I have a Lexmark Prevail Pro 705 printer connected to my network wirelessly. I can no longer scan from it using Image Capture. I can print to it. I can scan from it using a Windows machine. Most updated firmware. Driver v 11.0 Any ideas?

I have a Lexmark Prevail Pro 705. Latest (as of july 30, 2012) firmware. Mac driver v 11.0

I can no longer communicate wirelessly with the scan feature of the printer. I can print no problem using a wireless connection. Using a window's machine I can scan wirelessly from the printer. It seems that my iMac (OSX 10.8, 3.06 Ghz Intel Core 2 Duo, 24inch early 2009) is not connecting to it. I can put a USB cord into the computer and scan.

Any ideas? This came up starting 2 weeks ago. I had hoped the operating system upgrade would solve it. It has not. I see nothing on the Lexmark boards about this. Since the printer works fine in both print an scan mode using a windows machine and can print fine from a Mac but not scan I don't have any ideas but I suspect it is the Mac.