在畫(huà)冊(cè)印刷中，由于各種原因?qū)е掠∷⑦^(guò)程中出現(xiàn)掉版現(xiàn)象，導(dǎo)致這種問(wèn)題出現(xiàn)的原因有很多，今天，就給大家具體介紹一下濟(jì)南畫(huà)冊(cè)印刷掉版的原因。

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(guò)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(guò)大還會(huì)使印刷墨色偏淡，對(duì)此如果盲目采取增加輸墨量來(lái)提高墨色濃度的話，則會(huì)因水大墨大造成乳化過(guò)度，而且如果版面水分偏小，則無(wú)法與油墨抗衡，使版面油墨層鋪展，也會(huì)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(rùn)版液酸堿度太強(qiáng)。

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

如果潤(rùn)版液酸性太強(qiáng)的話就會(huì)腐蝕畫(huà)冊(cè)印刷砂目，破壞印版的親水層，容易使印刷圖文在壓印刷過(guò)程中被磨掉，因此，潤(rùn)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(guò)大。

2. Ink viscosity is too high.

膠印過(guò)程中如果油墨的粘度過(guò)大，除了使油墨轉(zhuǎn)印出現(xiàn)困難以外，還會(huì)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(huì)使印版圖文部分裸露磨損，造成掉版。

If the viscosity of the ink is too high during the offset printing process, in addition to making it difficult to transfer the ink, it can also damage the condition of the middle fracture of the ink layer, resulting in insufficient remaining ink layer on the printing plate. As a result, the exposed and worn parts of the printing plate, causing plate loss.

4、著墨輥老化。

4. Aging of the inking roller.

著墨輥老化后，親水性能就會(huì)增強(qiáng)，而親油墨的性能就會(huì)減弱，導(dǎo)致傳遞油墨的性能差，在機(jī)械滾壓的過(guò)程中，形成“水包油”類型的油墨乳化，之后導(dǎo)致印版油膩和武漢畫(huà)冊(cè)印刷圖文部分掉版。

After the aging of the inking roller, the hydrophilicity will be enhanced, while the hydrophilicity of the ink will be weakened, resulting in poor ink transfer performance. During the mechanical rolling process, an "oil in water" type of ink emulsification is formed, which later leads to greasy printing plates and partial printing of images and texts in Wuhan picture albums.

5、設(shè)備老化。

5. Equipment aging.

當(dāng)設(shè)備使用老化時(shí)，一些關(guān)鍵部件潤(rùn)滑不良造成磨損、松動(dòng)，如滾筒軸頭、軸瓦、齒輪部件、偏心套等。那么，滾筒在合壓過(guò)程中，便容易產(chǎn)生微量的顫動(dòng)或滑動(dòng)現(xiàn)象，從而加劇對(duì)印版版面摩擦磨損，致使印跡轉(zhuǎn)移過(guò)程中擠壓變形間接引起掉版、糊版的現(xiàn)象的產(chǎn)生。

When the equipment is aging, poor lubrication of some key components can cause wear and looseness, such as drum shaft heads, bearing shells, gear components, eccentric sleeves, etc. So, during the pressing process, the drum is prone to slight shaking or sliding, which exacerbates the friction and wear of the printing plate and plate, leading to the indirect occurrence of plate loss and paste caused by the compression deformation during the transfer of the imprint.

另外，橡皮布不平整也會(huì)導(dǎo)致畫(huà)冊(cè)印刷出現(xiàn)掉版的現(xiàn)象。當(dāng)橡皮布的襯墊不平或包勒不緊出現(xiàn)虛松情況時(shí)，其表面產(chǎn)生隆起現(xiàn)象，壓印時(shí)產(chǎn)生不正常的摩擦而破壞印版膜層，從而引起掉版、糊版現(xiàn)象的產(chǎn)生。更多相關(guān)內(nèi)容了解就來(lái)咨詢我們http://775828.cn吧！

In addition, the unevenness of the rubber blanket can also lead to the phenomenon of plate loss in the printing of the album. When the cushion of the rubber blanket is uneven or the wrapping is not tight, there is a phenomenon of virtual looseness on its surface, which causes abnormal friction during embossing and damages the printing plate film layer, resulting in plate loss and pasting. For more information, please consult us http://775828.cn Come on!