Re: Shelf life for printed transfers off of Epson 4800 Hybrid I know that you don't want sublimation transfers to be exposed to air for an extended time. Most people that I have talked to have had very little problems printing 24 hours in advance. I have also heard 48 hours is fine as well. Anything longer than that you might want to keep the transfers in a plastic, ziploc bag. You just need to be careful of how you handle the transfers. Don't let the oils from you hands go across the printed part of the transfer.
I have no clue if the same holds true for ChromaBlast. I know that for other types of transfer paper and ink, there is not an issue with printing things in advance several days and then pressing. But, you probably want to keep the transfers in a controlled environment (i.e. not the trunk of a car - seen it once and it was not good).
Hope this helps. Best wishes.
Mark |