In album printing, due to various reasons, there are many reasons for this kind of problem. Today, I'll give you a detailed introduction of the reasons for the printing of album.

1、版面水分大小控制不当。

1. Improper control of moisture content in the layout.

如果版面水分过大，就是使版面及墨辊带有一层较厚的水膜，进而影响油墨的正常均匀转移和涂布，这样就容易引起掉版现象，而且版面水分过大还会使印刷墨色偏淡，对此如果盲目采取增加输墨量来提高墨色浓度的话，则会因水大墨大造成乳化过度，而且如果版面水分偏小，则无法与油墨抗衡，使版面油墨层铺展，也会引起糊版现象。

If the moisture content of the layout is too large, it means that the layout and ink roller have a thick water film, which will affect the normal uniform transfer and coating of the ink. In this way, it is easy to cause plate dropping, and the excessive moisture content of the layout will make the printing ink lighter. If we blindly increase the ink flow to improve the ink concentration, it will cause excessive emulsification due to the large amount of water and ink Surface moisture is too small, it can not compete with the ink, so that the layout of the ink layer spread, will also cause paste version phenomenon.

2、润版液酸碱度太强。

2. Fountain solution pH is too strong.

如果润版液酸性太强的话就会腐蚀画册印刷砂目，破坏印版的亲水层，容易使印刷图文在压印刷过程中被磨掉，因此，润版液的PH值在5左右刚刚好。

If the fountain solution is too acidic, it will corrode the album printing sand, destroy the hydrophilic layer of the printing plate, and easily make the printed text and text be worn off in the process of pressure printing. Therefore, the pH value of the fountain solution is just about 5.

2、油墨粘度过大。

2. Ink viscosity is too high.

胶印过程中如果油墨的粘度过大，除了使油墨转印出现困难以外，还会破坏墨层中间断裂的条件，使版面剩余的墨层不足，其结果就会使印版图文部分裸露磨损，造成掉版。

In the offset printing process, if the viscosity of the ink is too high, in addition to making it difficult to transfer the ink, it will also damage the condition of fracture in the middle of the ink layer, so that the remaining ink layer of the layout is insufficient. As a result, the graphic part of the printing plate will be exposed and worn, resulting in plate dropping.

4、着墨辊老化。

4. Ink roller aging.

着墨辊老化后，亲水性能就会增强，而亲油墨的性能就会减弱，导致传递油墨的性能差，在机械滚压的过程中，形成“水包油”类型的油墨乳化，之后导致印版油腻和武汉画册印刷图文部分掉版。

After the ink roller aging, the hydrophilic performance will be enhanced, and the hydrophilic ink performance will be weakened, resulting in poor transfer ink performance. In the process of mechanical rolling, the "oil in water" type of ink emulsification will be formed, and then the printing plate will be greasy and the printing image and text part of Wuhan picture album will be lost.

5、设备老化。

5. Equipment aging.

当设备使用老化时，一些关键部件润滑不良造成磨损、松动，如滚筒轴头、轴瓦、齿轮部件、偏心套等。那么，滚筒在合压过程中，便容易产生微量的颤动或滑动现象，从而加剧对印版版面摩擦磨损，致使印迹转移过程中挤压变形间接引起掉版、糊版的现象的产生。

When the equipment is aging, some key parts are worn and loose due to poor lubrication, such as roller bearing head, bearing bush, gear parts, eccentric sleeve, etc. Then, in the process of pressing, the cylinder is easy to produce a small amount of vibration or sliding phenomenon, which aggravates the friction and wear of the printing plate, resulting in the extrusion deformation in the process of imprint transfer, which indirectly causes the phenomenon of plate drop and paste.

另外，橡皮布不平整也会导致画册印刷出现掉版的现象。当橡皮布的衬垫不平或包勒不紧出现虚松情况时，其表面产生隆起现象，压印时产生不正常的摩擦而破坏印版膜层，从而引起掉版、糊版现象的产生。

In addition, the uneven blanket will also lead to album printing out of the phenomenon. When the blanket cushion is uneven or the package is not tight, there is a virtual loose situation, the surface of the bulge phenomenon, abnormal friction and damage to the plate film during imprinting, resulting in plate drop, paste phenomenon.