A printing system comprising: characteristic-parameter-acquisition-chart output means (62, 24) for outputting a characteristic parameter acquisition chart including a pattern for acquiring characteristic parameters related to characteristics of a printing system; image reading means for reading the characteristic parameter acquisition chart output by the characteristic-parameter-acquisition-chart output means; characteristic parameter acquisition means for acquiring the characteristic parameters by analyzing a read image of the characteristic parameter acquisition chart acquired by the image reading means; halftone process generation means for generating halftone processing rules that define halftone processes used in the printing system based on the characteristic parameter acquired by the characteristic parameter acquisition means; and an image forming unit that includes a plurality of printing elements serving to form dots on a printing medium, wherein: the characteristics of the printing system are characteristics that include at least one of individual recording characteristics of the plurality of printing elements and common characteristics to the plurality of printing elements, the characteristic parameter acquisition means acquires parameters related to at least one of the individual recording characteristics of the printing element and the common characteristics to the plurality of printing elements from the read image of the characteristic parameter acquisition chart on which recording is performed multiple times by using the same printing elements by the characteristic-parameter-acquisition-chart output means, and the characteristic parameter acquisition means acquires a parameter related to characteristic errors as errors of the printing system having reproducibility from an average value of measurement values acquired from the read image, and acquires a parameter related to random system errors as irregularly changed errors of the printing system from a variation in the average value of measurement values acquired from the read image. characteristic-parameter-acquisition-chart output means (62, 24) for outputting a characteristic parameter acquisition chart including a pattern for acquiring characteristic parameters related to characteristics of a printing system; image reading means for reading the characteristic parameter acquisition chart output by the characteristic-parameter-acquisition-chart output means; characteristic parameter acquisition means for acquiring the characteristic parameters by analyzing a read image of the characteristic parameter acquisition chart acquired by the image reading means; halftone process generation means for generating halftone processing rules that define halftone processes used in the printing system based on the characteristic parameter acquired by the characteristic parameter acquisition means; and an image forming unit that includes a plurality of printing elements serving to form dots on a printing medium, wherein: the characteristics of the printing system are characteristics that include at least one of individual recording characteristics of the plurality of printing elements and common characteristics to the plurality of printing elements, the characteristic parameter acquisition means acquires parameters related to at least one of the individual recording characteristics of the printing element and the common characteristics to the plurality of printing elements from the read image of the characteristic parameter acquisition chart on which recording is performed multiple times by using the same printing elements by the characteristic-parameter-acquisition-chart output means, and the characteristic parameter acquisition means acquires a parameter related to characteristic errors as errors of the printing system having reproducibility from an average value of measurement values acquired from the read image, and acquires a parameter related to random system errors as irregularly changed errors of the printing system from a variation in the average value of measurement values acquired from the read image. the characteristics of the printing system are characteristics that include at least one of individual recording characteristics of the plurality of printing elements and common characteristics to the plurality of printing elements, the characteristic parameter acquisition means acquires parameters related to at least one of the individual recording characteristics of the printing element and the common characteristics to the plurality of printing elements from the read image of the characteristic parameter acquisition chart on which recording is performed multiple times by using the same printing elements by the characteristic-parameter-acquisition-chart output means, and the characteristic parameter acquisition means acquires a parameter related to characteristic errors as errors of the printing system having reproducibility from an average value of measurement values acquired from the read image, and acquires a parameter related to random system errors as irregularly changed errors of the printing system from a variation in the average value of measurement values acquired from the read image.