The present invention provides a thermal recording material comprising a support and at least a thermal recording layer disposed on the support, wherein at least one of the thermal recording layer includes, together with an electron donating colorless dye, at least an electron accepting compound represented by the following general formula. The second storage location is identified when new data is stored to the first storage location where data prepared at the first operation stage among multiple stages for manufacture of a product is stored. Each of a pair of coupling members pivotally couples free ends of the pair of legs to the first frame portion at junctures of the rear member and the pair of side members.