Do you mean that blank DVDs need to be waterproof if I'm using a dedicated DVVD printer?
Only if the dedicated printer is Inkjet based, as the Dymo unit is.
The thermal type printers (NOT "Thermal Inkjet") don't use water-based inkjet ink, but I believe they need their own type of disk for printing on.
If you're responsible for making a large run of DVDs you might want to look into disk replication services.
For a small run, Epson is hard to beat for print quality. My experience with Epson has been that it's expensive for large runs and the printer will fail eventually.
Have Fun,
Keri
PS. My Stylus 220 went through several hundred (800-1000?) discs before it got really bad with jamming up and spattering on discs. The Stylus 260 I replaced it with didn't last as long and consumed huge quantities of ink in the process.
I tried an HP Photosmart AIO that printed on discs... It used far less ink but gave mediocre results, especially with blacks. It was mechanically sound and reasonably fast with no jams or spattering. Really bad software too.
Then I got another Epson, a Stylus 280 (same appearance as the Artisan 50). It seemed a bit better on ink than the 260 but tended to clog a lot. It failed after only a hundred or so disks - Same failure as the 260, lots of jamming.
Most recently, I got a Canon ip4500 with the "non-USA" firmware and a CD tray. It seems very sound so far and is the fastest of the bunch. I happened across an ip3000 for a backup that seems fine also.