| 摘要 |
When any of a plurality of terminal devices 3 accesses an MFP 1 that is networked to the terminal devices 3 , an IP address assigned to the terminal device 3 is stored in an address storage section 172 in the MFP 1 . A signal is periodically transmitted to all the terminal devices 3 corresponding to the IP addresses stored in the address storage section 172 in order to judge whether or not the terminal devices 3 are accessible to the MFP 1 . when it is judged that none of the terminal devices 3 corresponding to the IP addresses stored in the address storage section 172 are accessible to the MFP 1 as a result of the judgment, the state of the power to the MFP 1 is switched to a power saving state.
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