1. An image-printing device comprising: a reading unit configured to read a sample image and an original image; a sample characteristic amount extracting unit configured to categorize all pixels of the sample image into respective sample segments based on respective hue ranges, and calculate a sample characteristic amount for each of the respective sample segments; an original characteristic amount extracting unit configured to categorize all pixels of the original image into respective original segments-corresponding to the respective hue ranges of the respective sample segments, and calculate an original characteristic amount for each of the respective original segments; an image converting unit configured to convert pixels of a selected original segment of the respective original segments based on both the sample characteristic amount of a sample segment corresponding to the selected original segment and the original characteristic amount of the selected original segment; and a printing unit configured to print the converted original image.