Disclosed herein is an ink comprising. The system includes an access terminal for transmitting an NAI to a packet data serving node of the visited network and an AAA of the home network, for transmitting subscriber profile information of the access terminal to the visited network. In addition, the handle is mounted on and detached from the pot body or the lid easily and quickly by moving the control knob, thereby facilitating the user carrying the pot body or the lid. The gas purifying filter is located adjacent to the thermal radiation mechanism so as to be heatable by heat from the radiation mechanism. The processors, when in the minimally operational state, request the code image from the network. The step-down circuit may output a step-down potential after the potential is adjusted by a second regulator.