A tank body 100 includes a liquid receiving part 2 for receiving processing solution Q applied to a plate-like work 10 and a liquid retaining part 4 for retaining liquids to be applied to the plate-like work 10 and a liquid outflowing part 6 for causing a flow of the processing solution Q which is spilled out of the liquid retaining part 4 and traveled down toward the plate-like work 10, wherein a tip 6a of the liquid outflowing part 6 is projected from a connecting part 5 connecting to the liquid retaining part 4 (or the liquid receiving part 2).