Screen printer having paste feed syringe swayable into paste feed position and storage position

A screen printer, comprising:

• a mask plate which is brought into contact with an upper surface of a substrate and on which a mask pattern conforming to a layout of electrodes on the substrate is formed;
• a squeegee that is attached to a squeegee base which reciprocally travels over an area above the mask plate in a horizontal direction, that moves in the horizontal direction along with the squeegee base while remaining in contact with the mask plate from above, and that makes sliding movement over the mask plate, thereby filling pattern holes of the mask pattern with paste raked on the mask plate;
• a paste feed syringe that is attached to the squeegee base so as to be swayable around an axial line having an imaginary line extending from the squeegee base within a vertical plane that is vertical to the mask plate and parallel to the direction of reciprocal movement of the squeegee base, the axial line of the paste feed syringe is downwardly extending from the squeegee base at an oblique angle with respect to a horizontal line that is parallel to the mask plate within the vertical plane, the paste feed syringe being configured to change its position between a paste feed attitude in which the paste feed syringe is extended within the vertical plane such that a nozzle provided at a lower end of the paste feed syringe comes to a position below the squeegee and a storage attitude in which the paste feed syringe is turned from the paste feed attitude around the axial line;
• and
• a syringe attitude switching unit that sways the paste feed syringe between the paste feed attitude and the storage attitude.