Patent ID: 8379244
Filing Date: 2013-02-19
Classification: G06F,H04L

Abstract:
1. A network printing system, comprising: a mail server to provide a mail transmitting/receiving service; an image forming device to access a mail account allocated to the mail server and receive a mail transmitted to the mail account; and a host to transmit to the mail server a mail including channel information corresponding to a channel established for the host to communicate directly with the image forming device, the channel information including an Internet protocol (IP) address and a communication port of the host, wherein the image forming device attempts to access the host by using the channel information included in the received mail, wherein the host transmits a print data through the channel formed in advance by the image forming device's accessing the host, wherein the image forming device is connected to an internal network, the mail server and the host are connected to an external network, and access to the internal network from the external network is restricted by a firewall.