I found the article about the archival quality of printer inks. It's in the April 2002 issue of American artist Magazine.
To sum it up, none of the printer inks passed the tests for fine art materials. Regular printer ink faded in 4 months under certain conditions. I don't know if this includes the giclee printing or not.
What was way more alarming to me was that digitally stored files are at a risk, the best CD's being rated for 50 years at best - BUT that's irrelevant if the technology to read the CD becomes obsolete. Magnetic tape is the worst, having a life of as little as one year. This is apparently how we almost lost POW and MIA data from Vietnam forever. This is also why 10 - 20% of the Viking Mars mission data has errors now.
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Sharon P.
http://get-me.to/chinaberries