This is disclosed a printer comprising a feeder, a printing head, a take-up body, and a print control portion. The feeder feeds a recording medium. The printing head forms desired print in a predetermined print area of the recording medium fed by the feeder. The take-up body sequentially takes up the recording medium on an outer circumference part with a tip end region of the recording medium positioned on downstream side in a transport direction than the print area connected to the outer circumference part and produces a roll-shaped printed matter. The print control portion controls the printing head so as to form a print part for preheating the printing head in a position that serves as a border between the tip end region and the print area of the recording medium.