Patent ID: 7382480

Claim:
A supervising system for surprising a plurality of image forming apparatuses, comprising: a central control apparatus; and a mobile computer selectively connected to one of the plurality of image forming apparatus with a wired or wireless interface, and configured to execute communications of the connected image forming apparatus of information with said central control apparatus via a network, wherein said mobile computer includes: an operation history information inputting device configured to input operation history request information; and an operation history information informing device configured to inform the operation history request information to the central control apparatus; and wherein said central control apparatus includes: an operation history information storing device configured to store operation history information related to an operation executed by a service person for each of said plurality of image forming apparatuses, when the operation history information is received from each of the plurality of image forming apparatuses; a reading device configured to read prescribed operation history information from said operation history information storing device when a request for the operation history information is received from said mobile computer and an operation history information transmitting device configured to transmit the operation history request information to said mobile computer.