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曬版對彩色印刷質量有什么影響
發布時間(jian):2022-08-10 19:25:46瀏覽次數:1403

  在曬版(ban)(ban)過程中,光(guang)(guang)(guang)(guang)源(yuan)的(de)(de)(de)強(qiang)度(du),光(guang)(guang)(guang)(guang)源(yuan)與版(ban)(ban)材的(de)(de)(de)距離(li),以及曝(pu)光(guang)(guang)(guang)(guang)時(shi)(shi)(shi)(shi)間(jian)(jian)(jian)的(de)(de)(de)長(chang)(chang)短都會(hui)影(ying)響曬版(ban)(ban)質量。光(guang)(guang)(guang)(guang)源(yuan)強(qiang)、距離(li)短,曝(pu)光(guang)(guang)(guang)(guang)時(shi)(shi)(shi)(shi)間(jian)(jian)(jian)相(xiang)對較(jiao)短;光(guang)(guang)(guang)(guang)源(yuan)弱、距離(li)長(chang)(chang),曝(pu)光(guang)(guang)(guang)(guang)時(shi)(shi)(shi)(shi)間(jian)(jian)(jian)相(xiang)對較(jiao)長(chang)(chang)。在一定(ding)光(guang)(guang)(guang)(guang)源(yuan)及距離(li)下(xia),隨(sui)著曝(pu)光(guang)(guang)(guang)(guang)時(shi)(shi)(shi)(shi)間(jian)(jian)(jian)的(de)(de)(de)增長(chang)(chang),版(ban)(ban)材見(jian)(jian)光(guang)(guang)(guang)(guang)部(bu)分(fen)藥膜(mo)分(fen)解加劇(ju),直至(zhi)見(jian)(jian)光(guang)(guang)(guang)(guang)藥膜(mo)面(mian)完全(quan)分(fen)解。如(ru)果(guo)曝(pu)光(guang)(guang)(guang)(guang)時(shi)(shi)(shi)(shi)間(jian)(jian)(jian)繼續增長(chang)(chang),未見(jian)(jian)光(guang)(guang)(guang)(guang)部(bu)分(fen)藥膜(mo)面(mian)的(de)(de)(de)邊緣因受強(qiang)光(guang)(guang)(guang)(guang)的(de)(de)(de)輻射作用,感光(guang)(guang)(guang)(guang)藥膜(mo)也開始漸(jian)漸(jian)分(fen)解,這(zhe)樣制出(chu)的(de)(de)(de)印版(ban)(ban)圖(tu)文(wen)線條會(hui)變細,甚至(zhi)斷缺、模糊。特產包裝彩盒廠指出(chu),如(ru)果(guo)曝(pu)光(guang)(guang)(guang)(guang)時(shi)(shi)(shi)(shi)間(jian)(jian)(jian)不(bu)足,非(fei)圖(tu)文(wen)部(bu)分(fen)見(jian)(jian)光(guang)(guang)(guang)(guang)藥膜(mo)面(mian)未完全(quan)分(fen)解,印版(ban)(ban)顯影(ying)后非(fei)圖(tu)文(wen)部(bu)分(fen)仍有藥膜(mo),上機印刷時(shi)(shi)(shi)(shi)會(hui)起(qi)臟。此外,不(bu)同品(pin)牌(pai)的(de)(de)(de)印版(ban)(ban)所需的(de)(de)(de)曝(pu)光(guang)(guang)(guang)(guang)時(shi)(shi)(shi)(shi)間(jian)(jian)(jian)也不(bu)一樣,這(zhe)必(bi)須引起(qi)人們(men)的(de)(de)(de)注意。

  此(ci)外,在曬(shai)版抽(chou)真空時(shi),膠(jiao)片與印版緊貼的程(cheng)度(du)也(ye)影(ying)響(xiang)曬(shai)版質量,如果(guo)貼不(bu)實,曬(shai)出的印版可能會發生重影(ying)、模糊不(bu)清等問題。


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