A controller may include first and second input operating sections to input an instruction, and a control unit to control selection of an object on a screen display based on an instruction input at the first and second input operating sections. Hence, rise in coolant temperature on the upstream side can be suppressed, and the first and second semiconductor chips disposed upstream and downstream can be effectively cooled. An intermediate weight is measured at a pre-determined point in the slicing process. The extraction unit may be configured to extract recovery feature from the received digital image using quad-tree decomposition. The treatment device cools the bare optical fiber as it cools to a temperature range of at least 1,600\xb0 C.