Control method of coating device

A control method of a coating device including a coating tank, the coating tank including a drum having a cylindrical shape and rotatable, and a disk having a dish shape and disposed to close a lower end of the drum and rotatable coaxially with the drum, wherein the method includes execution of:

• a first rotation process of setting a posture of the coating tank in a standing posture in which a rotation axis of the coating tank is directed in a vertical direction, rotating the drum in one direction, and rotating the disk in an other direction;
• a posture change process, after the first rotation process, of changing the posture of the coating tank from the standing posture to an inclined posture in which the rotation axis is inclined with respect to the vertical direction;
• and
• a second rotation process, posture change process, of rotating the drum and the disk in the one direction in a state where the posture of the coating tank has been changed to the inclined posture wherein
• a rotation direction of the disk is switched from the other direction to the one direction during execution of the posture change process, and
• a rotation of the drum in the one direction is maintained during execution of the posture change process.