SCREEN PRINTING APPARATUS AND PASTE KNEADING METHOD

摘要

A screen printing apparatus includes a pair of clampers that clamp a substrate, a mask plate contacted to the substrate, a pair of squeegees provided above the mask plate vertically, and a squeegee controller that selectively controls one of the pair of squeegees to move in the horizontal direction in abutment against the mask plate so that the selected one of the pair of squeegees slides on the mask plate.

主权项

1. A screen printing apparatus comprising:
a pair of clam pers that clamp a substrate from sides of the substrate; a mask plate contacted to the substrate which is clamped by the pair of clam pers; a pair of squeegees provided above the mask plate in a vertical direction and arranged in a horizontal direction; and a squeegee controller that selectively controls one of the pair of squeegees to move in the horizontal direction in abutment against the mask plate so that the selected one of the pair of squeegees slides on the mask plate, wherein when paste is kneaded in a kneading area on the mask plate, the squeegee controller performs a paste kneading operation in which only one squeegee of the pair of squeegees is abutted against the mask plate within the kneading area, the paste is to scraped within the kneading area by the one squeegee, and the one squeegee is lifted up, and then only the other squeegee of the pair of squeegees is abutted against the mask plate within the kneading area, the paste is scraped within the kneading area by the other squeegee, and the other squeegee is lifted up.