Fair enough - I haven't used defrosted inks yet - as far as I know. If I have any reason to suspect changed behaviour it's easy enough for me to run a quick accuracy test relative to previous known conditions and see whether anything has changed.
You know, as has been said before above, it is a very interesting topic, Mark, especially given what you have just stated, that you could run a comparison test. You know, it would make a very interesting study and article to purposely freeze the inks, re-thaw them, then print with them and conduct comparison tests to find out what happens. Of course, I guess it would be in Aardenburg's purview to test for longevity issues. But as for the effect immediately, it would make for an interesting article. Would your contacts at Canon be open to such a comparison and supply inks?
Just a thought.
-Mark L.