| 摘要 |
<p>PURPOSE:To prevent the overlap of sheet feed from a sheet feeding cassette and sheet feed from a manual insertion sheet feeding part. CONSTITUTION:The image forming device main body 1 is provided with a sheet feed cassette and a manual insertion sheet feeding port 10. The manual insertion sheet feeding port 10 is provided with a door 12 so that it can be opened and closed. A door lock device 15 which locks and unlocks the door 12 is further provided. The door 12 is locked by means of a sheet feed start signal from the sheet feed cassette or the depression of a copy button, so that the insertion of a sheet of recording paper into the manual insertion sheet feeding part 10 is prevented. The door 12 is unlocked by means of a sheet ejection end signal or a register passage signal.</p> |
