Damage to alt-photos by scanning

Jan van Dijk (janvdijk@bart.nl)
Thu, 12 Feb 1998 11:05:44 +0100

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To the list. 
 
A collegue of mine had an interesting question, which I couldnot answer, but maybe someone on the list can.
The subject can be of interest to all alt-photo workers, because one of our goals probably is stability (besides of coarse our main goal "expression").
 
It is more or less known what kind of illumination is allowed for pictures in a museum envirement. (Official recommendations).
There is also an American report on changes in densities (of salt prints, platinum prints, etc.) before and after a historic photo exhibition due to the light conditions (which proved how unpredictable the stability of those photos to light were).
I also know about a Dutch report on the use of flashlight in musea. 
 
But what about scanning say a salt print (or other alt-processes) with a HP Scanjet 4c (or probably worse: a photocopier)?
 
Is there someone on the list knowing anything on that specialised subject? (Recommandations, reports, density readings before and after exposure, etc.) Looks like a difficult item. There are so many variables: I.R. U.V. intensity, duration, kind of process, the effect of sudden local changes in Lumen and heat, etc.
 
 
Thanks for your possible responces.
 
janvdijk@bart.nl
From ???@??? Thu Feb 12 08:12:59 1998 Return-Path: Received: from skybat.usask.ca (skybat.usask.ca [128.233.1.27]) by mail2.netcom.com (8.8.5-r-beta/8.8.5/(NETCOM v1.02)) with SMTP id FAA01990; Thu, 12 Feb 1998 05:05:51 -0800 (PST) Received: from process.sask.usask.ca by sask.usask.ca (PMDF V5.1-10 #27648) id <01ITHF1EWBXS8Y56Y6@SASK.USASK.CA> (original mail from quryhous@midcoast.com); Thu, 12 Feb 1998 06:59:59 CST Received: from rtfm.midcoast.com by sask.usask.ca (PMDF V5.1-10 #27648) with ESMTP id <01ITHF1DWLE08Y57CV@SASK.USASK.CA> for alt-photo-process-l-expand@process.sask.usask.ca; Thu, 12 Feb 1998 06:59:23 -0600 (CST) Received: from modem-c-005.midcoast.com (modem-c-005.midcoast.com [208.153.20.5]) by rtfm.midcoast.com (8.8.7/8.8.5) with SMTP id HAA21755; Thu, 12 Feb 1998 07:58:52 -0500 Date: Thu, 12 Feb 1998 05:22:29 +0000 From: Jonathan Bailey Subject: Re: Damage to alt-photos by scanning In-reply-to: <01BD379D$C8ECD7C0$LOCALHOST@JVD> X-Sender: quryhous@midcoast.com To: Jan van Dijk , alt-photo-process-l Message-id: <3.0.1.16.19980212052229.192FD9C4@MIDCOAST.COM> MIME-version: 1.0 X-Mailer: Windows Eudora Light Version 3.0.1 (16) Content-type: text/plain; charset="us-ascii" Comments: "alt-photo-process mailing list" X-UIDL: 57a44e5ab9cd8280ed743989490c9fa1 Greetings- Many of us would appreciate the more conservative use of sending attachments to the entire list. I might suggest you make available this information on a request basis, sent directly to the interested party. Thank you for your understanding. Jon Bailey St. George, ME