| 摘要 |
PURPOSE:To eliminate defective adhesion of solder cream by operating a squeegee alternately in two directions crossing each other thereby bonding the squeegee firmly to a solder mask board. CONSTITUTION:When solder cream 9 printing is carried out after part 6 is mounted on a printed circuit board 8 in preceeding process, a squeegee 1a is moved in X-direction 2a then a squeegee 1b is moved in Y-direction 2b. Since the solder cream 9 is fed sufficiently to solder printing points around the part 6 mounted in preceeding process, the solder cream 9 can be printed correctly at all printing positions. Even when there is a protrusion on a mask board, the solder cream 9 can be fed closely to the protrusion 5 and thereby defective adhesion of the solder cream 9 to a conductor patter 4 due to insufficient contact of the squeegee can be eliminated. |
