Vacuum Contact Frame - Too much pressure in Pt/Pd?

Adam Kimball (akimball@finebrand.com)
Fri, 16 Apr 1999 12:00:39 -0700

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Hi all,

I've been wondering about something. Recently I acquired a good condition
NuArc vacuum frame to use with my UV light bank. I mainly got it for screen
exposures in photogravure - where anything less than absolute contact is
ruinous. However, I've done a little Pt/Pd work with it and the results are
mixed. Contact is better - things are sharper. However, it appears that
prints exposed in the vacuum frame with 29 Bars of pressure show a tendency to
be uneven. I wonder if the supreme contact may exacerbate pooling problems?
I think I will install some sort of bleed valve, but until then - any
comments?

-Adam

• Next message: Kallitype: "Re: Stouffer T2115 Step Wedge"
• Previous message: Judy Seigel: "Re: Cyanotype problem"
• In reply to: Mac Legrandi: "Cyanotype problem"
• Next in thread: Carl Fransman: "Re: Vacuum Contact Frame - Too much pressure in Pt/Pd?"

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