Glass ribbon manufacturing apparatus and method for manufacturing glass ribbon

A method of manufacturing a glass ribbon, the method comprising the steps of:

• annealing a formed glass ribbon to remove an internal strain thereof;
• and
• cooling the glass ribbon being annealed to a vicinity of a room temperature,
• wherein a plurality of support rollers are configured to support both sides of the glass ribbon in a width direction during the annealing and the cooling and are provided along a direction of downward movement of the glass ribbon during the annealing and the cooling,
• wherein at least one of the plurality of the support rollers comprises a shape stabilization roller configured to stabilize a shape of the glass ribbon curved in the width direction,
• wherein the shape stabilization roller comprises:
• a first roller being arranged on one surface side of the glass ribbon and having a pair of supporting portions configured to support only end portions of the glass ribbon at both of the sides of the glass ribbon in the width direction;
• and
• a second roller being arranged on another surface side of the glass ribbon and having a pair of supporting portions configured to support only the end portions of the glass ribbon at both of the sides of the glass ribbon in the width direction, and
• wherein an inner end portion of each of the pair of the support portions of the first roller in the width direction is arranged on an outer side, in the width direction, of an outer end portion of a corresponding one of the pair of the support portions of the second roller in the width direction, and
• wherein a distance between the pair of support portions of the first roller and the pair of support portions of the second roller of the shape stabilization roller in a thickness direction of the glass ribbon is positive.