The Problems Existing in the Application of Digital Printing in Document Printing

With the increasing popularity of e-government online work, paper red documents and internal materials are no longer the main medium for party and government agencies to carry out government affairs activities, but only serve as an archived role, some documents only need to print a few or dozens of Copies. If you use a traditional printing press to run pad paper is not only dozens. Less print, high waste, many processes, long cycle. These factors have seriously hindered the acceleration of government affairs. In addition. For security and confidentiality needs. Most party and government agencies are also responsible for the printing of conference materials for municipal and provincial-level national conferences. Tight. Heavy task. How to improve the printing efficiency and printing quality has become an urgent problem for the party and government agencies' printing factories.

Digital printing is convenient, quick, flexible, and efficient. It has a lot of advantages such as stable ink and ink, which makes up for many defects in traditional printing. It also solved the above problems in the organization's document printing system. just now. The printing presses of the party and government agencies from the central government to provinces, municipalities and autonomous regions have successively purchased digital presses. And gradually expand the scale. however. In the process of using digital presses, we also encountered some issues that cannot be ignored. We will discuss with you here.

one. Paper problem
(a) Paper size
The organization's printing and writing system currently uses two paper types, A4 and 16R-, which are applicable to government and party committee systems respectively. The party committee system also focuses on the use of 16R-double offset paper with a yellowish color. At present, digital printing machines are basically manufactured abroad. The widely accepted size is the internationally popular AB type paper. Some digital presses do not recognize eight sheets of paper that we often use. The result is that you have to use A3 paper for printing. Causes waste of paper. The other printed products are due to creep. Extremely prone to irregular edges. Therefore, in the post-order binding, trimming is also required. If using A3 or eight-size paper printing, there will always be a situation where the final product size is too small, which requires the printing paper to be smaller than the A3. Moreover, bleeding prints also require a slightly larger paper size than the finished product. therefore. When we purchase a digital press, we must pay attention to whether the range of paper trays can meet our needs and whether we can customize the size.

(b) Paper suitability
Digital printing machines based on electrostatic copying technology prefer electrostatic photocopying paper. However, static photocopying paper is either high in value, or there are few wood pulps and paper powders. This makes us self-supporting printing houses can only hope to be overwhelmed by paper. therefore. We are buying a digital press. Be sure to consider the suitability of the paper. Digital printing machine heating temperature is relatively high. Ordinary offset paper is printed by a digital printer. Radial generally have to reduce 1 ~ 2mm. The latitude is generally reduced by 0.5 to 1mm. And with the weather and humidity constantly changing. This is for a document printing system with a very strict size requirement. It is a problem that must be solved. Our experience is: preparing a thermostatic carton. Cut off some paper in advance.

(c) Paper jam rate
Whether it is based on pick roller. Digital printing machines that send paper based on conveyor belts will produce different degrees of jams. Usually the phenomenon of electrostatic paper jam is relatively small. And offset paper. Especially the relatively small amount of double paperboard jam is more obvious. There are many reasons for paper jams. There may be reasons for static electricity, too much paper, etc. Paper jams will not only waste paper. More will be due to clear the card. Caused a delay in time. For every minute and every time the official document printing system. The paper jam rate must be considered. and. Different seasons. Different temperature and humidity. The paper jam rate is not the same. Therefore, we can try it locally if we have conditions to purchase. Check the paper jam rate. Then consider whether to buy.

two. Printing quality
Low-end digital printing machine in the printing flat screen, large shading. Easy to print unevenly and then low-end digital printer printing lines are mostly in the 100 lines / inch or so than the traditional printing newspaper printing lines even lower. And the digital press uses toner. Larger toner particles are more likely to lose detail. The image is not rich in gradation. Therefore, if there are many graphic images in the document, it is necessary to select a digital printing machine with a high printing quality, and if it is a document with a relatively large number of characters, a digital printing machine with a low printing quality can be selected.

Digital presses need regular maintenance and care. If maintenance fails to follow, it will lead to unclear writing. Or the phenomenon of wired marks, or the lack of a certain word, etc. Therefore, in the printing process must continue to do inspection work. In addition, there may be double sheets. All must be carefully checked. The documents and materials printed by the official document printing system are all very important. Touch the temperament of the digital printing press to solve the problem in time. It is the key to avoid mistakes.

