The manual says that 18" is the minimum, but I know that I've been successful loading 17" rolls in the past, just as I've loaded 8" paper instead of the 8.3" it says is the minimum sheet width. I'm sure to push it as far as 10" though, you will need to perform a little trickery. I've never tried scabbing onto a roll, but have taped small samples of sheet material together to get past the length requirements when I have been trying to proof something on slightly undersized scraps. I don't think that the width is measured past the first inch or two if the roll is properly aligned, or six inches or so if it advances the paper for a second try at alignment. Once you get the paper loaded, it doesn't ever check for width again, so you can leave your 10" roll loaded with no issues. Just tape a scrap of the same thickness paper with some tape on the back side as a temporary fudge. Unless it is extraordinarily thick media you shouldn't have any issues.