Almost everytime I attempt to use the Pixma 640 it does not respond to the commands from the pc at all. I am connected wirelessly and the router is about 1 foot from the printer but in a different wood cabinet in my desk. I have to unplug the printer, count to 10, and then plug it in again. It now works fine for an hour or so before it goes on another "walkabout".
Has anyone seen & solved this irritating issue?
