Comparison of the types and advantages and disadvantages of QR code inkjet printers

Two-dimensional code inkjet printer refers to the inkjet equipment used for two-dimensional code inkjet printing. At present, the inkjet printers commonly used for QR code assignment include ：Laser cij printer, thermal foam inkjet printer, UV inkjet printer, etc., two-dimensional code (two-dimensional barcode) as a brand-new information storage, transmission and identification technology, has been widely used in industrial production, two-dimensional Code printing can make products or packaging have anti-counterfeiting, traceability, marketing and other functions.

Two-dimensional code laser printing machine

The laser printing machine uses different lasers, and the laser beam is A marking device that uses light energy to physically or chemically change the surface of a variety of different materials, thereby engraving patterns, trademarks and texts and other permanent marks. Common laser marking machines include fiber laser marking machine, CO2 laser marking machine, ultraviolet laser marking machine and so on.

The laser printer has no consumables, has a long life, can operate in harsh environments, and is permanently marked on various metal and non-metal surfaces, and the marking effect is durable. Corrosion to prevent malicious tampering. The definition of the two-dimensional code produced by the laser printing machine is not as good as the high-resolution printer, and the laser coding may damage the surface of the printed object, and its printing speed is much slower than that of the ink printer.

Two-dimensional code thermal foaming inkjet printer

Thermofoam inkjet printer (TIJ inkjet printer) nozzle adopts semiconductor thin film technology, and uses laser process and high-precision deep layer technology to form multiple nozzle holes with a diameter of about 50μm. These nozzle holes are arranged in high density and the inkjet passes through The thin-film resistor is energized and heated to produce countless tiny bubbles in the ink. The bubbles gather into large bubbles at a very fast speed and expand, forcing ink droplets to be ejected from the nozzle; when the resistor has no voltage, it stops heating and no ink droplets are ejected.

The thermal foaming inkjet printer can print color content, the initial investment is low, but the cost of consumables in mass production is high, and in terms of printing quality, due to the thermal foaming spray The printer needs to heat the ink during use, and the ink is prone to chemical changes at high temperatures, its properties are unstable, and the color authenticity will be affected to a certain extent.

Two-dimensional code UV inkjet printer

UV The working principle of the cij printer is the same as that of the piezoelectric inkjet printer. It has hundreds or more piezoelectric crystals to control multiple orifices on the nozzle plate respectively. Through the processing of the CPU, a series of output signals are output through the driver board. The electric signal is given to each piezoelectric crystal, the piezoelectric crystal deforms, the volume of the liquid storage device in the structure changes suddenly, and the ink is ejected from the nozzle and falls on the surface of the moving object to form a dot matrix, thus forming characters and numbers. Or graphics.

UV inkjet printer combines the advantages of inkjet printing technology and ultraviolet curing technology, not only has the convenience of variable data online inkjet technology, but also has high adhesion UV The efficiency advantage of curing, UV ink can be quickly dried after being irradiated with a certain range of ultraviolet light at a certain frequency, so that the ink has the characteristics of quick-drying, good adhesion, no clogging of the nozzle, and easy maintenance. The initial investment cost is relatively high. The market price of the complete machine ranges from 50,000 to 100,000. It is a new type of coding equipment developed in recent years. In terms of technical maintenance, it is difficult for non-professional engineers to control, and improper operation can cause damage to high-precision nozzles.

In addition to the above three types of inkjet printers, other small character inkjet printers, thermal transfer cij printers and large character inkjet printers are rarely used in QR codes. Jet printing, because in terms of jet printing accuracy, these three devices have low jet printing resolution and cannot meet the requirements of high recognition rate for 2D code jet printing.

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