This image forming device is provided with: an image reading unit; a control unit which generates distribution data indicating the distribution of an angle of inclination of documents (D) read during a pre-determined time period, performs a test to determine whether there is a significant difference between the distribution data and standard distribution data, and on the basis of the test result determines whether maintenance of the image forming device is required; and a communication unit which, if it has been determined that maintenance is required, transmits a maintenance request notification to a service system.