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BuKePrinting >> Design >> 印刷機的油墨和水是不是絕對的不相混合

印刷機的油墨和水是不是絕對的不相混合

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2020-09-27 | 628 Views | Share:
油墨和水並不是絕對的不相混合。當談到平版印刷是基於水墨不相混合這一原理時,僅僅指的是,水墨之間的粗略現象。嚴格地分析,這種說法是不夠嚴密的。

印刷機的油墨和水是不是絕對的不相混合

油墨和水並不是絕對的不相混合。當談到平版印刷是基於水墨不相混合這一原理時,僅僅指的是,水墨之間的粗略現象。嚴格地分析,這種說法是不夠嚴密的。


在印刷中,當過量的潤濕液被揮發後,油墨與水即被著墨輥完全融合。潤濕液往往是以小水珠的形式出現,當這些小水珠經過墨輥擠壓後,水分和油墨融在一起,使油墨乳化。


從以上情況不難看出:一個良好的油墨配方,應當能使油墨在其處於小水珠的情況下,仍能夠把印版上的圖文準確無誤地傳遞給橡皮布,並清晰地印在壓印滾筒錶面的紙張上。


綜上所述,油墨和水從機理上講,是以互相排斥為前提,而在印版的錶面上保持其所謂平衡的。但是,經過比較嚴格地分析與研究後,就不難發現,油墨和水的抗衡是有限的,兩者的排斥也是相對的。如果不去涉及在高速、高溫和高壓的條件,即使在正常的速度、壓力和溫度的條件下,也能夠形成油墨和水的無條件混合。

印刷機的油墨和水是不是絕對的不相混合
印刷機的油墨和水是不是絕對的不相混合

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