Exploring the historical development of inkjet printing technology
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There are more than 20 ways of inkjet printing, but the basic principle is to first generate small ink droplets and then guide them to the set position. It can be roughly classified into continuous and on-demand. The so-called continuous inkjet method produces ink droplets in a continuous manner regardless of the printed or non-printed pattern, and then recycles or disperses the non-printed ink droplets; while the on-demand inkjet is only in the printed portion. Only ink droplets are produced. Inkjet printing can be divided into black and white inkjet and color inkjet according to printing color. Black and white inkjet printing uses only a single ink, so the machine structure and ink system are relatively simple, while color inkjet printing is relatively complicated. At present, the resolution of inkjet printing can reach 40 dots/mm, and the quality is close to the photographic image.
The inkjet digital printing press is very versatile, and it has a general-purpose model, but its speed and resolution and color reproduction area are greatly different depending on the purpose of use. There are not many suppliers of digital inkjet printers for continuous inkjet. There are two main types of equipment, one is high-speed printing and the other is high-quality color proofing. The limited number of suppliers of continuous inkjet printers is due to the necessity of manufacturing inkjet heads from companies that offer complete solutions. On-demand inkjet is different. There are many OEM suppliers of inkjet heads on the market. On-demand inkjet heads can be mass-produced, while continuous inkjet heads are more complex and difficult to mass-produce.
Inkjet printing is a new non-contact, pressure-free, non-printing printing technology that prints information stored on an electronic computer into an inkjet printer. It also has the common feature of unprinted digital printing, enabling variable information printing.
The history of inkjet printing can be traced back to 1884. American C·H·Richard put water in the syringe and squeezed the needle to fly out of the droplet, which was inspired. If this flying liquid is charged, electricity control When it is dropped, an image can be formed on the paper, which is called fog printing. The earliest development of Ink-jetPrinting was in 1878. By 1951, Siemens patented the technology for converting liquid ink into ink droplets. At that time, the needle and ink had problems and the effect was not good until 1960. Formally entered the practical stage.
In 1964, the size of the ink droplets and the rate of ejection were controlled by a special machine. This was the prototype of the inkjet machine. Until 1967, Hertz developed a continuous inkjet printer, which is currently in the industry. ContinuousInk-jetPrinting used on. In 1972, Siemens introduced the Piezoelectric (piezoelectric) Drop-on-DemandInk-jetPrinting. In 1979, Canon introduced the Drop-on-DemandInk-jetPrinting of Thermal, but called BubbleInk-jetPrinting. In 1984, HP also launched the Drop-on of Thermal. -DemandInk-jetPrinting, the above is the history of Ink-jetPrinting. This process began to be applied to bar code processing and product serial number printing 20 years ago, but the resolution was not satisfactory at the time. Until the last 10 years, the quality of inkjet printing has made rapid progress.