Since 'way back in the dark ages of the '50s, "printable CDs" and DVDs have become quite commonly available, and there are a number of inkjet printers that claim to be able to print on disks.

The critical requirement for printing on them is that the printer has to be able to pass the disk through without any flips, folds, turns or bends, and has to be able to handle the thickness of the disk - which is a little more than the heaviest paper most printers are meant to handle. All of the CD/DVD-capable printers I've seen, that give enough info up front to tell, require the use of a "carrier sheet," presumedly something like a piece of cardboard with a hole to fit the disks(?), although I haven't found a picture of one of them.

I find that the nice white surface of the printable CDs/DVDs gives a much more legible mark when you use a felt-tip pen on them, and there's no price difference for the printables vs unprintables. I've been using quite a few "printable" disks even though I still just scribble on them with a felt tip.

I have had two printers that claimed to be able to print on CDs, but they were both HPs so of course neither of them lasted long enough for me to order a carrier to try it out on a disk.

John