A method and apparatus for efficient handling of product returns to reduce associated costs. In one embodiment, the capacitor includes a polymer electrolyte in which a polymer thin film is cast from the base polymer and impregnated with the electrolyte solution, which contains a salt for ionic conduction. A transmission unit transmits both the image data in the first data format and the image data in the second data format that is generated by converting the image data in the first data format by the conversion unit to another image processing apparatus connected via a network, when shifting to a power saving mode. This results in a typical napa structure with a natural pebbled grain. If, during the waiting time, the mobile communication network detects a need for transmission of packets in the second direction from the mobile communication network to the mobile communication device, at least one packet data traffic channel is set up for data transmission in said second direction.