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QTR-Quadtone RIP

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R800 custom curves / profiles

R800 custom curves / profiles

2007-06-26 by beardie_dragon

Hi,

I have understood and made profiles for my 2100 and am now moving on 
to the R800 but lack an understanding of how to progress.

I started by measuring the max % ink with the first test chart, at 
about 60%.

But as there is no LK ink I am not sure what to do with the % of Ink 
1 (Black) that equates to 100 % of Ink 7 - Light black. I measured 
that 38% of Black equates to 100% of Light Black

Can somebody explain how I create the qdif file prior to the 
linearize measurements.

In orther words what do i do with the 60% and 38% figures in the 
first stab qdif file.

When I have done this I will then do the linearization.

thanks

RE : [QuadtoneRIP] R800 custom curves / profiles

2007-07-06 by Jean Claude Parent

hello,
  as nobody answer to this and as I had to make profiles for my R1800 I could only give here what I did...
  so the light black doesn't exist on the R800/1800 but we do have Photo Black...
  And if you check the 21 step for this PK you'll see it's a little lighter than MattBk
  you just have to complete your curves with the Ohoto black as explain for the LBk in the booklet ...
  results are quite good... at least for me...
  be happy
  jean claude

beardie_dragon <beardie_the_dragon@...> a écrit :
          Hi,

I have understood and made profiles for my 2100 and am now moving on 
to the R800 but lack an understanding of how to progress.

I started by measuring the max % ink with the first test chart, at 
about 60%.

But as there is no LK ink I am not sure what to do with the % of Ink 
1 (Black) that equates to 100 % of Ink 7 - Light black. I measured 
that 38% of Black equates to 100% of Light Black

Can somebody explain how I create the qdif file prior to the 
linearize measurements.

In orther words what do i do with the 60% and 38% figures in the 
first stab qdif file.

When I have done this I will then do the linearization.

thanks



         


BTW Have nice prints with QTR
don't forget  "Life is just what we are looking for..."

R1800 mostly in B&W (80%)
Lyson Inks R8
Moab papers

JCP
 	      
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