Special anti-counterfeiting numbering machine and

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Special anti-counterfeiting numbering machines and monitoring systems in bill printing (I)

with the development of China's commodity economy on December 18, 2013 and information technology, the types and printing volume of tickets in various regions have increased significantly in recent years. Such bills include: commercial documents, forms, invoices, cheques, certificates, certificates, documents, etc

in the printing of commercial paper, offset lithography and embossing are two main printing processes. Offset printing is mainly used for printing tables, words and shading because the ink color is uniform and delicate. Its anti-counterfeiting function, first, can be achieved through special anti-counterfeiting design plate making. For example, rainbow shading, relief shading, copy proof shading, gradient shading, tuanna, decorative lace, miniature text, "pattern unlocking" technology, etc. Second, through special anti-counterfeiting materials. For example, all kinds of colored gummed paper, water wave embossed paper, ancient coins, chrysanthemums, plum blossom, five stars, special customized watermark paper, safety thread paper, colored fiber paper, and other anti-counterfeiting papers, so that the public can identify the authenticity by relying on their senses. In addition, special anti-counterfeiting inks such as UV fluorescent ink, infrared fluorescent ink, magnetic ink and 0vi ink also improve the anti-counterfeiting performance of bills

relief printing is mainly used for printing other marks, badges and numbers because the ink is thick and clear. The number printing is a remarkable feature of commercial bill printing. All kinds of bills basically need to be printed with various numbers. These numbers not only have the function of counting, but also have the function of machine reading and information transmission. At the same time, they are also an important means of anti-counterfeiting

the anti-counterfeiting effect of bill number is mainly manifested in four aspects:

1. The printing method of bill number is embossing. Under the effect of printing pressure, this kind of printing method will inevitably leave concave marks on the front and convex marks on the back of the bill. This kind of embossing marks can be visually identified by eyes or felt by hands, which is a significant feature different from other printing processes. In the actual circulation, many forgeries use offset printing, color copying and other methods to print numbers. There is no trace of embossing, and the numbers are the same. Using this method to identify them, Bayer recently announced that Richard Pott was appointed chairman of the board of supervisors of Bayer materials technology (BMS) to simply distinguish the authenticity

2. There are certain rules in the font, font style, thickness, outline size and other process standards of the bill number, while counterfeit products must be contrary to this law. In particular, the consistency of these process standards is an important factor to determine their anti-counterfeiting. Due to the limitation of the technical level of the ordinary numbering machine used in the society, it is difficult to ensure that each batch of numbers engraved are uniform and consistent, and some numbers on the same ticket are even different in thickness, so it is easy to be copied, of course, it is not anti-counterfeiting. In addition, when designing bill numbers, special font shapes are used, which makes it difficult for general numbering machine manufacturers to imitate, which is also an effective means of anti-counterfeiting

3. The number printed on the bill has certain sequence requirements, and serial number is the most common numbering sequence. In order to prevent counterfeiting, some manufacturers specially adopt a special numbering rule for number printing, and this special numbering rule is like a "password", which is confidential to outsiders and can only be identified by themselves. For example, the common remainder factor coding method and the coding method with special check bits belong to this kind of anti-counterfeiting means

4. Ink is the medium of number printing, through the selection of color and performance of number ink; For example, using magnetic ink, color changing ink and other methods can also play a good anti-counterfeiting role

most of our common numbers are Arabic numerals and serial numbers. However, in recent years, China has made great progress in the design of bills. In addition to the use of special watermark paper, fluorescent ink, anti-counterfeiting Relief Shading and other technical measures, the personalized design of bill numbers is also a very obvious trend. Here we mainly introduce the characteristics and anti-counterfeiting functions of several special bill numbers developed by our Beijing banknote printing factory numbering machine factory for the financial, financial, tax, transportation, postal, customs and other systems

1. Bar code

bar code technology was first produced in the 1920s, and its initial purpose was to realize automatic sorting of postal documents. The application of bar code has the following advantages: (1) reliable and accurate. Generally, keyboard input is an error every 300 characters on average, while bar code input is an error every 15000 characters on average; (2) Data input speed is fast. Generally, 12 characters or strings can be input after scanning the bar code for 0.3 seconds; (3) Economical and cheap. Using the mechanical bar numbering machine can realize a single number economically, which is very suitable for the printing of large quantities of bills; (4) Flexible and practical, with good confidentiality. As a kind of pre prepared information, bar code symbol can be used alone, or it can form an identification system with relevant equipment to realize automatic high-precision identification, and can also be connected with other control devices to realize the automatic management of the whole system, while outsiders do not know its information content

when choosing the application of bar code, we must first determine the code system of bar code. At present, the commonly used code systems are: 39 code, kudeba code, etc. In addition, customers can also customize special check bit carry mode according to their needs. For example, random check bit mode, M9, M7 and other carry modes all have good "secret anti-counterfeiting" performance

with the increase of bill usage, bill management and bill information processing, people will put forward more and more demands for bar codes on bills. Due to the high quality requirements and great manufacturing difficulties of bar code numbering machines, the domestic products used in the past were basically imported products with high prices, which also inhibited some demand to a certain extent. With the popularization and use of domestic bar code numbering machines represented by the numbering machine manufacturer of Beijing banknote printing factory, this demand will continue to be met

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