It is to provide a cathode active material powder for a positive electrode for a lithium secondary battery, which has a large volume capacity density, high safety and excellent durability for charge and discharge cycles. This fluoroalkyl alcohol mixture is produced by the reaction of a fluoroalkyl iodide represented by the general formula: CF3nabcI II, with N-methylformamide, followed by hydrolysis in the presence of a basic compound. Rear support wheels are located beneath the rear section and are supported by a second swing arm assembly. A plurality of gaps 73 in each of the plurality of mask layers 70 overlap each other to form a plurality of through gaps 73a that linearly extend through all of the plurality of mask layers 70.