Digital BW, The Print

Hi Peter,

Gimp-print for the 7600/9600 hasn't been tuned for these printers yet.
There are too many 2880dpi options and they are not working correctly.
However with matte paper and matte ink, I don't think the 2880 res should
be used.

I believe that 1440x720 should be the optimal resolution.  Although it
works, you are right that the dots are too big.  I've been working on that
issue and I think I've found the problem.  Once I'm sure all the dots sizes
are being used I can tune the relative sizes.  I don't think this should be
very far away.

I'm not sure what dithering issues you are seeing but it may be because of
the large dots.  Also I've found I like the "ordered" dithering a little better.

Roy

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Peter Baumbach" 
<info@p...> wrote:
> I am using an Imac G3 and an Epson 7600 with UC Matte black inks on 
> Epson Enhanced Matte paper. I have a few questions regarding the 
> QuadToneRIP 2.0 beta 8. 
> 
> - When I try to print the ink pattern page in calibration mode with a 
> resolution of 2880 x 1440 dpi the second half of the page seems to be 
> printed over the first half. Is this resolution not supported 
> although it appears in the list?
> 
> - With a resolution of 1440 x 720 dpi I am able to do all the ink 
> limitation and partitioning and the "linearization". But those 
> patches of the step wedge where the light black and the black ink 
> both contribute to the density have a strange looking dither pattern. 
> What is the reason for this ?
> 
> - The highlights are very coarse, even when viewed with the naked 
> eye. The "dots" are much coarser compared to the output with my 
> StudioPrint demo version using the same inks. What could be wrong ?
> 
> Many thanks in advance,
> Peter
> 
> peter baumbach - fine art photography
> http://www.pb-photo.com