An image forming device is provided that is capable of easily preventing occurrence of stripe-like image noise that may be caused by intimate contact between a contact electrifying member and an image carrier even when an image forming operation is stopped for a while. The system and method may use a demand response model to select one or more factors for the demand response, such as selecting a subset of customers for demand response from a larger pool of available demand response customers. Such a receiver may be integrated into a smaller package and consume less power at a reduced cost. The absorptive material may be formed directly on the light emitting device or may be formed on or integrated with a spacer. Therefore, users can attach the detachable communication and music module to the frame assembly, such that the users can receive phone calls or enjoy music when wearing the eyeglass.