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Inkjet Sublimation Printer-How Does Piezo Print Head Work?

The working principle of the inkjet sublimation printer is to set four colors (cyan, magenta, yellow and black or CMYK) solid dyes (called color rollers) on the photosensitive drum, which is equipped with tens of thousands of semiconductor heating element

When the temperature of the heating element rises to a certain degree, it can directly convert the solid dye to gas (the process of not liquefying solids into gas is called a sublimation printer, so the printer is called sublimation printer), and then the gas is sprayed onto the printing medium. Each semiconductor heating element can be adjusted to 256 temperatures to adjust the color ratio and intensity to obtain continuous color true color photo effects.

inkjet sublimation printer

Micro-piezo technology divides the control of ink droplets of digital sublimation printer into three stages: before the inkjet operation, the piezoelectric element first shrinks slightly under the control of the signal; the second piezoelectric element first shrinks under the control of the signal . The element then produces a larger extension, pushing the droplet out of the nozzle; once the droplet leaves the nozzle, the element shrinks again, pulling the ink volume cleanly out of the nozzle. In this way, the surface of the droplet can be precisely controlled, and each droplet has an ideal shape and a correct flying direction.

A micro-piezo inkjet system is equipped with a transducer on a nozzle containing ink. The transducer is controlled by a print signal to control ink injection.

inkjet sublimation printer

By using the change of the micro-voltage to control the inkjet, not only the disadvantages of the thermal bubble inkjet technology are avoided, but also the direction and shape of the inkjet can be accurately controlled.

The print head of a sublimation transfer printer uses a piezoelectric crystal on the back of the miniature cartridge holder. Applying a current to the crystal causes it to pop inward. When the current is interrupted, the crystal bounces back to its original position and ejects a small drop of ink through the nozzle. When the current returns, pull the crystal back and forth, ready to spray with the next drop of ink.