Based on characteristics of the font type, the results of printing by a previous printer and the results of printing by a replacement printer are made the same or nearly the same. The control unit 15 of the printer 10 receives control data including font type information specifying a font type, and character identification information specifying a character or string. When the font type specified by the font type information is a specific type of font, the control unit 15 adjusts the size of the font data of the character specified by the character identification information based on an adjustment value read from adjustment information data KY stored by a storage unit 16, and controls a print unit 17 to print the character based on the adjusted font data.