Liquid dispenser including curved vent

A liquid dispenser comprising:

• a liquid supply channel;
• a liquid return channel;
• a liquid dispensing channel including a wall, the wall including a surface, a portion of the wall defining an outlet opening;
• a drain open to the atmosphere located in the wall downstream from the outlet opening, the drain having an edge that includes a radius of curvature as viewed from a direction perpendicular to the wall;
• a liquid supply that provides liquid at a regulated pressure that continuously flows from the liquid supply channel through the liquid dispensing channel to the liquid return channel;
• and
• a diverter member that selectively diverts a portion of the continuously flowing liquid through the outlet opening of the liquid dispensing channel.