Patent ID: 8724129

Claim:
An image forming apparatus comprising: an image forming main device to which at least one optional device is connectable, the image forming main device including: an image forming section, a display device, an input device, a communication device for communicating with an external device, and a control section, the control section being configured to (a) obtain option information and eco-information from the external device via the communication device, the option information being indicative of the at least one optional device and the eco-information being indicative of an amount of greenhouse-gas which is to be emitted and/or has been emitted due to the at least one optional device, (b) control the display device to display the option information and the eco-information, and (c) send, to the external device or another external device via the communication device, an order for an optional device which has been selected by a user via the input device out of the at least one optional device indicated by the option information and the eco-information that is indicative of an amount of greenhouse-gas which is to be emitted and/or has been emitted due to the at least one optional device that is displayed on the display device.