Referencing your picture of the connected networks, when you do not broadcast an SSID it will show as "Other Network". But if that is your wireless network, the signal is too weak.
Can you explain the "printer server" network you seem to be connected to?
If you right click on a network and look at properties, there are options for connecting automatically and connecting even if the SSID is not being broadcast. If the printer server is not your wireless router, perhaps remove the option to connect automatically. If it is your wireless router, then you are connected as you would like.
If the Unidentified Network is not what you want to be connected to, right click and select disconnect, then adjust the settings so it...