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胶片印刷时先印一道撤淡剂是为什么
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2020-10-27, 12:18
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狐狐狐狐
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等级: 小兄弟
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Join Date: 2019-07-18, 08:44
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Cash: 12金币
Assets: 12金币
Reputation: 10
Thanks: 4
Thanked 5 Times in 3 Posts
撤淡剂也叫透明油,可以理解成没有颜色的油墨;
在印刷时首先过一遍撤淡剂,主要目的还是为了去除纸粉,防止后面色座印刷时纸粉粘在橡皮布上,造成如白点墨点之类的质量问题;
撤淡剂对改变附着力的影响很小,相对的在光银镀铝膜上过
清漆
,其作用才更多的是提高油墨在银卡纸上的附着力;
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