| 摘要 |
An image forming apparatus having a device for forming an image on a copy sheet, an input device for designating a due data, a device for storing the due date designated through the input device and a mechanism for inhibiting an operation of the image forming device after a lapse of the designated due date stored in the storing device. The apparatus, when rented, enables a rental firm to supervise the rented apparatus by preventing an unauthorized or overdue use thereof through a service person who is to regularly visit the user and check the apparatus.
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