Patent ID: 7221885

Claim:
An image forming device including input means which inputs an operation instruction from an operator and display means which provides said operator with information and with said input means, the device comprising: individual authentication means which is used for authenticating said operator; operation history memory means which stores an operation history, based on an operation instruction inputted by said input means, for each individual authenticated by said individual authentication means; operation history display means which displays, in said display means, an operation history of an individual authenticated by said individual authentication means, from the operation history of each individual memorized in said operation history memory means; operation history selection means which selects an arbitrary operation history among the operation histories displayed on said display means; setting means which executes a setting on said image forming device, based on the operation history selected by said operation history selection means; device state obtaining means which obtains a state of said image forming device; and display control function setting means, wherein said operation history display means controls the display of the operation history on said display means according to the state of said image forming device obtained by said device state obtaining means, wherein said operation history display means has an indicating function for indicating an unusable operation history, according to the state of said image forming device obtained by said device state obtaining means, wherein said display control function setting means activates or deactivates the indicating function of said operation history display means, and wherein said operation history display means controls an active/inactive state of said indicating function, according to the setting state of said display control function setting means.