| 摘要 |
An image forming apparatus such as, for example, a printer or a copying machine for forming an image on a sheet in accordance with video data includes a timer for measuring a length of time elapsed after a power supply has been turned on, an ejected-sheet detector for detecting an output object on a sheet ejection port, and a time output control for receiving respective signals from the timer and the ejected-sheet detector and outputting the present time onto a sheet whenever a predetermined period expires after the power supply has been turned on and when an output object is present on the sheet ejection port.
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