| 摘要 |
Provided are a method for manufacturing a glass substrate, and the like, the method being capable of preventing end portions of sheet glass from separating and preventing shrinkage in a width direction of the sheet glass. The present invention is a method for manufacturing a glass substrate by overflowing molten glass from a molded body by a down-draw method and molding sheet glass. The sheet glass has a widthwise central region sandwiched between end portions in the width direction, and a pair of rollers are provided so as to be in contact with the end portions in a position opposing the end portions having a thickness greater than the plate thickness of the widthwise central region. A first cooling speed for cooling the end portions upstream of the pair of rollers from a lower end of the molded body is slower than a second cooling speed for cooling the end portions downstream of the pair of rollers in a temperature region in which the temperature of the widthwise central region is at an annealing point or higher. |
