Patent ID: 9703969
Date: 2017-07-11
CPC Classifications: G06F,H04L

Claim:
1. An image forming system, comprising: a service providing server installed on an internet to provide a predetermined service; and an image forming device, installed on a local network connected to said internet via a firewall, storing therein an application to use said service installed in advance, wherein said service providing server includes: a managing part managing user registration information with which a service user who uses said service with said image forming device and said image forming device corresponding to the service user associated with each other are registered; a ticket issuing part issuing an application delete ticket to delete said application installed in advance on said image forming device when the service user registered with said user registration information terminates said service; a ticket sending part sending said application delete ticket to a device which has accessed said service providing server when the access from the service user, who is registered as the one who has terminated said service with said user registration information, is detected; and a relay server communication part establishing communication with said image forming device via a relay server when said relay server, which establishes a connection with said service providing server over said firewall, is installed on said local network, when the connection is established with said relay server, said application is deleted using the connection, said ticket issuing part issues said application delete ticket when said relay server communication part is not allowed to establish communication with said relay server, and said image forming device includes: