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 relatively to the other one, the method comprising:
- a region detection step of 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 of controlling a printing speed when the non-printing region faces the printing head to be higher than a printing speed when the other printing region which is a region other than the non-printing region faces the printing head,
- wherein the printing speed control step performs an acceleration and deceleration control at least at a part while the non-printing region faces the printing head and performs a constant speed control while the other printing region faces the printing head.