U of S | Mailing List Archive | alt-photo-process-l | RE: Image bleeding into masked area

RE: Image bleeding into masked area

  • To: alt-photo-process-l@usask.ca
  • Subject: RE: Image bleeding into masked area
  • From: Eric Neilsen <ejnphoto@sbcglobal.net>
  • Date: Fri, 27 Oct 2006 09:07:40 -0500
  • Comments: "alt-photo-process mailing list"
  • Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=sbcglobal.net;h=Received:From:To:Subject:Date:Message-ID:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Mailer:In-reply-to:X-MIMEOLE:Thread-index;b=EalfM8JJ6D9b3BKdDTp+sWeiRTP23wUT+iHodPZRdQsZwp2GMwdZ6yzRSqCd9lLeh7Xv9l626LlYzdvM5TGZJAbnSlNDhHEpIR6e+oCt9O4UdsqsHIyTAmZTfyreaJS/vE117dSjb9moqRJeYDFfqB/zSMcUBiNj0ck6NypMa/g= ;
  • In-reply-to: <a0602041cc167b65dd4e6@[]>
  • List-id: alt-photo-process mailing list <alt-photo-process-l@sask.usask.ca>
  • Reply-to: alt-photo-process-l@usask.ca
  • Thread-index: Acb5yy8Ri7oAHvJuRFu/QRWZ8o07bQABYSbw

Sandy, I 'd try these steps;

Use a sheet of Ruby lith rather than just the tape and place the neg on top
of the sheet rather than underneath so that the light is that piping away
into the coated area. 

Process face down and clear in the first bath also face down. 

If it goes away at higher vacuum than I'd first suspect that light is
traveling along the substrate/base of your neg. 


Eric Neilsen

> -----Original Message-----
> From: Sandy King [mailto:sanking@clemson.edu]
> Sent: Friday, October 27, 2006 8:17 AM
> To: alt-photo-process-l@usask.ca
> Subject: Image bleeding into masked area
> I am printing some Pt/Pd prints and the ugly monster of image
> bleeding into the masked area has surfaced. The masking is done with
> lithographer's tape. I  am printing with a vacuum and noticed that
> the problem goes away when I use very high pressure, say over 20
> inches of mercury. However, I don't like to use that much pressure
> and wonder what remedies others have found for this type of bleeding.
> I remember some discussion of this in the past on the list but can
> not find the thread.
> Sandy King