Third, software and hardware matching
For many years, most of the party and government agencies used the printing software of Peking University Founder, and the PSPRIP or PSPPRO}]-prints of Peking University Founder were printed on one side and could not be printed on both sides. Therefore, a bridge needs to be erected between the Founder typesetting software and the digital printing machine to realize PsA: two-sided printing of the parts. Fang Fangyi is a software developed by Founder PsA in Beijing University Founder a long time ago. It is used to generate PDF files from this software, and then PDF files are printed to digital printers using AdObeAC robat. Can achieve double-sided printing. However, the text easy operating system is limited to wlN98, fonts are also not the same as the current fonts, so there is a problem in matching with the current Founder typesetting software fonts, many fonts can not be reflected after the PDF. However, now the Founder Inkjet digital printing system developed by Founder is compatible with both packages. It can not only realize PsA: two-sided printing of the parts, but also DOC, TlF JPG WPSXLS, PDF EPS, PS2 s72, °CEB, PRN, S2, PS The format of the file package processing eliminates the need to convert between file formats. Together with the positive printing on the top, Czech Republic included Arthur imposition software, which can achieve imposition printing and save time. Increased efficiency. Since front-to-back is the software of Founder. Therefore, there is no problem of mismatch, and the stability is relatively good. It is a successful software. If you consider the speed of the software, the stability of the entire system, the buyer is also a good choice for India.

In the use of the digital printing press, basically, the print format of the PF!qHP PCL5 and PCL6 of AdObe's Ps print format is used. The former prints faster. Suitable for most software. It is possible to print images and back drawings. However, since the printer is not loaded with fonts, it is extremely prone to garbled characters. The Ps file being generated by the other party is not applicable. Almost all Ps prints cannot adjust the brightness and contrast, and the depth is not enough. Our Ps platen transfer paper can not meet the needs of plate making. The latter is relatively stable, but it is slower and cannot print mirrors and inverse maps. This is a problem that we cannot solve and is also a problem that we hope the digital printer manufacturers can solve.

Fourth, the printing of red-headed documents
Red-headed documents occupy a certain proportion in all printings of the organization's document printing system. With the digital printing presses, the red-headed documents for small-volume archives are very suitable for printing with digital printers, but problems arose. How to achieve color registration? The author believes that the following 8 methods can be used for reference.

(a) Buy a high-speed two-color digital press to solve the problem of color registration at one time. This method is the most efficient. But a two-color digital press with a speed of over 100 pages per minute. With millions of dollars or even more than two million yuan, many agencies are afraid to print.

(b) Either use an offset press to print the red head first, and then print on a monochrome digital printer, or print the black file with a monochrome digital printer. Then use the traditional digital machine to print the red head. However, these two methods are not satisfactory. After the red head was printed by an offset press, the paper was printed after passing the press. The moisture will be relatively large and will take longer to dry. Only through the digital press. And it is prone to paper jams, and it is easy to overprint. however. After printing by the high-temperature heating of the digital printer, the paper will lose 5% 0 to 20% moisture. Get the red on the traditional printing machine, the paper can not reach the humidity, easy to fold. Due to the different principles of traditional printing and digital printing, it is difficult to achieve a better convergence.

(C) Buy a machine that specializes in printing red ink, designed to print red heads. This method is very good, we will be the original one machine modified red ink, used to set the red head, fast, and not easy to fold. Therefore we recommend using this method.

V. Post-press binding
Mentioned above. After printing by high-temperature heating of the digital printer, the paper loses 15%-20% of the moisture, so the paper will become brittle. After being folded, it will easily break. The documents of the organization's document printing system are mostly saddle-stitched and printed after digital printing. The binding of paper to saddle stitches has caused great troubles. In addition, the problems of binding books and address book binding are also prominent. Therefore, the heating temperature of digital printing presses needs attention. The government document printing system is a market that cannot be ignored in digital printing. How to achieve the perfect docking between the digital printing and the office printing system is the goal of the company's document printing system and digital printing machine manufacturers. We sincerely hope that digital printing technology can better It is used by the government's document printing system and contributes to speeding up government affairs.

Reprinted from: China's printing and packaging e-commerce platform