LABEL PRINTER

PROBLEM TO BE SOLVED: To provide a label printer which does not generate a failure in printing to label paper even when a label roll with different width is attached whenever the label roll is replenished.SOLUTION: A label printer comprises: a detection section which detects positions of both ends of label paper for a width direction of the label paper perpendicular to a delivery direction of the label paper; a generation section which calculates width of the label paper on the basis of the positions of both ends and generates printing data on the basis of the calculated width of the label paper; and a control section which detects a position shift amount of the label paper in the width direction on the basis of the positions of both ends and prints the printing data to the label paper at a position obtained by shifting the label paper in the width direction by the position shift amount.