图文印迹残缺不整、缺笔断划主要是烫金纸输送速度、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,印刷厂的印版损坏或变形,这是造成图文印迹残缺不全的重要原因之一。因此,彩印厂如发现印版损坏,应立即修复或更换印版。印版变形使印版承受不了所施加的烫印压力,应更换印版并调整压力。如果烫金纸裁切和输送偏差,烫金纸横向裁切时留边太小或裁切歪斜放卷输送时发生偏离,就会使烫金纸与印版图文不吻合,部分图文露边而造成残缺不全。
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.
为防止出现这样的问题,应在裁切烫金纸时,使其整齐平整,适当增加留边尺寸。烫金纸输送速度与紧度不当也会产生这种故障。烫金纸接料装置发生松动移位,或卷芯与放卷轴之间松动,放卷速度发生变化,烫金纸松紧程度发生变化,使图文位置发生偏离,造成图文残缺。
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.
印刷厂这时要调整收卷和放卷位置,烫 金纸过于张紧,则应适当调整压卷滚筒压力和收卷滚筒拉力,保证有合适的速度利紧度。烫印材料与被烫印物不适或印刷时喷粉过多也会出现这种故障,则应注意调整。此外,印版部分在底板的位置发生移动、掉落,压印机构的衬垫移位等,使正常的烫印压力发生变化,不均匀,就会造成图文印迹残缺不全,如压力过轻,可加大压力。
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,彩印厂在烫金纸烫印过程中,应经常检验烫印质量,发现质量问题立即进行分析,并检查印版和衬垫物。发现印版移动或衬垫物移位,及时调整,把印版和衬垫物放回原位固定。
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.