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BuKePrinting >> process >> 印刷工藝過程之三：製版

印刷工藝過程之三：製版

From:Buke printing factory of China深圳步殼印刷廠 | Author:China Bukeprinting factorybook0755 | Published time: 2020-07-30 | 1303 Views | Share:
印刷工藝過程之三：製版。製版，用於印刷的色版稱為PS版,這是一種鋁質的金屬版,錶面有陽極氧化層,PS版的一面覆有藥膜。

印刷工藝過程之三：製版

製版，用於印刷的色版稱為PS版,這是一種鋁質的金屬版,錶面有陽極氧化層,PS版的一面覆有藥膜。

膠片的作用是在曝光時對色版上的藥膜進行定影。我們把膠片覆蓋在PS版上覆有藥膜的面,在藍紫光燈下曝光,膠片上完全透明的地方,色版會被藍紫光燈完全照射,藥膜會完全分解,而膠片上有影像或文字的地方由於不透明,PS版上的藥膜不會分解。

曝光後的PS版在顯影液中,分解的藥膜被清洗之後,膠片上的影像就完全轉移到了PS版上。在印刷時,PS版上有藥膜的地方會吸附油墨,沒有藥膜的地方,顯露陽極氧化層面吸附水分,在印刷中的顏色部分會轉移到印刷物上。


分色製版工序在數字印刷中是不需要它們的省略是數字印刷成本降低的主要原因。

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