在畫冊印刷中，由于各種原因?qū)е掠∷⑦^程中出現(xiàn)掉版現(xiàn)象，導(dǎo)致這種問題出現(xiàn)的原因有很多

In the printing process of picture albums, there are many reasons for the phenomenon of plate loss due to various reasons. Today, I will give you a specific introduction to the reasons for plate loss in Jinan picture album printing.

1、版面水分大小控制不當(dāng)。

1. Improper control of moisture content in the layout.

如果版面水分過大，就是使版面及墨輥帶有一層較厚的水膜，進(jìn)而影響油墨的正常均勻轉(zhuǎn)移和涂布，這樣就容易引起掉版現(xiàn)象，而且版面水分過大還會使印刷墨色偏淡，對此如果盲目采取增加輸墨量來提高墨色濃度的話，則會因水大墨大造成乳化過度，而且如果版面水分偏小，則無法與油墨抗衡，使版面油墨層鋪展，也會引起糊版現(xiàn)象。

If the moisture content of the layout is too high, it means that the layout and ink rollers have a thick layer of water film, which affects the normal and uniform transfer and coating of ink. This can easily cause plate loss, and excessive moisture content of the layout can also make the printing ink color lighter. If blindly increasing the ink output to increase the ink concentration, it will cause excessive emulsification due to high water content and ink, and if the moisture content of the layout is too small, it will not be able to compete with the ink, Spreading the ink layer on the layout can also cause a paste phenomenon.

2、潤版液酸堿度太強(qiáng)。

2. The acidity and alkalinity of the fountain solution are too strong.

如果潤版液酸性太強(qiáng)的話就會腐蝕畫冊印刷砂目，破壞印版的親水層，容易使印刷圖文在壓印刷過程中被磨掉，因此，潤版液的PH值在5左右剛剛好。

If the acidity of the fountain solution is too strong, it will corrode the sand mesh of the album printing, damage the hydrophilic layer of the printing plate, and easily cause the printed images and texts to be worn off during the pressure printing process. Therefore, the pH value of the fountain solution is just around 5.

2、油墨粘度過大。

2. Ink viscosity is too high.

膠印過程中如果油墨的粘度過大，除了使油墨轉(zhuǎn)印出現(xiàn)困難以外，還會破壞墨層中間斷裂的條件，使版面剩余的墨層不足，其結(jié)果就會使印版圖文部分裸露磨損，造成掉版。