A printing speed control method of a printing apparatus that performs printing by moving at least one of a printing medium and a printing head relative to the other, the method comprising:
- a region detection step comprising analyzing printing data and detecting a non-printing region, which is a region that does not become a target of a printing operation by the printing head;
- and
- a printing speed control step comprising controlling a printing speed when the non-printing region faces the printing head to be higher than a printing speed when a printing region, which is a region that becomes a target of a printing operation, faces the printing head,
- wherein the printing speed control step controls the at least one of the printing medium and the printing head to maintain a constant relative speed at all times during which the printing region faces the printing head.