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QTR-Quadtone RIP

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Questions about Linearizing and reading patches???

Questions about Linearizing and reading patches???

2009-01-27 by Randy Rancier

I'm new to the group also!

The issue I'm having is with reading the "Ink Pattern Page" with my densitometer 
(Spyder3Print); is that each patch or square is so small it is hard to tell if I have the sensor 
directly in the center or overlapping into the next square.  The instructions were very adamant about not resizing or changing the inkseparation.psd file in anyway, although I've 
done this when printing targets for developing color profiles, which ColorData says is ok.

Is there a larger "Ink Pattern Page" out there that would make reading the "patches" much 
easier?  Seems that reading the 21-step patterns is the only way to linearize custom curves.  
I know that you can use a scanner to set your ink limits with, but I see no way to linearize 
using a scanner; if so what is the procedure?

I'm going to try painting, just around the outside tip of my densitometer with some 
"whiteout" which should make it much easier to see the placement of the densitometer 
sensor directly over the squares, particularly the dark ones, which are especially hard to see.

Thanks,
Randy

Re: Questions about Linearizing and reading patches???

2009-01-28 by robert49brake

--- In QuadtoneRIP@yahoogroups.com, "Randy Rancier" <randy_rancier2004@...> wrote:

> I'm going to try painting, just around the outside tip of my densitometer with some 
> "whiteout" which should make it much easier to see the placement of the densitometer 
> sensor directly over the squares, particularly the dark ones, which are especially hard to 
see.

There is a silver Sharpie that works very well for that.  It is difficult but only for the 
Calibration page.  The 21 step wedge is much easier to read.  When in doubt read the patch 
a number of times.  There are other step wedges around just make sure you are using the 
correct gamma.

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