Patent ID: 7889371

Claim:
An image forming device comprising: an image forming unit to form a color image on an image forming medium if an operation mode is a color mode and to form a monochromatic image on the image forming medium if the operation mode is a monochromatic mode; an identification unit to identify a division to which a user belongs who has requested image forming; a division management unit to manage the number of pages having the image formed thereon for each division identified by the identification unit; a color management unit to manage the number of pages having the image formed thereon in the color mode; a control unit to execute the image forming in the monochromatic mode for a job requiring the monochromatic mode in the image forming unit without identifying the division by the identification unit, in a case where the division management unit and the color management unit are valid, the control unit executing the image forming in the color mode in the image forming unit, if the division to which the user belongs is identified by the identification unit, in a case where the division management unit and the color management unit are valid, and the control unit executing the image forming in the color mode and monochromatic mode in the image forming unit if the division to which the user belongs is identified by the identification unit, in a case where the division management unit is valid and the color management unit is not valid.