Imaging Data means printing of a game symbol, a retailer confirmation number, and a ticket verification number that are printed below scratch. Before printing the game data, a layout file for setting on which location a symbol is printed for each ticket type is input, and it is set in printing whether which game data is printed for each header. If a printing margin is too much extended due to lengthening of printing paper or movement of a paper location, a printing process may stop to adjust a focus for printing. Since a printing margin and a display for storing the order of data were on the same screen in some printing facilities in the past, the order of game data might be changed due to carelessness of an operator.

In order to prevent this accident, education of operators, change of an original setting function of a printing facility, setting of a previous error verification function, and verification of log records are needed in advance. If there was a stop or change of a process by checking log records after printing, it is confirmed by extracting tickets printed in that time whether printed game data is identical to a prize structure.