One or more among a PC document receive filter, a FAX document receive filter, a read filter, and a readout filter create a report on each of the corresponding functions in a format common to the functions. A report filter changes a format of the created report as desired by the user. Therefore, when a setting for a report output process is changed, it is not necessary to change the setting with respect to each of the functions. Thus, it is possible to reduce development man-hours for the report output process.