An image forming apparatus includes a table storing unit that stores a first color Look Up Table; a table extracting unit that extracts the first color Look Up Table stored in the table storing unit; a table download unit that downloads a second color Look Up Table from an external storage medium; a table backup unit that stores the first color Look Up Table extracted by the table extracting unit in the external storage medium when the table download unit downloads the second color Look Up Table; and an image process unit that performs an image process based on the second color Look Up Table.