Hey Ma, I believe they recommended waiting 24 to 48 hours before washing after printing. Can we get a follow-up up wash test video after 2 days to see if it works better?
Inkjet printers use black pigment ink (water resistant) the other colors are dye ink (water base I think), that’s why they washed out. I use the inkjet printer when I’m making black only designs and it works great. I also purchased black pigment ink refill bottle and refill my cartridges for pennies. There are many videos on how to do it. ✌️
I believe the inkjet printer ink has to be all pigment ink. I believe most of HP's OfficeJet printers use all pigment ink. Some inkjet printers have just the black as pigment and the other colors are dye. The dye will wash out. The type of ink in the inkjet that is use does matter. I'm about to try this hack with an hp officejet that uses all pigment inks. I need to want for replacement ink cartridges.