I have the same problem. Unfortunately I can't "browse devices" from a menu on image capture. The triangle normally used to display available devices shows nothing.
I can only get the scanner to show up in image capture if I share it on my network (which I don't want to). Then, I can scan.
I also can use the scanner if I use "Sys pref->print & fax-> scanners, select MG 5220->open scanner.
but in mpNavigator...still, no dice. 'Scanner not connected". Drives me nuts.
I cannot find my printer scanner cannon Pixma MP560 in image capture. It shows in system prefs.
However, I am using the Canon with my network. It was **** to set up but then worked well. I can send from my mac and my MBAir. And scan to the mac, I haven't tried to the air.
Then it all went wrong. Probably my fault.
I had to connect the scanner with usb to restart it. Then take out the USB and it continued to work.
I am a little dis-inclined to make changes as it works unless anybody can give me a reason for doing so.
By the way, the Cannon is much slower than my old HP. Seems to take a long time thinking before anything happens. You almost think it has gone wrong again!
I'm having the same problem, but with a MacBookAir. From my wired iMac, I can print and scan to my wireless MG5220. From my wireless MBA, I can print. The scanner shows up, but gives me the communication error when I try to access it. I'm using a Cisco Valet Plus router.
Has anybody been able to scan from their wireless MG5220 on a wireless Mac? If so, what router are you using?
I was having problems trying to save my scanned images to my imac. I found this link and followed the instructions and it solved the problem!
Hope it helps you too!