Image forming apparatus

An image forming apparatus comprising:

• a paper feeder that feeds at least one paper for image formation;
• an image forming device that forms an image on the at least one paper based on image data when accepting a print command of the image data from a user;
• a display that shows a predetermined message for the user;
• and
• a controller that controls the paper feeder, the image forming device, and the display, wherein
• the paper feeder includes:
• a paper feed tray that is openable and closable, and that stores the at least one paper,
• a lifting drive device that lifts a lift plate loaded with the at least one paper, and
• an opening and closing detector that detects an open or closed state of the paper feed tray,
• when determining that an abnormality, that an upper surface of an end of the at least one paper does not reach a paper-feedable position within a predetermined time after the at least one paper starts being lifted up by the lifting drive device, occurs to the paper feed tray in a case that the paper feeder is in a paper-feeding state for the image forming device to form the image, the controller determines that the abnormality is caused by a failure of the paper feeder, and executes a predetermined first abnormality processing,
• when determining that the abnormality occurs to the paper feed tray in a case that the opening and closing detector detects that the paper feed tray is brought into the closed state from the open state, the controller determines that the abnormality is caused by a storage failure of the at least one paper stored in the paper feed tray, and executes a predetermined second abnormality processing,
• as part of the first abnormality processing, the controller causes the display to show a message indicating that the paper feed tray has to be repaired,
• as part of the second abnormality processing, the controller causes the display to show a message indicating that a storage state of the at least one paper stored in the paper feed tray has to be checked, and
• a display of the message related to the first abnormality processing is prioritized over a display of the message related to the second abnormality processing.