Screen printing apparatus

A screen printing apparatus for pattern forming of a printing paste on a screen printing plate onto a substrate to be printed by moving a squeegee in a predetermined direction, comprising:

• a bag-like container in which the printing paste is charged;
• a mechanism for receiving the bag-like container and pressurizing the bag-like container;
• a printing paste supply plate provided with a printing paste supply port;
• and
• an elastic squeegee in which a back surface is formed at a fixed angle corresponding to an angle at a time of printing and a front surface is integrally formed with a hard thin plate,
• wherein the mechanism for pressurizing said bag-like container is connected to the back surface side of said printing paste supply plate, the back surface of said squeegee is brought into contact with the printing paste supply port in the front surface side of said printing paste supply plate, and the screen printing apparatus is provided with a the printing paste port supply mechanism capable of being opened and closed through a vertical movement so on the elastic squeegee as to supply a predetermined amount of printing paste, and a scraper for scraping up the printing paste on the screen printing plate.