A bill is a kind of valuable or denominated printed matter that contains text, patterns, numbers, shading, etc., produced by means of secure printing. It not only has use function, but also has direct or indirect value function, has authority and sense of value, and belongs to special printed matter. Due to the special function of bills, therefore, similar to currency printing, the application of anti-counterfeiting technology in bill printing is very important. Commonly used bill security methods include paper security, ink security, printing security, and printed pattern security. Among them, the background shading anti-counterfeiting design is an important part of the pattern anti-counterfeiting, and it is also a way of better application effect in bill printing today. Unlike ordinary color-printed products, bills are a type of printed matter with serious functions, words and numbers are the main body of bills, and the patterns mostly appear in the form of unobtrusive background shading, and the background shading is usually made into anti-counterfeiting effect. Both beautiful and anti-counterfeiting. In addition, based on computer digital technology, Founder has developed the Founder Hyperline Anti-counterfeiting Design System, which is specifically designed to design anti-counterfeiting shading.
The safety shading designed by Hyperline software is obtained by irregular deformation and special effects processing of multiple vector lines. The anti-counterfeiting design is completed in the plate-making and realized in printing without adding additional production and processing costs. The basic elements of shading are lines with different thicknesses. These lines have the function of anti-copy. The reason is that after shading is photographed or scanned, vector lines with different thicknesses are converted into dot matrix images, which will cause a large loss of graphics and color information. , Unable to reproduce the shape of the original line. When making changes, faced with such complicated and changeable lines, you ca n’t start to change them, making counterfeiters have no chance. In addition to the anti-copy function of the shading lines, the security shading itself also has a significant anti-counterfeiting function. The shading can be varied, forming various graphics, and various anti-counterfeiting marks can be added to it, such as general anti-counterfeiting effects such as Tuanhua, embossed, and micro-reduction, as well as professional anti-counterfeiting effects such as unlocking and splitting. Identification, very suitable for use in bill printing.
1 Ordinary shading
Common shading generally includes ground patterns, ball flowers and lace.
The ground pattern refers to the patterns that are placed on the bottom layer of the printed content and are used purely as a background. It is a repeated pattern formed by repeated changes of line elements. In the printing of bills, it is always achieved by printing the first set of color sequences on the front side. The characteristic of the ground pattern is that it is rich in variability. It uses some very thin and light lines to form a layer of elegant base map. Tuanhua is based on the various shapes of flowers. With the density, thickness, curvature and color of the lines, it is appropriately deformed and exaggerated to form a flower shape with clear layers, beautiful lines and smooth contours Graphics. The group flower effect can be used alone or combined with other effects to produce excellent visual effects. Lace is a hollow frame figure formed by continuous replication of one or several line elements. There are fully enclosed and semi-enclosed, with single-layer lace and double-layer lace. Due to the characteristics of the frame shape of the lace itself, it often does not overlap with other printed content, so its color can be slightly brighter, which plays a role of peripheral decoration in bill printing.
When designing the above-mentioned shading, the thickness of the lines and the spacing of the lines can be changed at any time, so the designed graphics are also sparse or dense, which changes from time to time. Its anti-counterfeiting role in bill printing is mainly reflected in the complexity of the pattern and the anti-copy function.
2 Relief
Use line and ground pattern as the base, and combine with text or logo pictures to carry out the relief effect of the pattern design operation. When designing this effect, it must be composed of two parts: the shading and the picture. The picture is used to make the concave and convex graphics , And before using it, first convert the continuously adjusted pictures into line graphics. Its design principle is that there is a difference in the thickness and density of the lines of the shading part and the picture part. When the two groups of graphics are combined together, the two parts of the pattern seem to be located on different levels visually, where the picture content is uneven Sense, producing an embossed effect.
When making the relief effect, you can arbitrarily choose the picture material according to the actual needs of the bill, that is, the concave and convex content can be varied to produce an interesting and vivid picture effect. For example, a "ten" relief can be designed on the bills used by medical institutions, and a "SW" relief can be made on tax bills. If it is a zoo ticket, animal shapes can be used. In this way, the bill not only has an excellent anti-counterfeiting effect, but also has a sign function.
