| 摘要 |
PROBLEM TO BE SOLVED: To improve a method of measuring the residual amount of solder paste on a screen mask.SOLUTION: A transparent window 41 through which solder paste on a screen mask 26 can be seen from below is formed at a prescribed position of the screen mask 26, the transparent window 41 is imaged from below with a camera 34 in the state where a squeegee 27 is moved along the screen mask 26 and stopped immediately in front of the transparent window 41, the transparent window 41 and the solder paste existing area in the transparent window 41 are recognized by processing the image, the area ratio of the solder paste existing area in the transparent window 41 or the ratio of the width in the squeegee movement direction to the transparent window 41 for measuring the residual amount of the solder paste is measured on the basis of the recognition result, and the residual amount of the solder paste on the screen mask 26 is measured from the measurement value.SELECTED DRAWING: Figure 4 |
