Types and principles of automatic online inkjet printers

Full-automatic online inkjet printer refers to the automatic inkjet equipment for the production line of supporting enterprises to perform coding operations. Fully automatic online inkjet printers include small character inkjet printers, flying laser inkjet printers, thermal foam inkjet printers, and thermal inkjet printers. Transfer inkjet printers and high-resolution UV inkjet printers, automatic inkjet printers do not include handheld inkjet printers and static laser inkjet printers. 1. Small-character inkjet printer: CIJ inkjet printer, which uses the charged deflection method of the ink to deflect the ink dots out of the normal flight path, and shoots them to the surface of the target printed matter to form a dot matrix, thereby forming characters, numbers or Graphics. Its printing speed is fast, and the single-line printing can reach 300 meters per minute. Taking the date printing of mineral water bottles and beverage bottles as an example, the printing speed of small characters can reach about 1,000 bottles per minute, due to the limitation of printing height and accuracy , Small character inkjet printers are mainly used for simple digital inkjet codes such as production date and batch number. 2. Laser printer: Laser marking machine, which uses different lasers to strike the laser beam on the surface of various materials. The surface material can be physically or chemically changed by light energy, thereby engraving patterns, trademarks and texts, etc. Marking equipment for marking content. The laser printer has no consumables and has a long life. It can operate in harsh environments and can be permanently marked on various metal and non-metal surfaces. The marking effect is corrosion-resistant and prevents malicious tampering. However, its inkjet coding accuracy is not as high as that of high-resolution inkjet printers, and may cause damage to the surface of the printed object. In addition, its inkjet coding speed is much slower than inkjet printers. 3. Thermal foam inkjet printer: a high-resolution inkjet printer that uses thermal foam inkjet technology. Its nozzle adopts semiconductor film technology and uses laser processing and high-precision deep technology to form multiple inkjet printers with a diameter of about 50μm. These nozzle holes are arranged in a high density. The inkjet is energized and heated by the thin-film resistor, so that the ink produces countless tiny bubbles. The bubbles gather into large bubbles at a very fast speed and expand, forcing ink droplets to be ejected from the nozzle; When the voltage is applied, the heating stops and no ink droplets are ejected. It can print color content, low initial investment, but high cost of consumables in mass production, and in terms of printing quality, because the thermal foam inkjet printer needs to heat the ink during use, and the ink is prone to chemical changes at high temperatures , The nature is unstable, the color authenticity will be affected to a certain extent. 4. Thermal transfer inkjet printer: The principle is to place the ribbon between the inkjet print head and the product to be coded. The inkjet print head will move a certain distance on the ribbon and the surface of the product at the same time, mainly in flexible packaging. Printing content on films and labels has a small application range and is usually only used in the packaging and printing industry. 5. High-resolution UV inkjet printer: Its working principle is the same as that of piezoelectric inkjet printer. It has hundreds or more piezoelectric crystals to control multiple nozzle holes on the nozzle plate. Through the processing of CPU, A series of electrical signals are output to each piezoelectric crystal through the drive board. The piezoelectric crystal is deformed. The volume of the liquid storage device in the structure will suddenly change, and the ink will be ejected from the nozzle and fall on the surface of the moving object to form a dot matrix. , So as to form text, 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 the efficiency advantage of high adhesion UV curing.