The difference between thermal foam inkjet printer and piezoelectric inkjet printer

The main difference between thermal foam inkjet printers and piezoelectric inkjet printers is in the technology they use to eject ink droplets onto the printing surface. 

Thermal foam inkjet printers use heat to activate a small crystal in the ink cartridge that causes the ink to expand and form a droplet. This droplet is then forced out of the print head and onto the printing surface. These printers are typically less expensive and can print at faster speeds, but they may be less accurate and the ink may not be as durable.

Piezoelectric inkjet printers, on the other hand, use a small crystal in the print head that vibrates at a very high frequency when an electrical charge is applied. This vibration causes the ink to be ejected from the print head in a precise manner, producing high-quality, sharp images. These printers are typically more expensive and may be slower, but they offer greater accuracy and durability of the printed image.

Overall, the choice between a thermal foam inkjet printer and a piezoelectric inkjet printer will depend on the specific needs of the printing application, such as the desired image quality, print speed, and cost.