Thermal Inkjet Printing Technology (TIJ) Introduction
There are two main types of current inkjet printing technologies: thermal inkjet technology and micro-piezoelectric technology. Most manufacturers use thermal inkjet technology, and a small number use micro-piezoelectric technology.
Thermal ink-jet printing technology was discovered by HP technicians in the 1970s, and the first thermal inkjet printer was invented in the laboratory in 1979. This technology has been adopted by HP, and HP technicians are constantly developing new technologies based on thermal inkjet printing technology. For example, color tiering technology and JetExpress technology are applied to HP products to continue to maintain Hewlett-Packard's leadership in the industry.
Thermal inkjet printing technology rapidly heats the ink through the cathode. When the ink film is heated to about 340°C, a vapor bubble is formed and the ink is accurately ejected onto the paper.
720dpi600dpi 180 nozzles per inch 600 nozzles per inch Pressure Sensing Printheads (720/180 = 4 passes) Thermal inkjet printheads (600/600 - 1 pass)
Print Mode Technology Assures Design Flexibility Because thermal ink jet printing technology has small droplets and high density, piezoelectric technology has a low density, the use of thermal inkjet technology to print images that can be completed once and the use of micro piezoelectric technology requires four All over, a lot of time is wasted.
Thermal inkjet printing technology contrasts micro piezoelectric inkjet printing technology
The main features of thermal inkjet printing technology:
● Since TIJ technology works without mechanical movement, with the rapid development of semiconductor integration technology, more nozzles can be integrated in each TIJ print head to achieve a higher nozzle density, which provides the technical basis for TIJ's printing speed increase. , While the micro-piezoelectric printing due to the need for mechanical movement during the work, the nozzle density is difficult to increase, set an insurmountable obstacle to increase its printing speed.
● Due to the large number of nozzles, there are spare nozzles as spare nozzles to ensure high printhead performance. For example, HP uses fault-tolerant printing technology.
● Since the TIJ itself is used for inkjet printing by generating bubbles, the gas entering the print head in a real-world environment will not have any effect on it, but it will cause fatal damage to the micro piezoelectric print head.
● With the rapid development of semi-conductor technology, the nozzle density of TIJ's print heads is getting higher and higher, but the cost is getting lower and lower. Like in the HP modular ink system, the print head has become a long-life, low-cost, common Consumer products, users can replace the new print head according to the use of their own, long-term guarantee the high performance of the print head. Micro Piezo technology's print head, due to its high cost, has to be used as a permanent or semi-permanent component. With the passage of time, its performance will continue to decline. Once it is replaced, professional technicians will be required. Support, and the cost is also affordable for the average user.
