you have to pre-wash the fabric before running it through the printer, any oils (from handling) sizing,or chemicals will stop the ink from (soaking into the fibers) when i print anything out with my printer i make sure i am using PFD fabrics (prepared for dyeing) after i run it through i set it aside to *cure* for 24 hours then i heat set it...and set it aside again...i do this for a week. then i take it to the sink and run cold water through it. it also makes a difference your ink...if you use fill kits or buy the (recycled) ink cartridges they do not work very well. it is best to purchase the expensive inks, the ones that studies show work the best are the HP inks and the EPSON inks. and laser printers will not work.has to be an inkjet.
as far as the retayne goes...can't hurt.