Stick on labels: Avoid like the plague on DVD. Read what "ntrprs" said. But the major issue is that, due to heat in dvdplayers, labels tends to lose their stickiness and can lift. I don't need to tell you that particular event can cause damage to your dvd player. Mind you, this is not the case with cd-r since it revolves at much lower speed.
Printable Inkjet DVD's:
- First, There is no such thing as ink melting. Ink is a pigment and has no liquid properties per se. They are however very vunerable to water or humidity, it makes the pigment unstable again and causes smearing (even from the humidity of your fingertip).
- They are also vulnerable to sunlight. It cause the ink pigment to fade
That is why spraying the DVDs you want to keep for a long time an interesting solution. It will keep the dvds safe from humidity and Sunlight (UV rays)
Inkjet printable DVD comes in various forms : Silver coated, for that shiny looking finish and plain white, great for photos or full disk graphics. There are also two kind of disks you can buy: Hub printable and Non- Hub printable. A hub printable disk will let you print all the way to the inner rim of the disks (most dvds have label printed to the Hub)
A non-hub printable leave a sizable chunk of the inner rim unprintable (most audio cds)
Printable Thermal DVD's:
These type of printable disks need a thermal printer wich uses heat to put color dots on it. This is probably the source of the "melting ink" myth. It is doubtfull that the heat of a dvd player would be enough to affect the ink of a thermal printed disk, let alone the fact that thermal printing is one of the more robust form of printing these days...
Well, it think thats it folks, hope this clears up some misunderstanding I have read in this thread!