I'm putting this topic here so everyone with disc printers can read it.
I'll move it to the proper forum in a few days.
After your disc dries, please wipe the ink from the inner hub and around the outer rim.
The reason I ask is because the ink will rub off onto the mailing sleeve or what ever it's touching when you mail it. Sometimes the ink will rub back on to the disc and smear it pretty good.
I've been an offender of this as well.