Principle, function and purchase guide of the most

2022-07-23
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Principle, function and purchase guide of inkjet printer

1. Principle of inkjet printing

the principle of inkjet printing of small typewriter is as follows: under the action of high pressure, the ink enters the spray gun, and the spray gun is equipped with a crystal oscillator, whose vibration frequency is about 62.5khz. Through vibration, the ink forms a fixed interval point after being sprayed, and is charged at the charging electrode at the same time. The charged ink dots fly out after being deflected by the high-voltage electrode and fall on the sprayed surface to form a dot matrix on the hydraulic control box. The cut-off valve 1 should not be opened and placed. The ink dots without words are not charged, so they will not deflect and will be directly injected into the recycling tank for recycling. Ink dots printed on the surface of the substrate are arranged in a row. They can be full, empty or in between. The movement of the object perpendicular to the deflection direction of the ink dot (or the movement of the nozzle) can make the columns form an interval

the inkjet principle of the large typewriter is different from that of the small typewriter: the spray gun of the large typewriter is equipped with 7 micro solenoid valves that can only be opened and closed at high speed instead of crystal oscillators. The words or graphics to be printed are processed by the computer board, and a series of 7 groups of electrical signals are output to the 7 micro solenoid valves through the output board, so that the ink dots are sprayed on the sprayed surface to form a dot matrix and form words. Numbers or graphics

the font effect produced by the above two printing methods is to form Chinese characters in the form of dot matrix. However, another printing method that has recently entered China is becoming more and more recognized by users and is gradually replacing the dot matrix printing method. The new printing method adopts piezoelectric ceramic technology. 128 nozzles work at the same time in the range of about 2cm for printing. In recent years, the font effect produced by spray printing is very similar to that of printed matter, which can make the packaging effect to a higher level

2. Function and fault analysis of inkjet printer

according to the analysis of inkjet printing principle, the faults of small type printer and large type printer often appear on the spray gun. Both the crystal oscillator and the electric field deflection equipment used in the device may fail. The filter device and negative suction pump of the recovery tank shall also be replaced frequently. At present, most customers still prefer imported machines. They think their quality is up to the standard and their service is good. But its charge is also several times higher than that of domestic equipment

the new inkjet printer with piezoelectric ceramic technology mostly uses the method of natural flow of ink to the nozzle for printing, without pump, filter device, crystal oscillator and other components. The frequency of failure is much less. Regardless of font size, a machine can be fully competent to spray both large and small characters. However, due to the small jet pressure of the ink, the printing distance is relatively close. In principle, the closer the printing distance, the better the printing effect. Therefore, the inkjet printer using piezoelectric ceramic technology has poor inkjet printing effect on special-shaped objects, such as plastic belts and uneven materials. However, the surface of flat objects, such as cartons, packing cases, bottle caps and so on, is much more perfect than that of large and small type machines

3. How to select reliable inkjet printer products

for production enterprises, inkjet printer is an indispensable equipment on the assembly line, and the problem of production slippage has been solved. Inkjet printing is an important part of flow operation. If the failure rate of inkjet printing machine is high or the operation is complex, the whole production line will be affected from manufacturing to packaging, from production to sales. Ordinary people are often superstitious about the brand strength and quality of imported machines. In fact, from a technical point of view, there is not much difference between domestic machines and imported machines. After more than 10 years of research and development and market expansion, domestic machines are not inferior to imported machines, but also superior to imported machines in some aspects, such as Chinese font printing, simple and convenient operation, flexible and timely service, etc. It is recommended that users choose a suitable inkjet printer from a practical point of view

in addition, users also need to pay attention to the expandability of the inkjet printer if the hydraulic system of the tensile testing machine works normally. With the continuous development of the enterprise, many new requirements are bound to be added, which are often not taken into account when purchasing the machine. This requires that the machine has a good expansion space and can add new functions. For example, with the development of the company, random code, bar code printing and other functions need to be added

thirdly, the cost of consumables needs to be considered. In the actual production process, the cost of consumables cannot be underestimated. A person in charge of a pharmaceutical factory said angrily when the production volume was large: "the cost of consumables used every year can buy a car!" In fact, it's no exaggeration at all. The cost of each printing is one percent lower, and the annual printing will be thousands or even tens of thousands of yuan lower! Therefore, the machine with low cost of consumables should be selected when purchasing

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