Method for coating doughnut-type glass substrates

摘要

A method for coating doughnut-type glass substrates, which comprises laminating a plurality of doughnut-type glass substrates each having a circular hole at its center so that the circular holes form a cylindrical hole, and supplying a coating liquid to an inner peripheral surface of the cylindrical hole in a state where the glass substrates are laminated to coat inner peripheral edge surfaces of the plurality of the doughnut-type glass substrates with the coating liquid.