| 摘要 |
PURPOSE:To prevent jamming and the omission of transfer from occurring and to improve the productivity of image forming by stopping feeding of new recording materials supplied from a housing means detecting that an original is a final one. CONSTITUTION:A sensor 119 for detecting whether the original on a tray is the final original or not is provided on the tray 101. The sensor 119 is situated at a position corresponding to the aperture part 101a of the tray 101 and it consists of a light emitting sensor 119a and a light receiving sensor 119b. Then, it is fixed to the tray 101 through a holder 120. Besides, the position of the sensor 119 in an original feeding direction is set within a range that the sensor 119 detects the original when the final original is situated at the position before it is separated and the sensor 119 is removed from the trailing edge of the original when the original is separated and it waits by making the leading edge thereof abut on a carrying roller 108 and making a loop. Thus, the supply of a recording medium is surely controlled and the jamming or the like is prevented from occurring. |
