Image forming device transitioning to sleep state or off-mode state from standby state

An image forming device comprising:

• a user interface;
• a communication interface;
• a memory;
• and
• a controller configured to perform:
• transitioning the image forming device to a sleep state from a standby state under a condition that a first duration elapses with the image forming device maintained in the standby state since a start of the standby state, the sleep state being a state in which the image forming device consumes less power than in the standby state;
• transitioning the image forming device to an off-mode state from the standby state under a condition that a second duration elapses with the image forming device maintained in the standby state since the start of the standby state, the off-mode state being a state in which the image forming device consumes less power than in the sleep state;
• and
• individually setting the first duration and the second duration by storing the first duration and the second duration in the memory, each of the first duration and the second duration being inputted via the user interface or the communication interface,
• wherein the controller performs the transitioning the image forming device to the sleep state from the standby state even when the image forming device has established communications with an external device, and
• wherein the controller does not perform the transitioning the image forming device to the off-mode state from the standby state when the image forming device has established communications with the external device.

An image forming device comprising:

• a user interface;
• a communication interface;
• a memory;
• and
• a controller configured to perform:
• transitioning the image forming device to a sleep state from a standby state under a condition that a first duration elapses with the image forming device maintained in the standby state since a start of the standby state, the sleep state being a state in which the image forming device consumes less power than in the standby state;
• transitioning the image forming device to an off-mode state from the standby state under a condition that a second duration elapses with the image forming device maintained in the standby state since the start of the standby state, the off-mode state being a state in which the image forming device consumes less power than in the sleep state;
• and
• individually setting the first duration and the second duration by storing the first duration and the second duration in the memory, each of the first duration and the second duration being inputted via the user interface or the communication interface,
• wherein in a case where a time-length value is inputted for the second duration via the user interface, the individually setting sets the inputted time-length value as the second duration even when the inputted time-length value is greater than a first reference value, and
• wherein in a case where a time-length value is inputted for the second duration via the communication interface, the individually setting sets the inputted time-length value as the second duration only when the inputted time-length value is less than the first reference value.