"Toshiba Printer Offline" is brought on by a printer that is not connected to the network.
There is a good chance that a piece of paper got trapped in the print queue, in which case the printer will likely show an offline error message before going offline completely.
Verify that your device and printer are correctly connected to the USB wire. The Toshiba printer and the system shouldn't have any loose or broken connections. The USB should have a secure connection on both ends.