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BuKePrinting >> knowledge >> 印刷工廠凸版製版技術

印刷工廠凸版製版技術

From:Buke printing factory of China深圳步殼印刷廠 | Author:China Bukeprinting factorybook0755 | Published time: 2020-07-26 | 611 Views | Share:
印刷廠凸版印刷使用的印版可以分為銅鋅版、活字版、鉛版及感光樹脂版等。活字版的製版工藝比較簡單,感光樹脂版現常用於柔性版印刷。

印刷工廠凸版製版技術

印刷廠凸版印刷使用的印版可以分為銅鋅版、活字版、鉛版及感光樹脂版等。活字版的製版工藝比較簡單,感光樹脂版現常用於柔性版印刷。

一、銅鋅版的製版工藝

復制連續調圖像,使用的網點線數較高,常用銅板做版材,製成的版稱為銅版;復制線條原稿,則選用鋅版做版材,製成的版稱為鋅版。習慣上將兩者統稱為銅鋅版。

銅鋅版是通過照相的方法,把原稿上的圖文,復製成正向陰圖底片,然後將底片上的圖文,曬到塗有感光膜的銅版或鋅版上,經顯影、堅膜處理,再用腐蝕液將版面的空白部分腐蝕下去,得到浮雕般圖文的印版


二、紙型鉛版的製版工藝

鉛版又叫紙型鉛版,是以鉛活字版為原版復制而成。

紙型是通過將薄型、厚型紙或專用紙型材料附著在活字版或銅鋅版上,施加壓力而製成的供澆鑄鉛版用的模板。用模版可以澆鑄平面和圓弧形的鉛合金印版,供平臺機或輪轉機印刷。澆鑄好的鉛版,要把背面刨平或刨光滑,並進行修整和鑽孔等,再用電鍍的方法,在鉛版錶面鍍上鐵或鉻金屬,可以增加印版的耐印力。鍍鐵的鉛版,耐印力可達10萬印左右鍍鉻的鉛版,耐印力可提高到50萬印左右。

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