark.com


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