Well, for years I've used regular fabric or muslin, one of several inkjet HP printers I've owned over the years, ironing after waiting "a bit" and sewing onto a washed/dried quilt. NO other process.
Later - maybe weeks, maybe months - I have washed my labeled quilts (they are ALL washed!) with no lost of the printing on those labels.
Not sure why I have success when others don't. I'm sorry.....maybe I just "hold my mouth right" as my 89 year old Mother would say.
Jan in VA