1. Turn off Wireless, from the Wifi menu on the menu bar.
  2. Open Google Chrome (Don’t worry, it won’t crash with the wireless turned off.)
  3. In the “Chrome” menu, go to “Preferences”.
  4. Scroll to the bottom of the Settings page, and select “Show Advanced Settings”.
  5. Scroll down to the section titled “Google Cloud Print”
  6. Uncheck the box titled “Show notifications when new printers are detected on the network.”
  7. Turn your wifi back on.