Digital BW, The Print

Nick,

The air brush does sound like a useful accessory for mixing.  I use a
wire-wound ("Mayer") rod for more accuracy than a swab, but it tends to tell
me mostly about the dark end of the scale.

As to your adding cyan to your sepia mix to make it less red, try some
yellow instead.  The old sepia toner mix I used was 84% light carbon gray
(e.g., UT2 LM or UT7 LC) 8% Y and 8% M.  To get different shades of sepia,
the Y to M ratio is what made the most difference.  If the sepia was the
right hue, but the gamut was too low, then I'd change the ratio of the color
pigs to the light carbon.  

I now use R800 clone red instead of magenta, but it still takes yellow to
get the hue to where I want it.

Paul
www.PaulRoark.com 


> -----Original Message-----
> From: DigitalBlackandWhiteThePrint@yahoogroups.com
> [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of Nick H.
> Nugent
> Sent: Sunday, June 19, 2005 1:13 PM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: [Digital BW] Airbrush makes great ink mixing tool (vs. cotton
> swab)
> 
> Hello folks,
> 
> This posting is for those that design inksets such as Paul Roark, or
> like me that want to come up with a particular shade of sepia.
> 
> My airbrush has been sitting around doing nothing for a while due
> recent development in GLOP for glossy papers and roller applications
> for matte media. I found a use for it last night when I was rolling my
> own sepia shade and after getting frustrated a bit with the cotton
> swab.
> 
> The airbrush spits out ink much like an inkjet and you spray it
> straight from the mixing bottle. Using an Iwata Eclipse BCS with
> adjustable spray you can spray it light, dark and anywhere in between
> to simulate ink intensity with ease. Test spray on your target piece
> of paper for accuracy.
> 
> I got now a sepia tone that I really like but it's still a tad too
> reddish magenta. Maybe a few more drops of cyan will do. This was the
> result of my spray test on a paper different than my target paper. And
> the new 1160 spongeless cart just makes it so easy to reload ink.
> 
> I'm using this sepia not as a toner, but as a gray in a two-ink QTR or
> IJC/OPM profile. Somehow I cannot get the tone I really like when I
> use it as a toner in the profile.
> 
> In this 1160 setup I have MK in the black cart, PK in the cyan
> position, the newly concocted sepia in the yellow, and perhaps I can
> come up with another sepia in the magenta position for a paper that
> doesn't work well with this sepia.
> 
> Anyway, the airbrush makes an excellent aid in ink mixing. I hope some
> may find this information useful.
> 
> --nick
> 
> 
> 
> 
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