On the vertical line somewhere without spray, the corresponding droplet charge. These droplets do not occur in the deflection electric field deflection according to the original direction of Objects Launched into the collector. The electric field-controlled ink-jet printer. Electric field to control the printer is in the electrostatic field with dripping to the formation of the droplet. Static pressure on the ink jet ink at the nozzle orifice to form a protruding crescent-shaped face. The ink does not outflow of the ink surface tension and hydrostatic pressure in equilibrium. If the crescent surface protruding at the front of the nozzle acceleration electrode on a high voltage (typically 2000V), will form an axial electric field masterpiece for the crescent-shaped surface, so that deformation, the formation of a drop of ink. And of course the core and basic function of this kind of green laser pointer is still the laser function.
The ink droplets are accelerated in an electric field direction, its speed is proportional to the accelerating voltage is inversely proportional to the droplet diameter. The formation of ink, the nozzle immediately be replenished from the ink container. This formed the chain of a bunch of ink drops. Charged droplet formation under different deflection electric field voltage of the X and Y directions, carry out deflection fell on the corresponding location of the records on paper, the formation of character. The headline inside of the piezoelectric ink-jet printer nozzle plate ink in the nozzle on, the next on each side of a piezoelectric crystal. Pulses applied in the village of transistors (print signals), an instantaneous pressure to deform in order to squeeze the ink cartridges emit a drop of ink on paper to form a small point. That means laser pointer becomes more and more popular.
Added to the voltage on the piezoelectric crystal is not less than 100V. Voltage level affect the droplet size. Change the pulse amplitude allows the droplet diameter changes 3-4 times. This printer can change the graphic information shades ie, gray scale. Ink-jet printer works. The inkjet printer can be divided according to the principle of solid ink and liquid ink-jet two (especially the latter more common), liquid ink-jet method can be divided into the bubble (canon and hp) and liquid piezoelectric ( epson). Bubble technology (bubble Jet) by heating the nozzle, the ink bubbles, spray on to the print media. Similarly, the thermal sensing hp inkjet technology (thermal inkjet technology) is the use of a thin-film resistors, ink ejected District will be less than 0.5% of the ink heated, forming a bubble. The flash disk usa green laser pointer has the function of flash disk.
The bubble at great speed (less than 10 microseconds) expanded to force the ink droplets from the nozzle. The bubble continues to grow a few microseconds, then disappear back into the resistor. When the bubble disappeared, the ink nozzles will be retracted. Then the surface tension will produce suction Pull the new ink added to the ink emitting area. Thermal Inkjet technology cycle technology is an integrated architecture out. In piezoelectric inkjet technology, the ink is ejected by a heat sensitive ink-jet technology similar to the nozzle, but the formation of drops through the narrow area of ink ejected to form. While emitting the narrowing of the region is to control by applying a voltage to one or more piezoelectric plate of the emitting region. It is infrared technology adopted by green laser .
The other hand, because the ink is ejected through the bubble, the direction and volume of the ink particles the size of bad ink prone to chemical changes at high temperatures, the unstable nature of the play of color authenticity would be to a certain extent; grasp the print lines the edge easily mixed, to a certain extent the quality of print, this is its inadequacies. The Micro Piezo print head technology using crystals pressurized discharge characteristics, stable at room temperature, the ink will be ejected. It has the ability to control droplet characteristics, easy to implement high-precision print quality of 1440dpi Micro Piezo inkjet without heating, the ink will not due to heat and chemical changes, it greatly reduces the requirements on the ink. This kind of green laser pointer is called the wireless presenter laser pointer.
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