QTR-Quadtone RIP

Hi,

I'm in need of a little clarification concerning Quadtone RIPs " Ink
Density Calibration"

  I'm printing with a Epson 1400 and using the MIS UT14 ink set. Please
bear with me I have a few beginner questions.

1. After I have printed out the "Ink Calibration Test Page" the
instructions are to look for the patch in which there is an apparent
100% coverage or slightly less...we do this for Ink position #1
(Black)...correct?

2. Assuming my first assumption was right I then pick for example the
patch adjacent to 85 as being my 100% point and then slide the Ink
Adjustment slider to 85 and make my 2nd test print.

3. The next step is a process of relative ink comparisons, Comparing Ink
#1 (Black ink) with each of the gray inks. To be clear I mean….Ink#1
with Ink#2, then Ink#1 with ink #3 and so on though all the remaining
gray inks…I am correct here?

4. We are also instructed to compare the 100% patch for the light black
ink with the #1 ink. Are we literally looking for the light patch where
we see or measure 100% coverage or are we selecting the patch adjacent
to the number 100 on the light black sample?



I'll leave it that for now, I don't want to wear out my welcome on my
very first posting.


I would appreciate any help with these basic questions, I promise there
are many more,





Many thanks, Seth



[Non-text portions of this message have been removed]

It has been a while that I made my last profile, so this is my best attempt.

> 1. After I have printed out the "Ink Calibration Test Page" the
> instructions are to look for the patch in which there is an apparent
> 100% coverage or slightly less...we do this for Ink position #1
> (Black)...correct?

Correct

> 2. Assuming my first assumption was right I then pick for example the
> patch adjacent to 85 as being my 100% point and then slide the Ink
> Adjustment slider to 85 and make my 2nd test print.

Correct

 
> 3. The next step is a process of relative ink comparisons, Comparing Ink
> #1 (Black ink) with each of the gray inks. To be clear I mean….Ink#1
> with Ink#2, then Ink#1 with ink #3 and so on though all the remaining
> gray inks…I am correct here?

Also correct, the densities are relative to black
 
> 4. We are also instructed to compare the 100% patch for the light black
> ink with the #1 ink. Are we literally looking for the light patch where
> we see or measure 100% coverage or are we selecting the patch adjacent
> to the number 100 on the light black sample?

I always compare the "number 100" samples of the 2nd print, but your question makes me hesitate slightly... there should not be much difference between between the two as in the 2nd print (with ink limit on 85) sample with number 100 should also (approximately) be the sample with maximum coverage. For the black ink that is true anyhow.  My expecation is that if there would be any difference at all it will dissappear after linearization.

Hopes this helps.

Joost