Re: fogged digital negative?
wow! 2 weeks is a long time. I haven't had trouble with others that
I've used after drying a short time (less than a day, a day or two.
But I really haven't paid much attention to how long I've let the
negatives dry before using. I printed a replacement for the bad one
last night and I plan to print with it today. But, I'll take your
suggestion and print another to "cure" for a few days. I'm also going
to pay more attention to the time I allow the sensitized paper to dry
before printing with it. I think that may have been a problem also,
as Jon pointed out. I had a couple of prints stick to the OHP around
the edges of the paper - just a little, but enough to know they
definitely weren't dry yet.
Anyway, thanks for the feedback from everyone. I think I just need to
not rush things.
On Apr 13, 2008, at 7:44 AM, Manuel Gomes Teixeira wrote:
I know exactly what you mean.
This problem happened to me several times with both the Pictorico
and the Agfa Copyjet.
The only way I found to overcome this, was to let the OHP to dry
for several days without any permanent contact with any other
surface, like a film sleeve.
I think that the problem is in chemical interaction with with the
ink with and the paper before the negative is completed "cured".
When I said several weeks I mean at least two weeks.
If I don't respect this drying period I'll notice some funny
"fogging " patterns that fit perfectly with the contact zones of
the OHP film with the paper.
My DN's are printed with the Epson 2200.
I hope this helps
Manuel Gomes Teixeira
On Apr 12, 2008, at 9:25 PM, Gregg Kemp wrote:
I was printing some cyanotypes today and one of my digital
negatives seems to have "fogged". I've printed with this negative
3-4 times before, with fairly consistent results. But today it
added a dark ring around the print. When I looked at the negative,
it looked OK on the inkjet side, but the other side had a strange,
silvery fog to it. The effect was to lighten the negative and
print out darker around an area about 6 inches in diameter.
Is this a normal problem for a digital negative - a short life
span? Or did I do something wrong - maybe use it too soon after
printing the negative. I don't remember how long I waited before
using it to make a print. But I've used it several times over
several weeks. I'll make another negative, but just wanted to
check here to see what I may have done wrong. The negative
requires a 9 minute exposure for the cyanotype and paper I'm
using. I'm printing with a UV lightbox that's around 26 x 20
inches or so, and about 4 inches from the bulbs.