1，印刷拖脏
1. Dirty printing
故障原因：水墨不干或水墨膜层太厚；层水墨膜层不均匀；过高的表面张力致水墨不易干燥
Cause of failure: the ink is not dry or the ink film is too thick; the bottom ink film is not uniform; the ink is not easy to dry due to high surface tension
排除办法：提高干燥速度；测量调整网纹辊、印版和压力辊间压力、轴的平行度；更换溶剂，减少水墨膜层厚度，或增加干燥能力
Troubleshooting: improve the drying speed; measure and adjust the parallelism of pressure and shaft between anilox roller, plate and pressure roller; change the solvent, reduce the thickness of ink film, or increase the drying capacity
2，糊版、堵版
2, paste version, block version
故障原因：印版太浅；印刷压力太大；供墨量太多；水墨粘度太高；水墨干燥速度过快；
Causes: the printing plate is too shallow; the printing pressure is too high; the ink supply is too much; the ink viscosity is too high; the ink drying speed is too fast;
排除办法：加深印版；调整印刷压力；降供墨量；降水墨的粘度；降干燥速度
Troubleshooting: deepen the plate; adjust the printing pressure; reduce the ink supply; reduce the viscosity of ink; reduce the drying speed
3，叠色不良
3. Poor color stacking
故障原因：多色套印中印后面的颜色时，前一色未干；后印的颜色使前一色发生剥离现象；后印的色叠印不上去 排除办法：提高*色干燥速度；降后印色墨的粘度或降印刷压力；降后一色的粘度或提高其附着力
Causes: when printing the back color in multi-color overprint, the front color is not dry; the back color makes the front color peel off; the back color overprint cannot go up. Solutions: improve the drying speed of * color; reduce the viscosity of the back ink or the printing pressure; reduce the viscosity of the back color or improve its adhesion
4，印刷针孔或鱼眼
Pinhole or 4-pin printing
故障原因：加消泡剂过多或消泡剂与水墨不溶；承印材表面张力过大；水墨泡沫或微沫过多
Reasons for failure: excessive defoaming agent or insoluble agent with ink and ink, excessive surface tension of printing material, too much ink or froth.
排除办法：更换水墨或加没有消泡剂的新鲜水墨；加入合适的添加剂；除去泡沫或更换水墨
Remedy: replace ink and ink or add fresh ink with no defoamer; add suitable additives; remove foam or replace ink.
5，颜色太浅
5. The color is too light
故障原因：水墨的粘度太；网纹辊网线太细；网纹辊磨损或未清洗干净；上墨量太小
Causes: the viscosity of the ink is too low; the line of the anilox roller is too thin; the anilox roller is worn or not cleaned; the amount of ink is too small
排除办法：提高水墨的粘度；调换粗网线的网纹辊；换用新的网纹辊或对网纹辊进行彻清洗；降传墨辊或刮墨刀的压力或加快印刷速度。
Solutions: increase the viscosity of ink; change the anilox roll of coarse screen; change a new anilox roll or thoroughly clean the anilox roll; reduce the pressure of ink roller or scraper or speed up the printing speed.
6，颜色太深
6. The color is too dark
故障原因：水墨的粘度太高；网纹辊太粗；水墨色饱和度太高；墨量太大
Causes: the viscosity of the ink is too high; the anilox roller is too thick; the color saturation of the ink is too high; the amount of ink is too large
排除办法：加稀释剂降粘度；换细网纹辊；加撤淡剂降颜色深度提高传刮墨辊或刮墨刀的压力
Solution: add diluent to reduce viscosity; change fine mesh roller; add diluent to reduce color depth and increase the pressure of ink transfer roller or blade
7，印迹不实
7. False impression
故障原因：印版压力太小；水墨膜层太薄；水墨的粘性大；纸板表面太湿或太光
Causes: plate pressure is too small; ink film is too thin; ink viscosity is large; paperboard surface is too wet or too light
排除办法：增加印版压力；增加墨层厚度；加慢干剂，降水墨PH值，或提车速；加入合适的添加剂
Solution: increase plate pressure; increase ink layer thickness; add slow drying agent, reduce ink pH value, or increase speed; add appropriate additives
8，印刷杂色
8. Printing noise
故障原因：印版表面不光或不平整；印版压力不当；水墨粘度太；墨加水太多使水墨失去平衡；网纹辊脏
Causes: the surface of the printing plate is not smooth or smooth; the pressure of the printing plate is improper; the viscosity of the ink is too low; too much water is added to the ink to make the ink out of balance; the anilox roller is dirty
排除办法：压紧衬垫与印版；调整印刷辊压力；加新鲜墨提高粘度；加新鲜水墨或将脱水剂加入水墨；清洁或更换网纹辊
Troubleshooting: press the pad and plate; adjust the pressure of the printing roller; add fresh ink to improve the viscosity; add fresh ink or dehydrating agent to the ink; clean or replace the anilox roller
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