Patent ID: 7303633

Claim:
A spin coater for coating a solution for forming a dye recording layer of an optical disc, comprising: a spinner head for holding and rotating a substrate; an applicator for applying a coating solution to a surface of the substrate; a scatter-preventing wall for preventing the coating solution spinning off from the substrate from being scattered; a first washing device for jetting a cleaning solution onto an outer peripheral edge of the surface of the substrate in a discharge direction at an acute angle to at least one of a normal line and a straight line connecting a center of the substrate and a discharge mouth of the first washing device; a device for recovering the cleaning solution; and an exhaust device for allowing air to circulate in the spin coater; wherein: when the substrate is viewed from above, a virtual line that extends in the discharge direction is located on a rotation direction side of the straight line connecting the center of the substrate and the discharge mouth of the first washing device; the acute angle defined between the straight line and the virtual line is greater than 0° and not more than 60°; and the acute angle is defined on a side of the virtual line opposite the center of the substrate; and wherein the discharge mouth of the first washing device is arranged above the substrate inside the outer peripheral edge of the substrate when the substrate is viewed from above, and said discharge direction is in said rotation direction.