yes, you can. there is dye vinyl (cheaper, absoluteley no waterproof) and pigment/waterproof vinyl (costlier, but waterproof). anyway both are from x2 more expensive than outdoor vinyl. but, there is a but. giving the fact that 1 liter of OK dye/pigment ink is about 30 euros (way less expensive that eco ink, about half), and rj900 is very, very low on ink consumption you may take in consideration some indoor jobs. if you use pigment inks the vinyl is more expensive, ink is more expensive, but if you laminate it can last 6 month (maybe more, facing north) outdoor.