Customer Rating: 
Summary: Best Travel Printer
Comment: I've been using the IP90 for several years. (I'll replace it with the IP90v if it ever dies but it doesn't show any sign of that so far.)
Pro: It's very small and light, even with the optional battery. It fits in the laptop bag or backpack next to the computer. Without the battery it's about the size and weight of a hard cover book.
I originally bought it for printing text on the road (boarding passes, email, web pages, maps & directions, etc.) and it does that very well: fast and high quality. It handles paper up to 8.5X11. I do a lot of digital photography and normally print at home on the HP desktop machines. I tried a few 4X6 snaps just for the heck of it and the quality was very good so I started experimenting with bigger prints on 8X11 photo paper. The quality was excellent, better than some of the bigger, more expensive HPs at home.
The cartridges don't have a "time limit" like the HP ones do. I've used cartridges that were over a year old with no problems. I shop around for the best price and buy a few at a time. They are tiny so you can carry a few spares with minimal space and weight.
Con: It is light and plastic. I have yet to get any damage, even with constantly tossing it in and out of the airline overheads, but I also always pack it in the middle of the laptop bag so that it's well protected. You probably could damage it if you beat on it too much.
It doesn't hold a heck of a lot of paper at one time so you won't be doing high volume printing, but it does hold a dozen sheets of regular paper or a half dozen sheets of heavy photo paper with no problem (probably more but that's what I usually load).
The prints aren't cheap. The cartridges are small and expensive and you don't get a heck of a lot of prints, especially if you are running high quality 8X10 color prints. I get about a dozen high quality 8X10s on a color cartridge, substantially more with 4X6 snaps (I dunno about black & white text only because I've never printed enough to put a dent in a cartridge but it will do dozens at least).
On Balance: this is not the printer for heavy home or business use. It's too fragile for that and the prints are too expensive. But for traveling, it's the best trade off for size, weight and print quality versus expense. If you need to print on the road, it's the way to go.
