SCREEN PRINTING MACHINE

摘要

PROBLEM TO BE SOLVED: To provide a screen printing machine which prevents a printing failure by decreasing pressure irregularity of a paste. SOLUTION: In a screen printing machine which prints a scream solder on substrate by sliding a closed type squeegee head which reserves cream solder over a mask plate, an aperture diameter or alignment pitch of openings 34a is set such that an aperture ratio R (a ratio of a size A in the sliding direction of paste printing surface against opening part of an aperture part) of an aperture part 34 where the openings 34a arranged in a passage covering from a cartridge to the top face of the mask plate through which a compressed cream solder passes are formed in lines is set to a prescribed value greater than zero. Herewith, pressure irregularities under the aperture part 34 are decreased.