Digital Press Technology Trends

Digital presses can be divided into two types: digital presses without a plate and digital presses with a plate.
The common feature of unprinted digital printing is the realization of variable information printing. The current non-printing press can be divided into three ways from a large aspect.
Unprinted digital printing machine 1. Electrophotographic method First, the photoconductor (OPC) is fully charged, then the image is taken with a laser, etc. to generate an electrostatic latent image, and then the toner is covered with an electrostatic latent image, and finally the toner image is transferred. Printed on paper. There are two types of toner: powder and liquid. At present, powdery toner is mostly used.
2. Coagulation method This printing press is generally a printing color group, such as connecting a plurality of groups according to the necessary number of colors, which constitutes a multicolor printing press. With the addition of an inverting device in the middle, it is possible to print on both sides, which makes it suitable for printing in various applications. Moreover, the image quality of prints is close to continuous tone images.
3. inkjet inkjet printer is composed of a number of nozzle dot matrix structure, by receiving the computer's layout information, the ink is ejected from a very fine nozzle, and use the electric field to control the inkjet flight direction, generate images and graphics on the paper. There are also ink jet printers in which ink jetting and green pellet formation are achieved by means of charging and pressurizing.
The use of inkjet digital printers is very different in speed, resolution and color reproduction area.
Digital presses with digital plates There are plate digital presses that must have preprinted plates on the plate cylinders, except that they are made directly on the printing press. Compared with traditional printing presses, although this type of printing press also needs a printing plate, since it is a direct plate making machine, only one printing machine can complete the production process from data to printed matter, which saves equipment. , time, materials, and reduced production costs.
1. The main representative model of special-purpose printing press special-purpose printing press is True Press, its basic structure is on the four-color printing machine with double-diameter cylinder type structure, equipped with Mitsubishi Silver Digi Plate direct plate making and developing equipment, Composition of a composite structure of the printing press.
Because Mitsubishi's Silver Digi Plate is used for direct plate making, the cost is lower, and printing inks of various properties can be selected according to different needs. Therefore, this printing press is closer to the printing conditions of traditional printing in terms of use conditions. Moreover, this plate can use UV ink to solve a series of problems caused by the long drying time of the ink in the past printing.
2. Traditional Printing Press The main representative of the traditional printing press is Heidelberg Speed ​​MasterD l74. This model is based on the traditional printing machine Speed ​​Master 74, therefore, can use PS plate or plate making method with a resolution of 2400dpi, the plate is used by Press Tek's PEAR Lgold, and the same type of Plate material.
The above-mentioned digital printers print the layout information in digital form. Therefore, how the network or database data is correctly transmitted to the printer is a key issue. In the entire process of data transmission, the bottleneck must be clearly identified in order to increase production efficiency. It is necessary to conduct research in the following areas in the future:
1. The digitization of the entire layout of the printed matter;
2. Digitization of analog negatives;
3. Electronic matching, electronic binding;
4. The speed of calculation time;
5. Data processing adapted to the data volume;
6. The preservation of layout data;
7. The use of the database.