Printer and power controlling method therefor

摘要: A printer and a power controlling method therefor are disclosed. The disclosed has print engine for printing toner image on sheet of paper; supply unit supplying power; controller the from with corresponding to any one mode selected modes different levels, including ready-to-print in which is supplied so that can be ready printing, saving level set below mode, off cut off; controls setting an received data printed paper. when not outside first period time changed into second mode. With printer, consumption reduced state used long time.