Digital BW, The Print

Andre,

>Just printed the 21 step file and it seems that from 65 to 80,it all 
>looks pretty much the same.So I guess this is the problem. Can you 
>give me some hints on how to modify the curve? ...

Have you checked that the inks are in the right places?  For example, in a
purge 4 print, the C should be by far the darkest of the grays, but not as
dark as the K.  The Y is the lightest, and M is also quite light.  If you
are using the Mild partitioning curve, what you describe is almost as if the
Y or M are too dark.  Their curves do go relatively flat in the area you're
describing.

Assuming the inks are in the right places, the red curve, controlling the
dark gray ink, gives you the most control.  You can probably adjust the
points in that area and solve the problem.

The test strips on my web page have labels that might be useful in relating
the various numbers that will appear on the test strips and curves boxes.
See the index at http://home1.gte.net/res09aij/index.htm.

Hope this helps.

Paul
www.PaulRoark.com 





> 
> --- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Paul Roark" 
> <paul.roark@v...> wrote:
> > I'd use a 21-step file to isolate the problem area and fix it on 
> the curve.
> > The FS inks in the 1160, however, should print with very little 
> modification
> > to the default curve.  That is, try printing the grayscale file 
> with no
> > curve.  The image should be a bit light but have a good ramp.  
If 
> you still
> > see posterization, it may be an indication that something is 
> wrong. 
> > 
> > Paul
> > www.PaulRoark.com 
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