| 摘要 |
PURPOSE: To facilitate the operation of an image forming device for forming a small quantity of copies of an image of a different size from a paper sheet size in a supply sheet cassette for automatic sheet supply without requiring a user to change the supply sheet cassette. CONSTITUTION: When a document size designated by document size detection data is different from a paper sheet size detected by a sheet size detection means of an automatic sheet supply means, a sheet supply means including a manual insertion supply sheet tray 5, a side fence 18 provided on the manual insertion supply sheet tray 5, and a size display part for a manually inserted supply sheet is automatically set into an actuation condition, and a manual insertion supply sheet port is automatically opened. |
