I admit to being relatively naïve when the subject of digital print out gassing is discussed.
So, a few questions:
If one simply leaves a completed ink jet print open to the air for a week before framing would a good deal of the out gassing be eliminated? To be slightly more "aggressive"- if one leaves the print on a table and allows a fan to blow air over the surface for a day or two will the out gassing be eliminated? Also, many of us take precautions not to place our digital or analog prints in direct sunlight. So, if a digital ink jet print is thoroughly dry and t "ventilated" for a day or two, and then when framed is kept out of direct sunlight, will out gassing still occur?
Do all digital ink jet inks evidence the same problems with out gassing? Are prints made with some inks more likely to "out gas"?
Elliot
From: DigitalBlackandWhiteThePrint@yahoogroups.com [mailto:DigitalBlackandWhiteThePrint@yahoogroups.com] On Behalf Of goch@...
Sent: Wednesday, April 16, 2014 10:31 AM
To: DigitalBlackandWhiteThePrint@yahoogroups.com
Subject: Re: [Digital BW] condensation from print
What temperature would be effective and safe for most inkjet media? This seems like it could be a do-it-yourself project. Mild heat and air flow are not difficult to arrange.
Message
Re: [Digital BW] condensation from print
2014-04-16 by Paul Roark
Just a few of thoughts on this -- First, out-gassing is an issue for only glossy papers. With matte papers the glycol, which is said to be the main culprit, just wraps itself around the paper fibers and stays there. Glycol has an affinity for paper. The barrier in glossy papers is the problem. It stops the glycol from reaching the paper. Second, the glycol affinity for paper can be used to "sponge" the glycol out of the glossy coatings by stacking the glossy prints with plain paper interleaving.
Glossy dye prints also have the same issues, but there appear to be some offsetting issues there. The dyes are said to "migrate" initially in a manner that makes them more stable in the long run. While old style dyes migrated too much and made the image less sharp, the newer ones appear to simply be migrating over very short distances to a place where they can attach themselves to the coating or other dye crystals and become more stable. The moisture in the coating helps this process. Some have said to put a dye print in a bag to retain that moisture longer.
Apparently there is some ideal amount of humidity in the print, and keeping that stable is definitely a good idea. Whether the remaining glycols and glycerol help or hurt with that is not something I know the answer to. The cycling of the humidity, with the resulting differential expansion and contraction of papers and coatings, has been said to be one of the primary causes of their destruction. An interesting window test of papers may have exaggerated that due to direct (through the window) sun hitting the papers. But, as you can see here --
the bottom line was not good for any inkjet papers, particularly the glossy ones.
There are some reasons I consider Arches paper my top medium and glossy dyes my "impulse buying" lower priced one.
Paul
On Wed, Apr 16, 2014 at 8:00 AM, Elliot Puritz <drpuritz@...> wrote: