Inkjet coding technology still dominates the coding market

At present, there are two major types of inkjet printers, ink jet printers and laser jet printers. Despite the sudden emergence of laser inkjet printers in recent years, traditional ink jet printers continue to optimize and upgrade, and still occupy a dominant position in the market.

More features in one

Large character printers are widely used in food packaging lot numbers, production dates, effective dates and bar code printing due to the large print characters. In general, large character inkjet printers have a printing height of 18mm-64mm, but the SX32-8000 series of multi-function printers developed by ConoWatch Matthews, known for its large character inkjet printers, achieve new breakthroughs in word height. Using a unique nozzle rotation technology, the height of the word can be freely adjusted from 5mm to 128mm, thereby expanding the printing range from large characters to small letters and high resolution inkjet printers. The advantage of this versatility is that the same printer can be installed on the same production line according to the user's characteristics, and the information printing of small characters and large characters can be completed at the same time.

With the development of the enterprise, there are more and more information requirements for the printing of the outer package. In addition to the factory information and the batch, there are also the bar code, the patent number, etc., which requires the printer to print multiple characters at a time. SX32-8000 series printers can not only print large and small characters, but also provide 32 nozzles with a single nozzle to achieve up to 5 lines of printing, while large character inkjet printers can only print one or two lines of information.

More stable and faster

In the production process of the product, the coding is only a very small part. However, due to the high failure rate of the printer, the number of manual maintenance is often more, and it often becomes a big trouble in the production process. Therefore, the stability of the operation is a very key element of the printer.

In order to improve the operational stability of the printers, the new PXR series inkjet printers introduced by Hitachi introduced an innovative artificial heart technology developed by Hitachi Medical Systems. Using this technical principle, the four valve pumps (corresponding to four human heart chambers), such as the ink pump, solvent pump, recovery pump, and circulation pump of the printer, operate independently and perform their duties. When the printer is working, the flow rate in the pipeline is very low, which is only about 1/2900 of a single pump system. This not only improves the stability, but also greatly reduces the volatilization of the solvent, lowers the cost, and also protects the working environment.

The measures for improving the stability of the series of equipment also include: the use of ink concentration control and viscosity control, and automatic adjustment, not affected by environmental temperature changes and boot time and other factors, so that the printer always maintain a perfect print quality; ink system Separated from the circuit control system to avoid mutual influences, the adoption of the above measures makes the PXR series products have extremely low failure rate and extremely outstanding operating stability.

Stability is the basis for achieving high-speed, high-quality printing. According to reports, PXR Hi-Speed ​​inkjet printer is called "the world's most high-speed inkjet printer", the maximum printing speed of up to 201 meters / minute (5 x 5 two-line printing) or 151 meters / minute (5 x 7 two line printing).

In addition, since the ink and solvent are highly volatile substances, they will produce more chemical toxic residues and pollute the environment. PXR series printers also have an exhaust gas collection pipe that can be connected to the hose to discharge the exhaust gas to the outdoors or in the water. The odor of ink and solvent contaminated the air at the production site, and the D440W series of PXR series is the first to comply with the RoHS directive and meet the environmental protection requirements.

As the latest model of Konovo Matthews in 2009, the KN2120/2130 inkjet printer has also achieved remarkable stability and reliability on the basis of integrating the latest international inkjet technology. The automatic cleaning of the nozzle, the automatic discharge of ink cleaning machine; a key switch machine control, instantaneous realization of a number of automatic detection fault early warning alarm function; to meet the various types of production and processing companies for a long time continuous work.

And its highest printing speed can reach 1076 words / second, can be used with high-speed pipeline coding operations. The ink circuit circulation system designed with patented technology does not pollute the ink, which greatly saves the cost of consumables and labor.

The nozzle is more optimized

The printer is composed of three parts: the controller, the nozzle and the ink supply system. The nozzle as the execution end is very critical. Pipe plugging and nozzle blockage will cause the printer to be unable to use normally. Therefore, the quality of the nozzle directly affects the printing effect and the code Machine operation stability.

When the printer is turned on or off every time, the first drop of ink or the last drop of ink ejected by the print head may not be in the normal state due to the ink circulation system, and cannot accurately reach the mark carrier or the recovery system. The nozzles are blocked, and the nozzles are left with oil, toner, and solvent. After the solvent evaporates, the dust in the air comes into contact with the nozzles and the recovery tank, further increasing the blockage. To solve this problem, KGK Jizhou inkjet printer developed a patented automatic nozzle sealing technology. When the printer just turned on, the nozzle did not perform ink jet until the internal ink circulation system was operating normally. Then the nozzle sealing device was turned on. Also, just before the shutdown, but the ink circulation system has not stopped working, the nozzle and The recovery tank has been closed so that it is effectively avoided that the first and last drops of ink remain on the nozzle. At the same time, since the entire ink path system becomes a closed system after the nozzle and the ink circulation system are closed so that the nozzle portion is no longer in contact with the air, the nozzle can be made less or not clogged.

In the normal production process, the spray head is exposed to the air. How to get as few impurities as possible into the ink system during this period is another important issue for the spray head technology. Hitachi inkjet printers use an external clean compressed air to achieve the nozzle blowing function to prevent external dust or water from entering the ink system through the recycling pipe to contaminate the ink. KGK uses low-vacuum recovery technology to reduce the amount of air drawn into the recovery system, thereby reducing the amount of debris that enters with the air. As the amount of air in the ink circuit system decreases, the evaporation rate of the solvent slows down. Can reduce 30-40%, not only environmental protection, but also extended the printer hardware (filters, nozzles) of the service life, saving consumables.

The overall protection level of Matthews nozzle is IP54, which means it can minimize the chance of dust and water entering the nozzle, and it can prevent the dust that cannot be seen by the naked eye and the water is not afraid. This makes the nozzle the most troublesome part. Internal contamination is avoided as much as possible in various production environments and is not blocked. And its nozzles all use the gem nozzle, the gem is very hard, strong wear resistance, high finish, the ink droplets in the fly out process is very small resistance, so that the font of the spray is smooth, soft and beautiful.

The above techniques mostly reduce nozzle clogging at the source, and the nozzle cleaning further solves the problem of nozzle clogging from the rear. Self-cleaning is currently used in many technologies, such as the above-mentioned Matthews KN2120/2130, Hitachi PXR series inkjet printers, and Domino's new generation A+ series inkjet printers. Take the Hitachi nozzle as an example. It has an independent solvent pump. Each time it shuts down, it automatically sprays the solvent to clean the nozzles and recover the pipes. The nozzle orifice can also be removed separately and placed in an ultrasonic container to completely solve the plugging problem.

Operation is more convenient

The more convenient operation of technology is a common appeal of all devices. From the traditional key input mode to the touch screen input, and then to the handwriting touch input, in order to improve the ease of use, the printer input mode continues to improve. The new K68 handwriting touch-type inkjet printer recently launched by Condyne PenCoin in Beijing has further improved the convenience of operation through the adoption of handwriting input functions. In addition, the device can be USB-connected, without the need to connect a computer, directly read the picture on the U disk for printing, and there is an access port that supports external data, which can be printed with a random code.

With the rapid growth of China's economy, the annual demand for inkjet printers in the country is around 10,000 or more, and it is growing at a rate of about 10%. The Chinese inkjet printer market has great potential. However, under such a huge potential market, most of them are occupied by foreign brands such as Imaje of France, Videojet of the United States, Domino of the United Kingdom, Wiley of the United Kingdom, New Jersey of the UK, and Hitachi of Japan. In recent years, domestic inkjet technology has been There is also sufficient development, but overall, in terms of stable performance, speed, environmental protection and other key technical aspects, there is still a need for further significant improvement.

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