QTR-Quadtone RIP

morning Howard,
yesterday night i made same tests and you are right. 
I added an overlap and it was much better but there is an overinking
problem. The magenta ink arrives to his darker grey after starting to
overload the paper.
have i to use magenta in a range where it doesn't overink ?
I use MIS ink with ebony black with an Epson R265 (european version
for the r260) and Epson Archive Matte paper.

thanks
Paolo

--- In QuadtoneRIP@...m, Howard Shaw <glassman@...> wrote:
>
> Paolo
> 
> What inks are you using here? The ink limits vary widely and this is
not 
> like any partition I have seen before. If I was to guess at the
cause of 
> the problem I would say that, upto the 98% spot, the magenta position 
> ink in combination with the black ink is overinking the paper reducing 
> dmax. Because you have no overlap the black is on its own at the 100% 
> step and you're dmax is therefore restored (with an overlap the magenta 
> would still fire at the 100% point). You could test this by adding an 
> overlap of say 8. If I am right this will reduce the reading at 100% 
> more in line with that at 98%. However this test is only confirming the 
> problem - overinking - which still needs to be resolved.
> 
> (I've also not seen the use of commas as decimal places in qidf files 
> before but I guess you would be having greater problems if these were 
> not allowed).
> 
> regards
> Howard
> 
> 
> paolovertullo wrote:
> > here it's my .qidf :
> > 
> > PRINTER=QuadR260-MIS
> > CURVE_NAME=MK-EPSON-ARCHIVAL-MATTE-6ink-140408
> > GRAPH_CURVE=YES
> > N_OF_INKS=6
> > DEFAULT_INK_LIMIT=
> > BOOST_K=
> > LIMIT_K=30
> > LIMIT_C=25
> > LIMIT_M=75
> > LIMIT_Y=5
> > LIMIT_LC=12
> > LIMIT_LM=25
> > N_OF_GRAY_PARTS=6
> > GRAY_INK_1=K
> > GRAY_VAL_1=100
> > GRAY_INK_2=M
> > GRAY_VAL_2=38,33
> > GRAY_INK_3=C
> > GRAY_VAL_3=29
> > GRAY_INK_4=LM
> > GRAY_VAL_4=16,66
> > GRAY_INK_5=LC
> > GRAY_VAL_5=11
> > GRAY_INK_6=Y
> > GRAY_VAL_6=5,66
> > GRAY_HIGHLIGHT=10
> > GRAY_SHADOW=10
> > GRAY_OVERLAP=
> > GRAY_GAMMA=1
> > GRAY_CURVE=
> > N_OF_TONER_PARTS=0
> > TONER_HIGHLIGHT=10
> > TONER_SHADOW=10
> > TONER_GAMMA=1
> > TONER_CURVE=
> > N_OF_TONER_2_PARTS=0
> > TONER_2_HIGHLIGHT=10
> > TONER_2_SHADOW=10
> > TONER_2_GAMMA=1
> > TONER_2_CURVE=
> > N_OF_UNUSED=0
> > 
> > thanks for the help Howard
> > 
> > Paolo
> > 
> > 
> > --- In QuadtoneRIP@yahoogroups.com, Howard Shaw <glassman@> wrote:
> >>
> >> paolovertullo wrote:
> >>  > i didn't specifyed any black boost value.
> >>  > is it supposed to be valorized ? in this case what is a good
starting
> >>  > point ?
> >>  >
> >> Paolo
> >> 
> >> It can't be black boost causing it then. Another variable that might 
> >> affect this is overlap. Perhaps it would be helpful if you could
paste 
> >> your whole .qidf into a message.
> >> 
> >> By the way, I'm assuming that the 100% patch is a lot darker than
the 
> >> 99% patch.
> >> 
> >> regards
> >> Howard
> >>
> > 
> > 
> > 
> > ------------------------------------
> > 
> > Yahoo! Groups Links
> > 
> > 
> > 
> >
>