IMAGE FORMATION SYSTEM, IMAGE FORMATION DEVICE, AND METHOD OF BILLING CALCULATION

摘要

An image formation device includes: a job execution control part for controlling execution of a job; a storage part for storing therein a billing map to be used for billing calculation in response to execution of the job; a billing calculation part for performing billing calculation by referring to the billing map stored in the storage part, the billing calculation being performed in response to execution of the job by the job execution control part; and a billing map switching part for changing a billing map to be referred to by the billing calculation part when the progress of the job executed by the job execution control part satisfies a predetermined condition. So, the substance of billing calculation can be changed when the progress of a job satisfies the predetermined condition during execution of the job.