In a communicating apparatus which accommodates a plurality of channels, a message from a sender can be recorded even if a transfer station is busy or is located at a place where a radio wave does not reach. The middle layer outputs light having a relatively narrow emission angle distribution as an output signal to an output layer if the signal level of the output signal from input layer is relatively high and outputs light having a relatively broad emission angle distribution to the output layer as an output signal if the signal level of the output signal from the input layer is relatively low. The electronic device includes a first casing, a hinge, and a second casing rotatable relative to the first casing via the hinge. The invention also relates to colored solid chips comprising a coagulated or aggregated mixture comprising a polymeric resin and an amount of one or more pigments sufficient to obtain a desired single- or multi-colored appearance. Depending on the comparison and a number of completed erase cycles, the transient document enters an additional erase cycle, completes as sufficiently erased, or is rejected as not sufficiently erased. The thermal imaging beacon includes a heat source, a power source, and an activation switch in communication with the heat source and power source and adapted to allow power to flow to the heat source when the switch is triggered by a fire event signal.