1. Dirty printing

故障原因：水墨不干或水墨膜層太厚；層水墨膜層不均勻；過高的表面張力致水墨不易干燥

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

排除辦法：提高干燥速度；測(cè)量調(diào)整網(wǎng)紋輥、印版和壓力輥間壓力、軸的平行度；更換溶劑，減少水墨膜層厚度，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：印版太淺；印刷壓力太大；供墨量太多；水墨粘度太高；水墨干燥速度過快；

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;

排除辦法：加深印版；調(diào)整印刷壓力；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，疊色不良

3. Poor color stacking

故障原因：多色套印中印后面的顏色時(shí)，前一色未干；后印的顏色使前一色發(fā)生剝離現(xiàn)象；后印的色疊印不上去 排除辦法：提高*色干燥速度；降后印色墨的粘度或降印刷壓力；降后一色的粘度或提高其附著力

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，印刷針孔或魚眼

Pinhole or 4-pin printing

故障原因：加消泡劑過多或消泡劑與水墨不溶；承印材表面張力過大；水墨泡沫或微沫過多

Reasons for failure: excessive defoaming agent or insoluble agent with ink and ink, excessive surface tension of printing material, too much ink or froth.

排除辦法：更換水墨或加沒有消泡劑的新鮮水墨；加入合適的添加劑；除去泡沫或更換水墨

Remedy: replace ink and ink or add fresh ink with no defoamer; add suitable additives; remove foam or replace ink.

5，顏色太淺

5. The color is too light

故障原因：水墨的粘度太；網(wǎng)紋輥網(wǎng)線太細(xì)；網(wǎng)紋輥磨損或未清洗干凈；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

排除辦法：提高水墨的粘度；調(diào)換粗網(wǎng)線的網(wǎng)紋輥；換用新的網(wǎng)紋輥或?qū)W(wǎng)紋輥進(jìn)行徹清洗；降傳墨輥或刮墨刀的壓力或加快印刷速度。

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，顏色太深

6. The color is too dark

故障原因：水墨的粘度太高；網(wǎng)紋輥太粗；水墨色飽和度太高；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

排除辦法：加稀釋劑降粘度；換細(xì)網(wǎng)紋輥；加撤淡劑降顏色深度提高傳刮墨輥或刮墨刀的壓力

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，印跡不實(shí)

7. False impression

故障原因：印版壓力太??；水墨膜層太??；水墨的粘性大；紙板表面太濕或太光

Causes: plate pressure is too small; ink film is too thin; ink viscosity is large; paperboard surface is too wet or too light

排除辦法：增加印版壓力；增加墨層厚度；加慢干劑，降水墨PH值，或提車速；加入合適的添加劑

Solution: increase plate pressure; increase ink layer thickness; add slow drying agent, reduce ink pH value, or increase speed; add appropriate additives

8，印刷雜色

8. Printing noise

故障原因：印版表面不光或不平整；印版壓力不當(dāng)；水墨粘度太；墨加水太多使水墨失去平衡；網(wǎng)紋輥臟

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

排除辦法：壓緊襯墊與印版；調(diào)整印刷輥壓力；加新鮮墨提高粘度；加新鮮水墨或?qū)⒚撍畡┘尤胨?；清潔或更換網(wǎng)紋輥

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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