I decided to look further. I opened Hard Drive, System, Library, Preference Panes, Accounts Pref Pane - Under that I found the Network Scanner! I unclicked it, restarted and ----- it's still there!
Thanks for your quick response. I'm using Mountain Lion 10.8.5.I got a new printer and my husband is using the Pixma 520 on his computer. I had photo sharing set up with his printer. I turned that off and the icon went grey. But it is still there. I'...