From: Tom Ferguson (tomf2468@pipeline.com)
Date: 04/03/02-02:58:40 PM Z
I've made digital negs using Dan's color fill method for for platinum,
cyanotype, kallitype, and gum. All have been acceptable.
>From Dan's book and what I've read here, I wonder if the brand/type of ink
isn't an important variable?? I suspect some inks block UV better than
others (not just a color issue). I'm using "Darn Good Ink" from Inkjet mall
(love that name) on an Epson 1200 printer. This is marketed as a direct
replacement (although cheaper) for Epson ink.
I have to decrease Dan's suggested shadow contrast and increase his
highlight contrast in all cases. Not a bad thing, I get a straighter curve
than he uses :-)
I used the word "acceptable" above. I do have a few issues. I haven't worked
out exact curves for my platinum or Cyanotype methods. I "believe" I'm
getting a SLIGHT loss in resolution compared to optically enlarged negs. I
haven't tried image setter output, just desktop printers. For a couple
series I'm working on (gum prints and kallitype on cloth) the slight loss of
resolution is a "non-issue", so I'm very happy.
Let the "negative" dry ink/face up and untouched for 20 minutes before use
or you(I) may get smudging and loss of resolution.
-- Tom Ferguson http://www.ferguson-photo-design.com> From: Katharine Thayer <kthayer@pacifier.com> > Subject: Re: Spectral density [was: Re: Inkjet transparencies ] > >SNIP> > > I started asking myself these questions when, using the same printer and > the same inks as Dan reported giving good results for platinum, I found > the orange color table method useless for gum; at any color density it > simply didn't block the UV enough to make an image; I just got a colored > rectangle. The colorize by fill method worked better, but still not > satisfactory for my needs. Sarah Van Keuren reported similar results for > cyanotype here a year or more ago, which Joe's results seem to > corroborate. I'd be curious to know whether anyone with any printer has > made an orange negative by the color table method that works for gum. > SNIP>
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