| 摘要 |
<p>PURPOSE: An image forming device, a host device, an image forming system including thereof, and a power controlling method are provided to selectively execute the power source automatic blocking function by a user selection, thereby solving the inconvenience of the user. CONSTITUTION: An image forming device (100) performs the image forming job and counts the idle time. A host device (200) is connected to the image forming device. If the idle time reaches to the threshold time, the image forming device transmits an alarm screen display command to the host device. When the alarm screen display command is received, the host device displays an alarming screen. If a turn-on time extension menu is selected on the alarming screen, a control unit transmits a turn-on time extension command to the image forming device. The image forming device resets a timer unit and recounts the idle time. [Reference numerals] (150) Interface unit; (200) Host device</p> |
