An image forming apparatus of the present invention is an image forming apparatus into which a memory device is insertable and which performs a printing process on an image of image data stored in the memory device. The image forming apparatus includes a memory reading section for detecting insertion of the memory device into the image forming apparatus, and a display processing section for performing a notification process of warning of accidental ingestion of the memory device, when the memory reading section detects the insertion of the memory device. This makes it more surely possible to cause a user to give attention to accidental ingestion by young children.