QTR-Quadtone RIP

Colin,

>> I'd recommend you try the existing profile with just the 
>> ink positions changed and see if it works for you.

> That is what I did last of all and the L values 
> I put in my email was from that curve. 

...
> I am using Win XP and it is easy to make the curve smoother 
> at the right hand end. 

>I just need to know how to get the curve linear.


OK, so you have my HPR profile with the ink positions altered to match your
printer setup.  To re-linearize the profile for your system, clear the
values in the Linearization tab and save it with a name that does not
overwrite a previous file. (I leave the sliders in the various tabs in their
default positions.) Then print a 21-step test file with the new profile that
has no linearization data in it.  Read the test print and insert the L
values into the Linearization table.

I didn't graph the L values in your previous post, but at least they seem to
be in order.  I'm not sure why you'd be getting such a low dmax.  Optimizing
the dmax with that profile I call Dmax-test is the first thing I do when
profiling a paper with the 3MK setup.  With HPR you should be seeing L
values for the dmax in the 14 to 15 range.

I hope this helps.  If I've misunderstood the issue, let me know.

Paul
www.PaulRoark.com