3.Anti-counterfeiting printing technology
The layout of the paper money majority are the people, the scenery, painting, architecture, etc as the main feature.Printing cooperate with in the complex background . Printing method mainly used the offset lithography, intaglio printing, letterpress printing and special printing. Observe view printed mainly by hand carving gravure printing method, gravure is engraver hand-carved high-precision metal intaglio, this version of the printed design in 3D design. Floating in the paper, stereo sense is strong, distinct,touch with concave and convex feeling. Manual sculpture gravure is the anti-counterfeiting means people are easy to identify, and not easy to be copied. Hand-carved plate-making due to different personal knife skill, style, unique skills. Therefore, the depth of the engraving line, arc Angle, others find it difficult to get absolutely lifelike imitation.Just the author himself can not carve out two pieces of the same version.So up to now still indispensable means on the banknotes form. Gravure can also achieve a refraction of the latent image printing technology, this technology using the different effect of the relation of different gravure lines tilted light ,at the same part of paper made from two kinds of graphic. When the graphic to light up, there was a graphic, such as the pressure sensitive paper ink level be rotated 45 degrees or 90 degrees will transform into another kind of graphic.
The complex background offset lithography to printing money. Offset lithography graphic and paper almost in the same plane, we see most of the prints using this technology, but also offset lithography printing technology is very difficult to fake. Miniature text offset printing looks like a solid or dashed to the naked eye, but under the magnifying glass, is a small clear text. Background color overlapping printing more with a few kinds of color ink dieyin the same design, thus forming a variety of colors of overlap, make the design pattern colorful.This is a kind of high precision offset printing technology, generally difficult to imitation. Docking of seal and patterns are put forward high requirements for offset printing accuracy, the precision of the printing press and printing technology are great test.
Letterpress is a plate on the graphic above layout, printing, graphic part after inking, attach paper pressure, anti-counterfeiting ink is transferred from the plate to the way of printing on paper. Printing pressure make the trace of the paper on the back is convex, this kind of printing is commonly used in paper currency number printed on the crown. Also be a kind of anti-counterfeiting.
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