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常用的凸版印刷版介紹

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2020-08-23 | 525 Views | 🔊 Click to read aloud ❚❚ | Share:
常用的凸版印刷版介紹

常用的凸版印刷版介紹

(1)銅鋅凸版製版法

其通過照相的方法,把原稿上的圖文復製成正陰像底片,然後將正陰底片的圖文曬到塗有感光層的銅版或鋅版上,經顯影堅膜後用三氯化鐵或硝酸將印版版面的空白部分進行腐蝕.從而得到浮雕般該方法的製版工藝流程為:版材準備一曬版一腐蝕→整版→打樣。


(2)感光樹脂版製版法

感光樹脂版是20世紀50年代後出現的凸版制版法。它是利用照排的膠片或其他方法製成膠片曬制的印版,經曬版曝光後,未曝光部分的樹脂被水沖洗掉,形成下凹的印版空白部分,曝光部分的樹脂硬化而形成印版的圖文部分。感光樹脂版不僅提高了製版的速度,而且廢棄鉛合金印,使冷排技術更完善,為凸版印刷開闢了新途感光樹脂版的版材種類很多,

常用的凸版印刷版介紹
常用的凸版印刷版介紹

從樹脂成型的形態上可分為液體固化型和固體硬化型兩大類

①液體感光樹脂版的製作過程為:鋪流→曝光→顯影→乾燥與後曝光→印刷。這種感光性樹脂凸版是即塗型版材,價格低,尺寸穩定性較差,版面伸縮性大,容易受溫度、濕度的影響。此凸版適合於製作較粗糙的線條文字版


②固體感光樹脂版的製作過程為:曝光→顯影→
乾燥→後曝光固體感光樹脂版用機械成型,平整度較好是預塗型版材,固定於金屬片基或聚酯薄膜片基,收縮性小,尺寸穩定,質量較高,可製作網線圖版

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