On Behalf Of Graeme Rowatt

Others have covered some of your questions already Graham, however;

> 2.) As my friend would like to sell these prints I am 
> concerned that mixing ink/paper suppliers may have an effect 
> on print life/permanence. In addition to the unusual 
> disclaimer regarding "bright sunlight" and "humidity" are 
> there any other issues to consider.

I would consider those disclaimers normal! I would also _consider_ warning
of presence to heat sources, e.g. radiators. And there are probably a
million other things of which one is...

> 
> 3.) The final prints would be sold on stretchers, but are not 
> designed to be framed - a "modern" concept he tells me. 
> Should we protect the finish using something like Lysons Print Guard?
> 

...that the print should be framed behind glass. I forget any links to
constructive sources for you now (though there is an article somewhere on
the web about print permanence by Barbara Voight (from memory) that explains
that a substantial portion of inkjet fading is related to light + gas. That
is to say, if a print is framed behind glass, there is only so much reactant
gasses available to contribute to fading. Leave the print open to the air,
and there is plenty of gas available to contribute to the fading. Thought
experiment; if glass alone stopped substantial amounts of light (and it does
apparently) and that was the 'sole' cause of fading, then prints indoors
would probably not fade fast.  Search also for Epson 1270 'orange' fading
which was attributed to ozone causing a break-down of the cyan (?) ink
causing some colours to rapidly fade to orange even in the dark (but
typically in well ventilated rooms. Also look for 'East Coast Fade'
(apparently in the east coats of the USA this is more prevalent due to ozone
from the ocean.

It sounds like you may want to consider pigment inks (supposedly less
susceptible to ozone / gas fading) - but these could have their own issues,

Nij

Nigel Rheam
www.mwords.co.uk   Digital Fine Art 



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