QTR-Quadtone RIP

Tom,

Thank you for the tip. I have tried to reduce the ink limit (-20) for
2880 dpi and ended up with a decent result. It could be just the image
I kept printing for all my testes. 
Regarding the L going up. It seems that excessive amount of inks
creates a glossy look that my spectrometer detects as a higher L
value. I don't use a densitometer. 

I'll search for 2880 profile. I did all my testes using Epson enhanced
matte paper.

Igor.

--- In QuadtoneRIP@yahoogroups.com, "Tom Moore" <r.t.moore@r...> wrote:
> Igor
> 
> Clearly one can create 2880 dpi curves for the 2200 because there
are some
> included in the latest distribution for PC (under the Quad2200-NK7
printing
> model). However, when I checked, although the curves were there (.quad
> files) the original "source code" for the curves were not (the .qidf
files).
> I suspect the 2880 curves were created by Inkjet Mall, who did not
want to
> aid competitors by releasing the .qidf files. Unfortunate, because
looking
> at other's .qidf files is an excellent way of understanding how
curves work.
> You could ask on this list or on the BW printing list if any has
2880 curves
> for the ink/paper you intend to use.
> 
> Unfortunately I haven't made one, although I've made a number of 1440
> curves.
> 
> I'm not clear what the problem was that you encountered - you said that
> after 70% black the L value went up (i.e. density decreased).
Perhaps 70% is
> a reasonable overall ink limit at 2880 dpi.
> 
> You can use curves designed for 1440 at 2880 dpi by reducing the
shadows by
> about -45% in QTR when you print. I haven't checked the linearity of
this
> approach, though.
> 
> HTH
> 
> Tom Moore
> 
> 
> > -----Original Message-----
> > From: QuadtoneRIP@yahoogroups.com
[mailto:QuadtoneRIP@yahoogroups.com] On
> > Behalf Of isvibilsky
> > Sent: Monday, October 03, 2005 12:15 PM
> > To: QuadtoneRIP@yahoogroups.com
> > Subject: [QuadtoneRIP] What is the proper way to use 2880 dpi?
> > 
> > Hi,
> > 
> > I found that my 2200 printer lays out too much black when I use 2880
> > dpi resolution. Not sure this is only my printer or it is known fact.
> > When I printed the ink separation page I was surprised to see the
> > measured with eye-one values. After 70% black the L value started to
> > go up. I was not able to build a curve and linearize it in that mode.
> > However, everything works ok when I use 1440 dpi. Is there a way to
> > use 2880 dpi?
> > 
> > Thank you.
> > Igor
> > www.photographyforever.com