I'm a little torn as to whether to put this here or in the general hardware forum. However, my main reason for buying the i865 was to print inkjet printable CDs, and it's about that I'm intending to comment.
For other printing, I'll well covered by my three other printers - a HP Color LaserJet 2500n (main printer), a HP LaserJet 6L (old printer - with a change of rollers, it's still useful for odd media that the colour laser might disagree with) and a HP DeskJet 1220C (which will handle A3 paper).
I received my i865 today with a 100 disc spindle of Taiyo Yuden white inkjet printable CD-Rs I'd also ordered (these are the ones with the clear hub, not the printable hub 'picture disc' variety).
I plugged the printer into my HP JetDirect 500X - and it worked once. Several hours later, I concluded that there's some weird compatibility problem between the i865's parallel port and the JetDirect. I tried everything I could think of - different parallel cables, reflashing the JetDirect firmware, resetting the JetDirect back to factory settings - still no go.
It's probably HP's fault - it wouldn't be the first time that a non-HP printer has failed to work with a JetDirect. Fortunately I had an old Axis 560 print server in my junk box - that was dug out, firmware upgraded, connected to the network and we were away. Of course, the printer works fine plugged directly into my computer using either USB or a parallel port.
I'm very impressed with the CD-R printing capability of the i865. You slide the output tray into the machine, and push an adapter into the aperture over the retracted output tray, then push in the locking bar on the top of the adapter to lock it into the printer. The disc goes into a tray, which you slide into the adapter as far as you can, then the printer takes it from there. There's reflective marks on the tray, which the printer appears to use to get the correct registration.
The included CD-LabelPrint software didn't really do what I wanted. After a bit of trial and error (and only three wasted discs), I discovered that the right settings are:
"Paper size" 135.7mm wide by 255.7mm high.
Centre of disc 65.5mm from left hand edge, 104.75mm from bottom edge.
To print right to the edges of the printable area of the Taiyo Yuden disc, I find that an inner circle of 37.5mm and an outer circle of 118.8mm works fine without any noticeable 'overspray'. The outer diameter is possibly 0.2 or 0.3mm shy of what's actually printable, but I'd rather have that than loose ink round the edge of my disc. There's just the faintest hint of a white circle on my final test disc, which has quite a dark picture across the entire disc face.
I was using CorelDRAW 10 - though you can use any application you like to design your printable disc. It's almost certainly possible to configure Nero Cover Designer and similar applications to print directly onto discs in the i865 - I will try Nero Cover Designer, though not tonight. Just set media type "Printable disc (recommended)", paper source "Disc tray" and page size "CD-R tray" in the printer driver when you want to print the disc - you don't have to use CD-LabelPrint at all. You do not need the "Borderless Printing" option on to print on discs.
I'm extremely impressed with the print quality of the discs - the results look very professional. The printer was supplied with a Maxell printable 80 minute CD-R, which I'll probably use for something - though I concentrated on getting the right settings for the Taiyo Yuden discs as I've got a hundred of them!
The time to print a disc in Best quality mode is probably around 30 seconds, though I haven't timed it.
I hope this is helpful - at least one person in the forums asked me for my views on the printer when I said I'd ordered an i865. I got the printer from blankdiscshop.co.uk - they're about the only people who have it in stock!