Image processing apparatus control method and image processing apparatus

An image processing apparatus control method for controlling an image processing apparatus including

• a feed tray on which a document is placed,
• an output tray that receives the document,
• a document conveying mechanism that includes a feed roller that is brought into contact with an upper surface of the document on the feed tray and a plurality of conveying roller pairs arranged along a document conveyance path and rotates the feed roller and the plurality of conveying roller pairs, thereby conveying the document from the feed tray to the output tray via the document conveyance path,
• an image sensor that scans an image from the document conveyed along the document conveyance path,
• a raising and lowering mechanism that moves the feed tray between a feed position where the upper surface of the document on the feed tray is brought into contact with the feed roller and an evacuation position lower than the feed position, and
• a fed-document detection device that detects a fed-document presence state in which the document is present on the feed tray, the image processing apparatus control method comprising:
• by a control device, performing automatic preparation control to cause the raising and lowering mechanism to perform an operation of raising the feed tray from the evacuation position in accordance with detection of the fed-document presence state by the fed-document detection device on a normal mode;
• by the control device, shifting from the normal mode to a special mode on which the automatic preparation control is not performed and causing the raising and lowering mechanism to perform an operation of holding the feed tray at a specific position lower than the feed position when a special event is detected before the document conveyance by the document conveying mechanism is started after the raising of the feed tray according to the detection of the fed-document presence state is started;
• and
• by the control device, shifting from the special mode to the normal mode when a return event is detected on the special mode.