Unfortunately, the PIXMA iP100 cannot be used with an iPad. We also do not have any compact inkjet printers that can be used with iOS devices. I apologize for this inconvenience.
This is very unfortuante as this would be the perfect printer to match with the mobility of the iPad. There is a natural market there if canon decides to add airprint. We just bought one from Bestbuy on the salesman's advice that we could print from the iPad with this device. Sadly, it sounds like we will have to return the printer.
My wife works overseas and needs a portable printer that will print from her iPad. If Canon were to make this printer airprint compatible, they would have a whole section of the iPad market to themselves.