| 摘要 |
PURPOSE:To enable printing high in thickness accuracy and the formation of a through-hole with high reliability, by providing a third or fourth squeezee or scraper holder. CONSTITUTION:A second scraper 9 is added to the constitution of conventional printer having a screen 6, a squeezee 7 and a first scraper 8. In printing, the leading ends of the squeezee 7, the first scraper 8 and the scraper 9 are moved so as to draw rectangular loci. A solid line shows the locus and the moving direction of the leading end of the squeezee and a broken line shows the locus of the leading end of the first scraper while an one-dot broken line 12 shows the locus of the leading end of the second scraper 9. At the point of time when first printing is finished, respective leading ends are positioned at points 13a-15a and three leading ends subsequently advance together. At a certain definite position, the squeezee is lowered and the second scraper 9 is raised and perform printing while advance only over certain defined amounts. By successively performing thus movement, the amount of ink 16 pushed in by the squeezee becomes almost unchangeable even in the squeezee central part and even in the vicinity of both ends. Furthermore, even if the ink on the screen becomes much or small, the amount present in front of the squeezee is kept constant. |