3 Micronization
Miniaturization is to reduce the text to a degree that is invisible to the naked eye, and connect these reduced text into lines or form a graphic effect. It is required that the height of the Chinese text is less than 0.22mm after the reduction, and the height of the English text is less than 0.2mm after the reduction. The lines formed by microtext can also form various patterns, and have a good anti-counterfeiting function. The design feature of miniaturization is to replace lines with words, combined with other functions of shading design, can generate many changes. These micro-lines are generally composed of texts with specific meanings. Sometimes it is necessary to use a magnifying glass to see these texts. This anti-counterfeiting method is very common in bill printing. Generally, in the scratch-off tax invoices of various places, there is a micro line under the three words "scratch-off area". For example, on the scratch-off tax invoice of Gansu Province in 2003, the micro line under the magnifying glass was composed of the four letters "GLTB", which is the abbreviation of "Gandhi Tax".
Anti-counterfeiting in this way can form micro-line ground pattern, micro-line lace, micro-clustered flower effect in shade design, and can also be arranged alternately in Chinese and English. The miniature design is convenient and fast, and the expression is exquisite and unique, full of change, which plays the dual role of anti-counterfeiting and creativity.
4 unlock
Unlocking is a relief effect formed by the interference phenomenon of light. Unlike ordinary reliefs, its bump effect cannot be seen directly, but only through a special "diaphragm" to see the true face of the relief image. The material of this diaphragm is similar to that of film, and its interference intensity with light should be matched with the design program, that is, the diaphragm and the hidden design content are in one-to-one correspondence. The diaphragm is an essential tool for observing patterns, it is like a key to unlock the mysterious lock. Therefore, the anti-counterfeiting effect of this super line is called "unlocking". The content of the unlocking effect cannot be recognized by the naked eye. Even if the shading is reproduced by copying methods such as photography and scanning, it is impossible to copy the unlocking effect together, which is extremely anti-counterfeiting. In addition, unlocking also has the characteristics of wide application range, flexible form, low production cost, and easy identification. It is a potential anti-counterfeiting method.
5 Split line
In super line design, splitting a line is the effect of dividing a line into two or more thin lines to form a pattern. Its main feature is that the thickness of continuous lines can be changed. For example, after splitting a 1.2mm line, two 0.6mm thin lines can be formed, and three 0.4mm thinner lines can also be generated. The line can be divided into multiple from one, and can also be composed of multiple, and it is continuous. This type of line is impossible to achieve by general graphics processing software, and the thickness of this line frequently changes in the splitting effect, which makes it difficult to recognize the image input device, so that it cannot be recognized at all, and has a very strong Anti-copy function, so its anti-counterfeiting function is obvious.
Understand the various anti-counterfeiting functions of shading. When applying shading anti-counterfeiting technology, you should also pay attention to the following two points: 1) If a bill with anti-counterfeiting shading may be reprinted multiple times, you must keep the design draft and related data. Such as the thickness of the line, the angle of inclination, the cycle of the cycle, the ratio of the spot color, etc., for the next use. Otherwise, you may no longer be able to design the same anti-counterfeiting shading as the previous one, making a joke that you have "prevented" yourself outside; Colors, because the bright colors with high purity are easily separated by color filters through photography, etc., which is convenient for counterfeiters to copy. Therefore, the use of mixed colors with low saturation as much as possible is conducive to anti-counterfeiting. In the process, a small amount of black or brown ink is generally added to the color ink to reduce the purity of the color ink and improve the anti-copy performance of the shading.
At present, the anti-counterfeiting shading that is used more in bill printing is common shading and microfilming technology. In the future technological transformation, if all kinds of anti-counterfeiting shading can be fully used and combined with each other, the shading anti-counterfeiting technology will definitely play a more prominent role in bill anti-counterfeiting printing.
Puyang Optimus Household Products Co., Ltd , https://www.magicspongecn.com