Patent ID: 9626135
Date: 2017-04-18
CPC Classifications: G06F

Claim:
1. A network printing system comprising a plurality of host terminals and a network printer connected to a network for common use by the plurality of host terminals, wherein; the host terminals each comprising; a print port closing unit configured to send a finish command to the network printer via a print port assigned to the network printer upon completion of print data transmission via the print port, the finish command instructing a disconnection of the host terminal from the print port of the network printer; and a forced disconnection request command transmitting unit configured to send a forced disconnection request command to the network printer via a communication port different from the print port after transmission of the finish command, the forced disconnection request command requesting a forced disconnection of the host terminal from the print port of the network printer; the network printer comprising; a finish command acknowledging unit configured to receive the finish command sent from the host terminal via the print port; and a print port forced closing unit configured to execute the forced disconnection of the host terminal from the print port via the communication port when the finish command is not received and the forced disconnection request command is received.