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BuKePrinting >> knowledge >> 深圳印刷公司出現黑色條臟故障的原因

深圳印刷公司出現黑色條臟故障的原因

From:Buke printing factory of China深圳步殼印刷廠 | Author:China Bukeprinting factorybook0755 | Published time: 2020-07-18 | 620 Views | Share:
印刷公司印刷印品叼口處出現黑色條臟故障。其原因是:單張紙對開膠印機正常生產中在印刷品的叼口約12mm處出現長長的黑線條臟,這些黑線條臟有約3~5mm寬。如果印刷書刊,留有邊口14mm,因此其黑色臟線就留在成品的白邊上,嚴重影響產品質量。
深圳印刷公司出現黑色條臟故障的原因

印刷公司印刷印品叼口處出現黑色條臟故障。其原因是:單張紙對開膠印機正常生產中在印刷品的叼口約12mm處出現長長的黑線條臟,這些黑線條臟有約3~5mm寬。如果印刷書刊,留有邊口14mm,因此其黑色臟線就留在成品的白邊上,嚴重影響產品質量。

在雙面膠印機上,這種故障在上、下兩色印版滾筒均有發生,經檢查發現首先是印版滾筒叼口包角太小,在機器運轉中,印版的叼口包角碰到著墨輥時,兩者突然接觸,產生碰撞沖擊,使印版叼口的包角處瞬時接觸壓力加大,使印版叼口處產生黑線條臟。

排除的方法:先調節下色組印版滾筒,通過印版滾筒軸端齒輪端面長孔,松開借滾筒螺釘,轉動滾筒,使印版滾筒叼口比橡皮滾筒提前10mm,不能太多,否則影響曬版工作。

再調整上色組印版滾筒上的水輥和墨輥壓力(因為上色組不能調版),先調節著墨輥印版滾筒之間壓力,其壓墨痕跡寬度為4~5mm為宜。要註意的是調節壓力時,要調節抬高墨輥螺釘才行,再調節著水輥與印版滾筒之間的壓力使水杠寬度為6mm為宜。調節方法同上。

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