A printing apparatus that conveys a printing medium placed on a surface of a conveyor belt, and performs printing to the printing medium by ejecting a liquid from a liquid ejection head, the apparatus includes: a magnetic recording layer that is formed to the conveyor belt as a continuous strip; a magnetic reproduction head that is disposed opposing the magnetic recording layer of the conveyor belt; and a control unit that detects recording details reproduced from the magnetic recording layer by the magnetic reproduction head. In the printing apparatus, the magnetic recording layer is recorded with the recording details about a magnetic pole change of a predetermined pattern, and is partially recorded with the recording details about a magnetic pole change different from the change of the predetermined pattern, and the control unit detects a movement status of the conveyor belt from any of the recording details reproduced from the magnetic recording layer by the magnetic reproduction head specifically about the magnetic pole change of the predetermined pattern, and detects a reference position of the conveyor belt therefrom specifically about the magnetic pole change different from the change of the predetermined pattern.