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Digital BW, The Print

Index last updated: 2026-04-28 22:56 UTC

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Re: QTR Questions about Linearizing and reading patches???

2009-01-28 by Randy Rancier

Thanks for your comments Paul.  I ended up painting the outside of the orifice with 
"whiteout" making sure not to get any on the inside.  It has help greatly placing the sensor 
right where I want it.  I figured that the "whiteout" would be easy enough to remove if I 
ever needed too.

Randy

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "pr_roark" <pr_roark@...> wrote:
>
> "Randy Rancier" <randy_rancier2004@> wrote:
> 
> > The issue I'm having is with reading the "Ink Pattern Page" 
> > for QTR is with my densitometer (Spyder3Print); is that 
> > each patch or square is so small ...
> 
> I have the earlier model and found that if I put a white dot on the 
> outside of the read orifice on the side I'm looking at while reading, 
> it made it much easier to see what I was doing.
> 
> Also for linearization, I use this 21-step test strip:
> http://www.paulroark.com/BW-Info/21-Step.jpg
> 
> The markings at the corners of the test patches, particularly with 
> the dot on the read orifice, help me center the spetro.
> 
> I use the Calibration mode prints only for ink limits and relative 
> density.  It's usually obvious when making these readings if you've 
> hit some white paper.  You can always make a couple reads to make 
> sure.
> 
> Hope this helps.
> 
> Paul
> www.PaulRoark.com
>

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