QTR-Quadtone RIP

Ferdinand

When you use Load Curve you are pretty much on your own - you can use 
limits but the shape of the loaded curve will also determine the limit. 
With the example curves (.acv's) the limit would be set to 100. None of 
the gray curve or toner curves facilities are needed as you can make all 
those adjustments with the shape of the loaded curve.

However, using that method can produce bad results unless you are you 
prepared to undertake a lot of testing.

Roy's suggestion of taking a preexisting curve for a similar paper (in 
particular find one with similar ink limit characteristics) and applying 
an icc profile to it is a very good one which will likely save you a lot 
of time.

regards
Howard

ferdinand_paris wrote:
> Thanks Howard
> 
> The more I know, it seems the more I don't know.
> 
> What I actually meant was: can you see a significant difference in prints?
> 
> However my question now is:  how do you use such curves?  It wasn't
> clear from your URL.  Is there a guide somewhere?  I can work it out
> up to a point.  I can see where to load the curves into the Curve
> Creator.  
> 
> I guess the question is:  where to go from there?  Is it much the same
> as normal - i.e. setting the overall limit, partitioning the inks,
> checking if black boost is needed, linearising and creating a profile?
>  Should I be setting ink specific limits?  What about "Grey Curve",
> "Toner Curve 1", "Toner Curve 2"?  Are there safe values that I could
> use here?
> 
> Thanks for sharing this with me.  Any further tips would be appreciated.
> 
> Ferdinand
>