Wow, you are all so helpful! I don't have time to wait for a new bottle of Bubble Jet Set so I am starting over with those I have on hand, hoping that wasn't the problem (although I will order some). Prewashed the fabric and did the first treatment with the chemical. When it's dry and ironed onto freezer paper I will run it through the printer. THEN I will wait a day or two, ironing it a few times, before putting it through the rinse process. One thing I might have done wrong before was not rinse it long enough, so there was still "loose" dye that bled. Also, I will pat it with a towel as soon as I take it out of the rinse, so that any loose dye will bleed into the towel rather than the surrounding fabric. I'll let you know how I make out.
I also plan to look into soda ash (washing soda, according to Wikipedia) ... is it available in supermarkets? I see some Soda Ash Dye Fixer on Amazon. Same thing? I assume you use that for the first step, to prepare the fabric for the ink/dye?
How do these products/chemicals compare with Synthrapol and Retayne?