扫金是精品包装印刷中的一个特殊的工艺过程，在商品包装或标签印刷品上指定部位附着特种金属粉末，借此实现金光闪烁的仿金效果。
Gold scavenging is a special process in the packaging and printing of high-quality products. Special metal powder is attached to the designated parts of commodity packaging or label printing to achieve the golden shining imitation effect.
经多色印刷生产后得到可供扫金的印刷品，再将需要扫金印成精品的印张传输给单色或双色胶印机，在需要扫金的部位印涂粘胶性底墨，然后直接传送到扫金机，将特制金粉擦涂压入底胶，就完成了扫金过程。如果印刷厂家拥有一台多色印刷机和UV干燥装置，则可以进行联机扫金，即是将印张在多色印刷机前几个色印刷好并经UV装置的充分干燥，然后在后一个色组上印涂粘性底墨，再通过连接装置进入扫金机进行扫金。以上情况在不需要扫金时，都可以在几分钟之内将扫金设备与印刷机分离，从而印刷机又可以进行普通印刷。
After multi-color printing production, the prints that can be swept gold are obtained, and then the sheets which need to be swept gold into fine products are transferred to the single or double-color offset press. Viscose undertone is printed on the parts where gold is swept, and then directly transferred to the sweep gold machine. The special gold powder is rubbed and pressed into the undercoat, and the sweeping gold process is completed. If the printer owns a multi-color printing machine and a UV drying device, the on-line gold sweeping can be carried out. That is to say, the printing sheet is printed in the front of the multi-color printing machine and dried sufficiently by the UV device, then the sticky undertone is printed on the last color group, and then the gold sweeping can be carried out through the connecting device into the gold sweeping machine. In the above case, the gold cleaning equipment can be separated from the printer in a few minutes without sweeping gold, so that the printer can carry out ordinary printing.
扫金在与其它精品印刷工艺相比较时，在包装印刷中有其独有的优势。
Sweeping gold has its unique advantages in packaging printing compared with other fine printing processes.
印金和烫金作为一种广泛使用的工艺，有很多优点，但是，也有些不足。比如，凹印机印金速度快，但是印制小字、细线时变形相对较严重，大面积印金时金属质感不够强烈；烫金作为一种传统工艺，金属感也很强，但是能耗较高，效率相对较低，套准有些困难，很小图形和很大面积烫金的，质量不易控制。而扫金工艺，操作比较简单，生产速度较高，成本较低，而且无论图纹粗细、面积大小都能获得较精细的效果。同时，由于采用全封闭式工作方式，所以没有环境污染。其实，扫金与烫金结合往往能取得更佳的效果。
As a widely used process, gold stamping and stamping have many advantages, but there are also some shortcomings. For example, gravure press printing speed is fast, but when printing small characters and thin lines, the deformation is relatively serious, and when printing large areas of gold, the metal texture is not strong enough; as a traditional process, stamping is also strong, but energy consumption is high, efficiency is relatively low, registration is difficult, very small graphics and a large area of stamping, quality. It's not easy to control. The gold sweeping process has the advantages of simple operation, high production speed, low cost, and fine effect regardless of the size of the pattern and area. At the same time, due to the use of fully enclosed mode of work, there is no environmental pollution. In fact, the combination of bronzing and bronzing can often achieve better results.
下面为大家介绍一下新型扫金机的工作过程。
The following is a brief introduction to the working process of the new gold sweeper.
通常需要一台平张双色胶印机与扫金机联接。扫金机设计了新型折叠翻转式的单张纸传送器，可轻松地展开、收起。当二者需联机时，展开单张纸传送器；当双色胶印机需单独印制其它产品时，可收起单张纸传送器。我们利用印品的分色底片，制作出用于扫金机用的PS版，安装在胶印机上，通过调整胶印机的规矩，可方便地完成套准工作。利用PS印版在印品需要上金粉的部位印上一层薄而均匀的粘性油墨（俗称“扫金涂底”）。
Usually a flat-sheet two-color offset press is needed to connect with a gold scavenger. The gold scavenger has designed a new folding and flipping sheet paper conveyor, which can be easily unfolded and retracted. When the two need to be online, unfold the sheet-fed conveyor; when the two-color offset press needs to print other products separately, the sheet-fed conveyor can be retracted. We use the color separation negatives of the prints to produce PS plate for the gold scavenger, which is installed on the offset press. By adjusting the rules of the offset press, we can easily complete the alignment work. A thin and uniform viscous ink (commonly known as "sweeping gold coating") is printed on the part where gold powder is needed by PS plate.
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