Analysis of the most popular digital printing mach

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Analysis of digital printing machines without and with plates

digital printing machines can be divided into two types: digital printing machines without plates and digital printing machines with plates

the common feature of plate free digital printing is to realize variable information printing. At present, the plateless printing press can be divided into three ways

plateless digital printer

1. electronic photography method

first fully charge the photoreceptor (OPC), then use laser to take light from the image, generate electrostatic latent image, then cover the toner on the electrostatic latent image, and finally transfer the toner image to the paper. There are two kinds of toner, powder and liquid. At present, powder toner is mostly used

2. electrocoagulation mode

this kind of printing machine is generally a printing color group. If multiple groups are connected according to the necessary color number, it constitutes a multi-color printing machine. If a turnover device is added in the middle, two-sided printing can be realized, so it can be suitable for printing for various purposes. Moreover, the image quality of the printed matter is close to that of the continuous tone image

3. inkjet mode

the inkjet printer is a dot matrix structure composed of many nozzles. By receiving the layout information of the computer, the ink is emitted from the very thin nozzle, and the flight direction of the ink jet is controlled by the electric field to generate images and graphics on the paper. In some inkjet printers, the ink jet and the formation of green particles are realized by charging and pressurizing

the inkjet digital printer is very useful. Its speed and resolution Figure 6 Goldilocks pp-lgf thermal and oxygen aging performance and color reproduction area are very different

printed digital printer

printed digital printer must be equipped with pre prepared plates on the plate cylinder, but such plates are directly made on the printing machine. Compared with the traditional printing machine, although this printing machine also needs to print plates, because it 5. Regularly checking the transmission of the sprocket is a direct plate making in the machine mode, only one printing machine can complete the production process from data to printed matter, which not only saves equipment, time and materials, but also reduces the production cost

1. special printer

truepress is the main representative model of the special plate printing machine. Its basic structure is a four-color printing machine with double diameter cylinder structure, which is equipped with Mitsubishi silver digiplate direct plate making and development equipment to form a composite structure printing machine

as the Mitsubishi silver digi plate is used for direct plate making, the cost is low, and printing inks with various properties can be selected according to different needs. Therefore, the use conditions of this printer are closer to the printing conditions of traditional printing. And this kind of plate can use UV ink, which solves a series of problems caused by long drying time of ink in previous printing

2. traditional printing press

the main representative model of traditional printing press is Heidelberg Speedmaster dl74. This model is based on the traditional printing machine Speedmaster 74. Therefore, it can use the output result of P about the electronic universal tensile machine s plate or adopt the direct plate making method, with a resolution of 2400dpi. The plate is made of pearlgold of Presstek company, and the same kind of plate that is difficult to determine the applicability of the fixture

all the digital printers mentioned above receive the layout information in digital form for printing. Therefore, how to correctly transmit the network or database data to the printer is a key problem. In the whole process of data transmission, we must first identify the bottleneck to improve production efficiency. In the future, it is necessary to carry out research in the following aspects:

1. digitalization of the entire layout of printed matter

2. digitalization of analog negative

3. Electronic page distribution and electronic binding

4. high speed of computing time

5. data processing corresponding to data volume

6. saving layout data

7. application of database

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