Digital BW, The Print

John,

That interesting sample looks like it ought to be able to be printed with a
monotone inkset of the right tone/hue.  It looks like a carbon-sepia type
tone.  For UT7 sepia I use a combination of carbon, 7600 yellow and R800
red.  Using an old 3000 makes this more difficult because you'll need more
than a single ink due to the large dots.  The nice thing about the newer
printers is that you can mix just a single ink, like the UT7-sepia, and run
it all the way to where a dark carbon (UT7-C) and then the black can take
over the density formation.  To make such a single custom ink, I recommend
starting with the light carbon UT7-LC (or the sepia, which might be close)
and adding color as needed.  If that ends up too dense, the UT1
hextone-Y/quadtone-M is about the lightest pure carbon ink MIS has.  The
UT-FS-Y is a bit lighter, but has some cooling pigments in it.

Good luck.

Paul
www.PaulRoark.com 


> -----Original Message-----
> From: DigitalBlackandWhiteThePrint@yahoogroups.com
> [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of
> mojojones2001
> Sent: Friday, July 29, 2005 7:54 PM
> To: DigitalBlackandWhiteThePrint@yahoogroups.com
> Subject: [Digital BW] Re: Split toning procedure (was Newbie question -
> what is duotone?)
> 
> This is very interesting.  I've been trying to create a digital
> printing method that I used to do in the darkroom.  It wasn't really
> split toning but achieved a split tonality.  I would take a
> traditional BW print that had been purposefully printed dark and
> bleach it back heavily with a potassium ferrocyanide solution.  The
> solution would not only bleach the highlights, but stain the upper
> tonalities to a yellow/sepia hue.  Unfortunately, the technique was
> quite difficult to control and even though I got several prints that I
> liked it was a hit or miss affair.
> 
> I've been able to duplicate the look to a great degree on the screen
> using PhotoShop's duotone function with custom curves but I have yet
> to get them to print.  Here are some examples:
> http://homepage.mac.com/mojojones/display/page1.html  If you look at
> the detail and duotone dialog you'll notice that the tonality stays
> neutral and progressive until about 50% where it becomes light then
> shifts to the yellow tone for the upper tones prematurely bleeding off
> to white (the bleached effect).
> 
> I first tried to print these images with standard color inks but the
> neutral tones where not neutral.  So after reading about MIS viable
> tone inks I thought maybe I could to it in a similar way.  So I set up
> an old 3000 with the FSN inkset and replaced the Magenta place with a
> custom mixed yellow/sepia tint the was a similar density to the K tint
> it replaced.  I've only just started experimenting but as yet the
> results haven't been to acceptable.  I'm not getting enough density in
> the yellow/sepia tones and they are going green due to the blue tint.
>  I'll probably have to add some black to increase the density of the
> custom tint and restrict the blue tint to the lower tones.
> 
> John J.
> 
> 
> 
> 
> 
> 
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