Abstract:
A screen printer includes: a mask; a paste supply apparatus which supplies paste to the mask contacting a board; and a squeegee. The paste supply apparatus includes: a paste pot which is a disposable and consumable part, and which includes a bottomed cylindrical member which stores the paste, and an inner lid movably inserted into the cylindrical member and having a through hole formed in a center portion of the inner lid; a pot holding portion which holds the paste pot in a posture in which the through hole faces downward; and a paste extruding portion which moves the cylindrical member relative to the inner lid of the paste pot held by the pot holding portion and extrudes the paste from the through hole. The paste pot is disposed of after the paste is used up.