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靜電印刷平印與​凹印

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2021-01-06 | 611 Views | Share:
通過高壓靜電場作用,把色粉圖像轉印到承印物上,最後經過熱熔固著,得到圖像靜電印刷由於不使用液體油墨,既衛生又安全。

          靜電印刷平印與凹印

1)靜電平印

在捲簡薄金屬板上,用絕緣油墨印劇圖文後,從電極下通過使其帶上電荷,然後微上帶異性電荷的色粉,在靜電引力的作用下。

色粉附著於圖文上,而金屬板與地線相接不帶電空白部位的色粉在重力作用下而散落,圖文部分附著的色粉與承印物接觸時。

再通過高壓靜電場作用,把色粉圖像轉印到承印物上,最後經過熱熔固著,得到圖像
靜電印刷由於不使用液體油墨,既衛生又安全。

也不需要乾燥時間,因為需要熱熔固若,所以在固著前要註意防止圖像的位移。

 靜電印刷平印與凹印
 靜電印刷平印與凹印


2)靜電凹印

在回印機上配備的靜電吸墨裝置,在壓印滾筒和印版滾筒之間以10003000電壓充電,而印版滾筒接地,這樣,印版滾筒與壓印滾筒之間便形成了電場。

利用靜電吸引原理油願被吸向紙面,從而完成了像普通凹印那樣較大壓力的印刷
這種裝置可消除凹印網點損失或出現斑點的現象。

對粗質紙尤為顯著,由於是無壓印刷,故曲面、纖維面、軟面、高溫面均可印刷。並可用粉質油墨代替流動性液體油墨印刷

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