Just bought myself a nice shiny new Canon i865 printer and it also prints directly to discs (wasn't that a stroke of luck, I thought :bigsmile: ).
Anyhow, Canon recommend burning the disc first as they suggest the printing "may" affect the burning ?!? More likely, I would think, is the possibility that any heat generated during burning could affect the ink if printed first.
I've only burnt a few DVD's so far, using Princo grade a's and Ritek G04's, both white coated. The Princo coating is all the way to the centre hole, which looks better when printed, whereas the Ritek have quite a large clear area around the hole. However, the Ritek coating is smoother and I think the printing looks better on these discs.
The finished article doesn't look quite the same as the original (tends to have a matt finish compared to the slightly glossy look of the originals), but, man, it's impressive!
Much nicer than the scrawl that passes for my writing.