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BuKePrinting >> Questions >> 平版真的是平的嗎

平版真的是平的嗎

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2020-09-12 | 331 Views | Share:
所謂平版,就是說印版的版面是平的。這里的平與不平,均為相對而言。以印版為例,若與凸版和凹版相比,則平版是夠平的了。那麽,平版是不是像鏡面一樣平呢?當然不是。精確測量後的數據告訴我們一塊平版的圖文區約比空白區高出0.01~0.015mm。製版時,以親油抗水的物質做成圖文區,以親水抗油的物質做成空白區。

平版真的是平的嗎

所謂平版,就是說印版的版面是平的。這里的平與不平,均為相對而言。以印版為例,若與凸版和凹版相比,則平版是夠平的了。那麽,平版是不是像鏡面一樣平呢?當然不是。精確測量後的數據告訴我們一塊平版的圖文區約比空白區高出0.01~0.015mm。製版時,以親油抗水的物質做成圖文區,以親水抗油的物質做成空白區。

由於油水相斥的機理,則圖文區沾著油墨卻不沾水,空白區沾著水分而不沾油墨。

是不是所有的膠印機都採用平版而不能採用其他形狀的印版呢?那當然不是。近代薄凸版在膠印中的應用就是一例,且其印刷效果也比較理想。

而平版膠印所占比例比薄凸版膠印要大得多(膠印主要用於平版印刷),所以一般提到的膠印機都是指平版膠印機。

平版真的是平的嗎
平版真的是平的嗎

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