Printing apparatus and method of controlling printing apparatus

A printing apparatus, comprising:

• a printing unit configured to perform printing on a printing medium;
• a transporting belt configured to transport the printing medium, the transporting belt having an endless shape;
• and
• a roller configured to circulate the transporting belt, the roller having a cylindrical shape, wherein
• a magnetic scale is arranged at the transporting belt along a transport direction of the printing medium, the magnetic scale having a magnetic pole changing at a predetermined pitch,
• the roller has an outer circumferential surface constituted of a magnetic body, and is in contact with the transporting belt at the outer circumferential surface, and
• P=p·q (1)
• when the pitch of the magnetic scale is P, wherein p is a positive integer, and q is an approximate value of n.

A method of controlling a printing apparatus, the printing apparatus comprising:

• a printing unit configured to perform printing on a printing medium;
• a transporting belt configured to transport the printing medium, the transporting belt having an endless shape;
• and
• a roller having a cylindrical shape and including an outer circumferential surface constituted of a magnetic body, and the roller being in contact with the transporting belt at the outer circumferential surface for circulating the transporting belt,
• the printing apparatus having a configuration in which a magnetic scale is arranged at the transporting belt along a transport direction of the printing medium, the magnetic scale having a magnetic pole changing at a predetermined pitch, wherein
• when the transporting belt is stopped, a position adjustment operation for adjusting relative positions of the outer circumferential surface of the roller and the transporting belt is executed, and then the transporting belt is stopped.