An orange toner for developing electrostatic charge images includes a binder resin; and a colorant including a first color material and a second color material; wherein the first color material has a hue angle of \u221220\xb0 to 80\xb0 in a L*a*b* color system, the second color material includes C. A standard ATM cell assembler 1 converts various forms of input information into short cells, places the short cells in standard ATM cells efficiently considering their information length, and output them to a BISDN network 7. When two carriers are configured with multiple-input and multiple-output, Hybrid Automatic Repeat reQuest-ACKnowledgement signals of the two carriers are combined into a joint feedback signal. The color resolution contraction unit reduces a color resolution of the second video data to generate output video data, a color resolution of the output video data being the same as the color resolution of the input video data.