The green laser beam green laser is more expensive

Another classification is a single function and multifunction. The printer now can be multi-functional focus with what fax, scan, plug a variety of digital memory cards. However, the use of fill ink or CISS best single machine as well for easy modification and maintenance. Understanding of classification, or easy to select models. Some of the features in the printer of the manufacturers. Since it is optional printer, knows in advance that some of the features optional targeted. Print head. The first is to recognize the nozzle. The inkjet ink-jet, the first spray, the spray word, indicating two things: First, the print used is in fact spray, spray - is not directly touch the paper. The operation of    green laser pointer   is easy and the use is very convenient.
Instructions from the nozzle (also called the print head) of the nozzle spray nozzle is the key to the printer capable of printing and print quality is good or bad, of course, the ink is also important, but only want to nozzle, from this point that, then the nozzle is the printer's CPU. Nozzle when the spray, when to stop spraying when the spray color, need to rely on the circuit to drive it, so there are circuits on the nozzle, this circuit printer board connected. In order to facilitate connection, the nozzle above, there is a circuit board. If the nozzle is fixed in the printer, the nozzle of the circuit board and printer using the cable plug-in, that is, the printer circuit board through the cable into the slot of the nozzle circuit board. It is the multiple function   laser pointer   .
If the nozzle can be taken down the nozzle circuit board and the printer uses the spring-contact, both the printer circuit board in front of the nozzle position is a spring contact nozzle board can be regular contact. Piezoelectric nozzle. Epson (EPSON) uses a Micro Piezo print head technology, voltage change, the crystal to vibrate to spray ink. Many tiny piezoelectric ceramic placed near the print head nozzles, piezoelectric ceramic in the altered role of the voltage across the stretch or contraction, the stretching vibration of the piezoelectric ceramics with the image when the image data voltage is applied on the piezoelectric ceramic information voltage changes. The first generation  green laser pointer  is a kind of laser pointer.
The ink in the steady state under normal temperature and pressure evenly and accurately spray ink, and effective control of droplet size, higher accuracy and resolution of color printout. Piezoelectric ceramic is timely, moderate shrinkage deformation is able to accurately print the core. Micro Piezo technology in front of the ink jet operation, the piezoelectric element, the first signal under the control of a slight contraction; components and then produce a larger extension of the droplet launch of the nozzle; moment, soon exited the nozzle in droplet components will shrink, neatly retracted liquid ink from the nozzle exit. In this way, the surface of the droplet precise control of spray droplet has the perfect shape and in the right direction. The green laser beam green laser is more expensive.
Of course, these are in theory, the entire injection process can not see, but by the above principle, the main use of micro Piezo print head technology ink without heating to emit, corrosion of the nozzle components is small, slow aging, the ink is no need heating also makes the color reproduction is better. The piezoelectric inkjet technology also has the regular shape of the dots, no sputtering, easy to control ink dot size and injection speed, accurate positioning and nozzle life expectancy, etc. Generally speaking, high-quality print images. Another point is that you can choose to use more of the chemical composition of the ink. However, the high cost of piezoelectric inkjet print head, so all the printheads and ink cartridges for the separation of structure, the cartridge above, without a nozzle, so the price of ink cartridges is relatively low. The receiver of the wireless presenter  led flash light  is small, exquisite and aesthetic.