Digital BW, The Print

Are you using the show curve function when you create the curve?  If you do
this, you get an admittedly crude representation of all of the ink curves.
Why not try reducing the partition values, look at the resultant curves, and
see if you think it will help.  The final test, of course, will be the step
wedge, and whether the steps are even.


Bill Morse
PhotoProspect
Cambridge, MA USA


on 8/7/03 6:55 PM, Daniel Staver wrote:

> Carl,
> 
> I was using 1440x1440 Highest Quality. I tried printing the calibration
> chart again with 1440x720 HQ, but same result... The only other thing I
> can imagine is that there is still some sort of unwanted profiling with
> the postscript driver I'm using in Windows to print to the Linux
> machine. I make sure to use 'Don't color manage this document' when I
> open the chart in Photoshop, and print using 'Same as source'.
> 
> I would try to print directly from linux to compare, but for some reason
> that doesn't work. I just get 'No pages found'.
> 
> Actually the prints look very good when I use GRAY_OVERLAP=60, the only
> issue I have with that is some slight dotting from the LC in the
> highlights. If I could just move the endpoint of the LC curve a bit
> inwards everything would be perfect.
> 
> --
> Daniel Staver
> http://daniel.staver.no
> 
>> Daniel,
>> 
>> I'm still wondering about your high partition values.
>> Looking at your 
>> scan with ink limit=70 it appears that LK would have a
>> partition value 
>> of about 55% relative to K, if LK were used as the only other
>> gray ink. 
>>   When I did my 2200 EEM profiles with the UC inks my default
>> ink limit 
>> was 75 and the LK partition value was 35%.  I don't know if
>> the UT K vs 
>> UC K is the reason for the difference or something else.  Are
>> you also 
>> using the 1440x720 Highest Quality resolution setting for
>> printing?  I 
>> know that these profiles are resolution dependent and quite different
>> results would be obtained with other driver settings.
> 
> 
> 
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