The research focus of push-pressure piezoelectric inkjet technology from the 1990s to the beginning of the 21st century has always been on the piezoelectric element, electrode leads and other related structural improvements in pursuit of miniaturisation and high resolution, and now the focus of the research is more in favour of the improvement of the drive control.
Piezo element stacking method, as the market demand for small-size inkjet printheads and high print resolution increases, the requirements of inkjet printheads in the multiple piezoelectric elements to achieve a high degree of integration of the arrangement, the piezoelectric elements of the layer stacking method can affect the degree of deformation of the vibration plate, which affects the inkjet characteristics of the inkjet printheads, and the piezoelectric elements of the interference between each also affects the inkjet characteristics of the inkjet printheads.
The arrangement of piezoelectric element, the early push type piezoelectric element is connected to the piezoelectric element on the support block for lateral arrangement, and later developed into each piezoelectric element is independently manufactured, and independently set, both ends are the free end of the piezoelectric element. At the same time, it should be noted that the piezoelectric element layout, set position, connection and the structure of the piezoelectric element itself, directly affects its driving mode and driving efficiency of the pressure chamber.
We would like to introduce to you an inkjet printer from our company, the model is LQ-MD UV1450 Digital Inkjet Printing Machine
-Print unit: Ricoh G5 print-head
-Inkjetting barcode and two dimensional code
-Detection system is Line array detection system
The improvement of the electrode lead, the electrodes of the transversely laminated piezoelectric element are led through a single side edge thereof, so that the piezoelectric element achieves a stable connection with the driving circuit, and the independently disposed piezoelectric element has two free ends. Through the improvement of the electrode leads, the stability of the piezoelectric element and the circuit can be improved, the accurate connection can be made to avoid short-circuiting and driving faults, and the accuracy of printing by the inkjet print head can be improved.
Improvements to vibratory membranes can be made to improve the sealing and stability of the bond, preventing peeling of the vibratory membrane and leakage of the fluid. We can form an organic titanate film on the vibration plate and substrate, which can prevent the vibration plate, substrate and interlayer from peeling off, and improve the durability and reliability of liquid injection; or we can form one aluminium chelate film over the whole area of the substrate, and another aluminium chelate film over the whole area of the vibration plate, and the two layers of aluminium chelate film enhances the adhesion between the stacked layers, eliminates the risk of liquid leakage, and improves the reliability of liquid discharge.
Piezo assembly and positioning, the assembly and positioning of the inkjet print head is mainly the assembly and positioning of the piezo elements, the accuracy of the piezo assembly will directly affect the drive to the pressure chamber, and thus affect the liquid jetting performance. The piezoelectric head drive structure is assembled directly to the head structure by positioning the reference section and reference plate at the side base. This assembly method improves the precision of piezoelectric element assembly, and thus improves the jetting performance of the inkjet print head. Alternatively, guide grooves running through each piezoelectric drive member are provided prior to the joining of the parts, thereby enabling positioning.
Drive control, by controlling the drive circuit, different effects can be achieved, such as connecting a switching element to the other terminal of the electrostrictive element, which is capable of conducting time-varying signals to the first pole and the other pole, and connecting in parallel with this switching element to improve efficiency; when controlling ringing and overshoot, moving the actuator at a speed higher than the intrinsic frequency of the actuator's fundamental mode, thus suppressing aftershocks The actuator is moved at a speed higher than the inherent frequency of the basic mode of the actuator to suppress residual vibration.
Inkjet print head is the core technology in inkjet printing equipment, in which piezoelectric inkjet print head is most commonly used in droplet ejection technology, and push-pressure droplet ejection technology is a very important branch of piezoelectric inkjet printing technology, which has a wide range of applications in daily life, electronic product manufacturing, biotechnology and many other industries. If you have a need for inkjet printers, please contact our company in time.
