There are a reproduction method and a reconcile method among ticket production methods. The reproduction method is a method of printing numbers of nonconforming tickets again by designing award grades of initial game data to be the same as award grades to be issued and is mainly used for printing currency or draw-type lottery tickets. Since high prize tickets may be exposed if the reproduction method is used for instant tickets, the instant tickets are usually printed in the reconcile method. In the printing of the reconcile method, data of high prize tickets is additionally printed by considering the occurrence of nonconforming tickets, and the additionally printed high prize tickets are removed before packaging with conforming tickets after the nonconforming tickets are removed. Herein, an additionally printed high prize ticket is called a remove ticket, and only if such remove tickets are clearly removed, a prize structure of issued tickets can be correctly known.