A first etching stop layer and an active layer are formed on an inner surface of a first glass substrate, and a second etching stop layer and a cover layer are formed on an inner surface of a second glass substrate. The outer surface of the exterior material of the battery and the outer surface of the battery pack are each provided with a light emitting material which, when irradiated with invisible light, emits visible light. 1 to about 25 weight % of an ethylene acrylate ester copolymer composition, a grafted polyolefin composition or a combination thereof, the method comprising mixing the solid blend composition with water heated to a temperature from about 80 to about 100\xb0 C. A firmware download device is provided in the central supervisory apparatus to remotely download prescribed updated firmware to an applicable one or more image forming apparatuses in accordance with updated hardware thereof. Each NRD is owned by a corresponding routing device according to an ownership algorithm.