Screen printing apparatus including scraper with curved portion having opening

A printing apparatus comprising:

• a screen having a screen surface which has a width direction and which is to be placed on a workpiece;
• a scraper to be movable along the screen surface in a first direction perpendicular to the width direction so as to coat the screen surface with a paste, the scraper comprising:
• an upper portion extending from an upper end to a lower end of the upper portion toward the screen surface in a direction perpendicular to the screen surface;
• and
• a curved portion connected to the lower end of the upper portion and extending in the width direction, the curved portion having a curved shape projecting toward a second direction opposite to the first direction viewed in the width direction, the curved portion having an opening extending in the width direction, the opening formed by a through-hole that extends through the curved portion in the first direction;
• and
• a squeegee to be movable along the screen surface so as to transfer to the workpiece the paste with which the screen has been coated by the scraper.

A printing apparatus comprising:

• a screen;
• a scraper configured to coat the screen with a paste by moving on the screen;
• and
• a squeegee configured to transfers the paste, which coats the screen, to a workpiece by moving on the screen,
• wherein the scraper includes
• a vertical portion that extends toward the screen in a vertical direction, and
• a curved portion that extends from a lower end of the vertical portion in a direction opposite to a moving direction in which the scraper is configured to move to coat the screen with the paste, the curved portion including a pair of side wall surfaces that each extend from the lower end of the vertical portion, and
• wherein the curved portion has an opening that extends in a horizontal width direction that crosses the moving direction, the opening being disposed between the side wall surfaces in the horizontal width direction.