圖文印跡殘缺不整、缺筆斷劃主要是燙金紙輸送速度、印版等原因造成的。
Incomplete image and text imprints and broken pens are mainly caused by the transfer speed of gilding paper and printing plate.
例如，印刷廠的印版損壞或變形，這是造成圖文印跡殘缺不全的重要原因之一。因此，彩印廠如發(fā)現(xiàn)印版損壞，應(yīng)立即修復(fù)或更換印版。印版變形使印版承受不了所施加的燙印壓力，應(yīng)更換印版并調(diào)整壓力。如果燙金紙裁切和輸送偏差，燙金紙橫向裁切時留邊太小或裁切歪斜放卷輸送時發(fā)生偏離，就會使?fàn)C金紙與印版圖文不吻合，部分圖文露邊而造成殘缺不全。
For example, the printing plate of a printing factory is damaged or deformed, which is one of the important reasons for incomplete image and text imprint. Therefore, if the printing plate is damaged, the color printing factory should immediately repair or replace the printing plate. The plate deformation makes the plate unable to withstand the applied hot stamping pressure. The plate should be replaced and the pressure adjusted. If there is deviation in the cutting and conveying of the gilding paper, the left edge of the gilding paper is too small when it is horizontally cut, or the deviation occurs when the cutting is skewed and the unwinding is transported, the gilding paper will not match the printing plate image and text, and part of the image and text will be exposed, resulting in incomplete parts.
為防止出現(xiàn)這樣的問題，應(yīng)在裁切燙金紙時，使其整齊平整，適當(dāng)增加留邊尺寸。燙金紙輸送速度與緊度不當(dāng)也會產(chǎn)生這種故障。燙金紙接料裝置發(fā)生松動移位，或卷芯與放卷軸之間松動，放卷速度發(fā)生變化，燙金紙松緊程度發(fā)生變化，使圖文位置發(fā)生偏離，造成圖文殘缺。
In order to prevent such problems, the gilding paper should be cut to make it neat and flat, and the margin size should be increased appropriately. This fault can also be caused by improper conveying speed and tightness of bronzing paper. In case of looseness and displacement of the foil stamping paper receiving device, or looseness between the coil core and the unwinding shaft, the unwinding speed will change, and the tightness of the foil stamping paper will change, which will cause deviation of the image and text position, resulting in incomplete image and text.
印刷廠這時要調(diào)整收卷和放卷位置，燙 金紙過于張緊，則應(yīng)適當(dāng)調(diào)整壓卷滾筒壓力和收卷滾筒拉力，保證有合適的速度利緊度。燙印材料與被燙印物不適或印刷時噴粉過多也會出現(xiàn)這種故障，則應(yīng)注意調(diào)整。此外，印版部分在底板的位置發(fā)生移動、掉落，壓印機構(gòu)的襯墊移位等，使正常的燙印壓力發(fā)生變化，不均勻，就會造成圖文印跡殘缺不全，如壓力過輕，可加大壓力。
At this time, the printing factory should adjust the winding and unwinding positions. If the gilding paper is too tight, the pressure of the crimping drum and the tension of the winding drum should be adjusted appropriately to ensure a proper speed tightness. If the hot stamping material is not suitable for the hot stamping material or there is too much powder spraying during printing, you should pay attention to the adjustment. In addition, the printing plate moves and drops at the position of the base plate, and the pad of the imprinting mechanism shifts, which changes the normal hot stamping pressure. Uneven hot stamping pressure will result in incomplete image and text prints. If the pressure is too light, the pressure can be increased.
因此，彩印廠在燙金紙燙印過程中，應(yīng)經(jīng)常檢驗燙印質(zhì)量，發(fā)現(xiàn)質(zhì)量問題立即進行分析，并檢查印版和襯墊物。發(fā)現(xiàn)印版移動或襯墊物移位，及時調(diào)整，把印版和襯墊物放回原位固定。
Therefore, the color printing factory should often check the hot stamping quality during the hot stamping process, immediately analyze the quality problems found, and check the printing plate and padding. If the printing plate moves or the liner moves, adjust it in time, and put the printing plate and the liner back in place.
濟南華政印務(wù)有限公司
