What is the appearance of ink lines and intermittent lines?
What is the appearance of ink lines and intermittent lines? This article explains the phenomenon, causes and solutions. phenomenon: Presented on the printed product line, commonly known as "take the ink", it was the beginning of filamentous, and gradually become the ribbon, slowly reduced to micro filaments, disappeared from the forum, no start and finish lines, as The blade moves to the left and right, and the length is generally within 2m. They are intermittent and appear only a few meters or hundreds of meters apart. In general, a layout with a distinct longitudinal patch is likely to occur near a blank portion within 1-50 px of the pattern. the reason: Since the wear part of the scraper is mainly concentrated on the dot portion, the scraped blade portion is swung to the blank portion under the stringing of the scraper, and a weak link is formed in the blank portion, and the scraper cannot be closely attached to the plate. The combination creates conditions for the passage of the ink body to form thin lines. However, when the ink fluid passes, there is a raised hydraulic pressure on the scraper, and a strip line is formed at this time, and a thin line is formed when the scraper rebounds. solution: As can be seen from the above, the main reason is that the scraper does not scrape the ink clean. The main reason for this phenomenon is the uneven wear of the scraper, so it is mainly handled in three aspects: 1. When the viscosity and solubility of the ink are adjusted correctly, use the fine sand (800#) to wipe the layout of the thick line, so that the scraper can easily scrape the ink, which can alleviate the frequency of occurrence. 2. For the new or de-plated version, consider whether there are burrs on the edge of the layout dot, resulting in excessive and excessive wear of the blade, and checking the plate with a magnifying glass. 3, tool change and plate change is the most direct solution.
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