SCREEN PRINTING APPARATUS HAVING PASTE CHAMBER WITH DISCHARGE OPENING AND STRUCTURE FOR INTRODUCING PASTE RESIDUE FROM PREVIOUS PRINTING INTO DISCHARGE OPENING

摘要

SCREEN PRINTING APPARATUS HAVING PASTE CHAMBER WITH DISCHARGE OPENING AND STRUCTURE FOR INTRODUCING PASTE RESIDUE FROM PREVIOUS PRINTING INTO DISCHARGE OPENING A screen printing apparatus has a housing-like main body that is long sideways. Inside the main body, there are provided a paste-receiving chamber (1); a roller (2) provided along the axis of the main body; a scraper (3) that extends forward and diagonally downward, and, in printing, whose tip slides on the upper face of a screen (8) while being in contact with the face; and a guide plate (5) that extends backward and diagonally downward so as to be opposed to the scraper, and, in printing, whose tip ends at a height where a predetermined gap (4) is maintained from the tip to the screen upper face. Paste (11) can be filled in opening holes (S') of the screen by fluid pressure of the paste discharged from a discharge opening (6) opened between the scraper and the guide plate. The filling is achieved by moving the main body forward, or in a printing direction, and rotating the roller in one direction. In each printing, a residual (11' ) of the paste adhered to the screen upper face in the preceding printing is introduced to the discharge opening (6) through the gap (4), so that the residual is mixed to the paste discharged from the discharge opening and can be used for printing.