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Novel high-resolution printing method based on satellite droplet

A satellite droplet and high-resolution technology, which is applied in printing and other fields, can solve problems affecting printing quality and ink flying, and achieve high-efficiency and high-resolution printing, improved printing resolution, and strong adaptability

Inactive Publication Date: 2019-07-23
张彦振 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the satellite droplet is much smaller than the main droplet, if its flight path is not effectively controlled, it will cause ink splashing and affect the printing quality

Method used

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  • Novel high-resolution printing method based on satellite droplet
  • Novel high-resolution printing method based on satellite droplet
  • Novel high-resolution printing method based on satellite droplet

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Embodiment Construction

[0016] The present invention is achieved through the following technical solutions. In the present invention, two nozzle holes of the same size are placed opposite each other, and the ink in the liquid storage chamber is squeezed out from the nozzle hole through the piezoelectric crystal; the volume of the liquid storage chamber is changed through the deformation of the piezoelectric crystal, so that the ink is squeezed out from the nozzle hole out; by controlling the deformation amount and deformation speed of the piezoelectric ceramics, the extrusion amount of the ink is enough to form a liquid bridge, but it is not separated from the nozzle hole; after the liquid bridge is formed, the piezoelectric crystal reversely deforms, and the liquid The ink in the bridge is sucked into the liquid storage chamber through the nozzle hole, causing the liquid bridge to break and form satellite droplets; then the satellite droplets are blown off the printing surface by an airflow of approp...

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Abstract

The invention relates to a novel high-resolution printing method in the field of ink-jet printing. According to the method, the phenomenon that satellite droplets are formed by fracture of a liquid bridge is utilized, so that the novel method for carrying out high-resolution printing by utilizing the satellite droplets is developed. The method is characterized in that the center lines of two sprayholes are aligned, the two spray holes are oppositely placed at a certain distance; two micro-piezoelectric crystals simultaneously extrude the ink in two liquid storage cavities from the spray holes, so that two droplets which are not separated from the spray holes meet at the middle position and are fused to form a liquid bridge; then, ink in the liquid bridge is sucked into the liquid storagecavities through opposite-direction deformation of the piezoelectric crystals, so that the liquid bridge is broken, the satellite droplets needed by printing are formed; and then, the satellite droplets are dropped onto a printing surface of which the liquid drops are blown off through a proper amount of air flow so as to complete printing. The size of the satellite droplets can be adjusted through the geometric size of the liquid bridge, the speed of the ink in the liquid bridge sucked into the spray holes and the physical properties of the ink. In addition to a double-spraying-hole working mode described above, the method can also adopt a single-spraying-hole working mode.

Description

technical field [0001] The invention relates to a new high-resolution printing method based on satellite droplets, which belongs to the technical field of inkjet printing, and specifically utilizes liquid bridge fractures to form satellite droplets whose size is much smaller than that of nozzle holes, and then utilizes airflow of appropriate size The satellite droplets are blown onto the printing surface to complete the printing. In this method, two nozzle holes of the same size are placed opposite each other, and the ink in the two liquid storage chambers is simultaneously extruded through two micro piezoelectric crystals, so that the two droplets that are not separated from the nozzle holes meet at the middle position and Fusion forms a liquid bridge; then, through the reverse deformation of the piezoelectric crystal, the ink in the liquid bridge is sucked into the liquid storage chamber through the nozzle hole, so that the liquid bridge is broken and the satellite droplets ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/14B41J2/045
CPCB41J2/04581B41J2/14201
Inventor 张彦振姜娜
Owner 张彦振
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