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BuKePrinting >> Bookprinting >> 陽圖型PS版的製版原理

陽圖型PS版的製版原理

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2020-09-14 | 461 Views | Share:
陽圖型PS版以光分解型重氮化合物作為感光材料,它用陽圖底片作原版來曬版,空白部分受紫外線照射後,感光劑分解並放出氮氣,剩餘物質用稀鹼溶液顯影時,依次與水分子和鹼發生反應,生成能溶於水的物質而被水沖去,露出版基上親水的氧化鋁膜,作為印版的非圖文部分。

陽圖型PS版的製版原理

陽圖型PS版以光分解型重氮化合物作為感光材料,它用陽圖底片作原版來曬版,空白部分受紫外線照射後,感光劑分解並放出氮氣,剩餘物質用稀鹼溶液顯影時,依次與水分子和鹼發生反應,生成能溶於水的物質而被水沖去,露出版基上親水的氧化鋁膜,作為印版的非圖文部分。


圖文部分因有陽圖片上的圖文擋光,感光劑不會分解,也就不能和稀鹼溶液反應而溶於水,留在PS版上未感光的重氮化合物感光劑,具有良好的親油性,成為印版的圖文部分基礎。

陽圖型PS版的製版原理
陽圖型PS版的製版原理

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