A printing system includes a supply device and a tape printing device. The supply device includes a widthwise-size setting unit that sets the size of a print table image in the tape-width direction based on the tape width notified by the printing device, a table structure input unit that inputs the number of rows and columns of a table, a reference table creating unit that creates reference table borders based on the set size of the print table image in the tape-width direction and the input number of rows and columns, and a print table image data editing unit that edits the print table image data by editing a plurality of reference horizontal borders and reference vertical borders of the reference table borders.