10 Questions About Printheads You Need To Know Before Purchasing UV Printer

When you are buying a new UV Printer, you should ask some basic questions about its printhead.

1. Which brand and which type of printhead does the printer use?Most sellers will usually tell you the brand of the printhead when you ask for the printhead, not the detailed model of the printhead.For example, Ricoh nozzles commonly used in the market, Ricoh GEN5 nozzles and Ricoh GH2220 nozzles, Ricoh GEN5 nozzles are divided into water and oil, long and short lines, two channels and four channels.Second, is this printhead designed for solvent ink, or is it designed for UV ink?Some printheads were not originally made to print UV ink.

2.An early example of Epson sprinklers was an example. At the time, Epson itself did not produce UV-curable printers. Epson only produced water-based and solvent-based printers for photo printers and art. This does not mean that they cannot spray UV-curable inks, which only means that the nozzles may require special inks.Therefore, this question helps you understand whether the printhead is designed from the ground up for printing UV ink.

3. How many other printers use the same printhead? Do they have any questions?Konica Minolta nozzles, Ricoh nozzles, Kyocera nozzles, Xaar nozzles and starlight nozzles are all piezoelectric printheads. These are industrial strength piezoelectric printheads compared to Epson piezo printheads.

4. How many nozzles are there for each printhead?This can help you understand the speed or speed of your printer.

5. What is the total number of nozzles in the printer?The nozzle has a single nozzle that can only spray one color of the single color nozzle, and one nozzle can spray multiple colors of the multi-color nozzle.Take the Ricoh GEN5 nozzle as an example. It has two channels and four channels. When using it on a machine, you can print only one color for one nozzle, or two colors for one nozzle (two channels and four channels). Yes, you can print four colors (four-channel nozzle) in one nozzle.

6. How many printheads are there for each color?This will explain more about how slow or how fast your printer can eject ink.

7. How many skins are the ink droplets on the nozzle? Is there a variable droplet capability?The smaller the droplet, the better the print quality. However, a smaller drop size can slow down the printhead system. Similarly, printheads that produce larger drop sizes do not provide the same print quality, but print speeds tend to be better.

8. Is there a special white ink or varnish nozzle? Are they the same model as the CMYK printhead?Because the use of larger nozzles can make white inks better, some printers only have white ink to have "white droplet size is good". Other printers use the same header for any and all colors. For varnish, it is best to ask experienced printer operators and printer designers which head is best for varnish. Processing varnish is not as easy as handling ink. On a comparable basis, make sure your white ink has a recirculation system (otherwise white particles will precipitate and clog the nozzles).

9. If this piezoelectric head fails, who is responsible for paying the replacement head? What are the most common causes of printhead failure? What are the causes of the warranty? Which printhead failure causes are not covered by the warranty? Is there a limit to the number of printhead failures covered per unit time?In the case of a user-induced failure, most manufacturers will ask the user to pay for the replacement of the printhead. Most faults are indeed user errors, the most common cause being head impact.

10. What is the print height of the nozzle? Can I avoid nozzle impact?Impact is the most common cause of premature nozzle damage (improper media loading can cause bending, media rubbing onto a fragile nozzle plate, or not properly passing through the printer). A head impact can damage only a few nozzles, or it can damage the entire nozzle. Another reason is the continuous flushing, which can damage the nozzle system.