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Inkjet printing head cleaning device and cleaning method thereof

A technology of inkjet print head and cleaning device, which is applied in printing and other directions, can solve the problems of reducing production efficiency, reducing the service life of inkjet print head, increasing production cost, etc., so as to prolong the service life, alleviate the increase of cleaning frequency, and ensure The effect of production efficiency

Inactive Publication Date: 2021-02-05
GUANGDONG JUHUA PRINTING DISPLAY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to prevent the print quality from being affected, the cleaning of the inkjet print head can only be performed more frequently, which will reduce production efficiency, and at the same time, it will also reduce the service life of the inkjet print head, thereby increasing production costs

Method used

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  • Inkjet printing head cleaning device and cleaning method thereof
  • Inkjet printing head cleaning device and cleaning method thereof
  • Inkjet printing head cleaning device and cleaning method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] see image 3 As shown, this embodiment provides an inkjet printing head cleaning device 10 .

[0039] The inkjet print head cleaning device 10 includes a cleaning tank 100 and a solvent vapor generator 200 . The cleaning tank 100 is used for supplying the first solvent (attached image 3 , 4 shown in A) in full bloom. Solvent steam generator 200 is installed on the cleaning tank 100, and the nozzle of solvent steam generator 200 faces in the cleaning tank 100, and solvent steam generator 200 is used for forming the second solvent into solvent vapor (attached image 3 , 4 shown in B) and ejected from the nozzle. During cleaning, the first solvent is the carrier solvent of the printing ink after the solute is removed, and the first solvent is the same as the solvent component of the ink used by the print head during inkjet printing. The surface tension of the second solvent is smaller than the surface tension of the first solvent.

[0040] When cleaning the print h...

Embodiment 2

[0051] This embodiment provides a method for cleaning an inkjet printing head.

[0052] The inkjet printing head cleaning method comprises the steps:

[0053] (1) Cleaning by immersing the print head 20 in a first solvent, the first solvent is the same as the solvent composition of the ink used by the print head during inkjet printing.

[0054] (2) The second solvent is formed into a solvent vapor and sprayed parallel to the liquid surface direction of the first solvent, and the surface tension of the second solvent is smaller than that of the first solvent. The second solvent is at least one of isopropanol, ethanol, methanol, n-octane, n-hexane and acetone.

[0055] (3) Rotate the print head 20 so that its nozzle plane 21 forms an acute angle with the liquid surface of the first solvent, and the acute angle α (such as image 3 shown) is 20°-30°, and the opening at the acute angle faces the direction of solvent vapor ejection.

[0056] (4) The print head 20 moves along the ...

Embodiment 3

[0060] This embodiment provides a method for cleaning an inkjet printing head.

[0061] The inkjet printing head cleaning method comprises the steps:

[0062] (1) The print head 20 is immersed in a first solvent, which is the same as the solvent composition of the ink used by the print head during inkjet printing. The print head 20 is cleaned by ultrasonic treatment. The vibration frequency of ultrasonic treatment is 20kHz-50kHz, and the power density is 0.3W / cm 2 Above, the cleaning time is 180s-300s.

[0063] (2) The second solvent is formed into a solvent vapor and sprayed parallel to the liquid surface direction of the first solvent, and the surface tension of the second solvent is smaller than that of the first solvent. The second solvent is at least one of isopropanol, ethanol, methanol, n-octane, n-hexane and acetone.

[0064] (3) Rotate the printing head 20 so that the nozzle plane 21 forms an acute angle with the liquid surface of the first solvent, the acute angl...

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Abstract

The invention discloses an inkjet printing head cleaning device and a method thereof. The inkjet printing head cleaning device comprises a cleaning tank and a solvent steam generator, wherein the solvent steam generator is installed on the cleaning tank, a spray head of the solvent steam generator faces the interior of the cleaning tank, and the solvent steam generator is used for enabling a second solvent to form solvent steam. The method comprises the following steps: (1) a printing head is immersed into a first solvent for cleaning; (2) solvent steam is formed from the second solvent, and the solvent steam is sprayed in a direction parallel to the liquid level of the first solvent; (3) the printing head rotates to form an acute included angle between the nozzle plane of the printing head and the liquid level of the first solvent, wherein the acute included angle faces the solvent steam spraying direction; and (4) the printing head moves in the direction of the nozzle plane so that the nozzle plane can make contact with solvent steam in sequence, and the nozzle plane is cleaned. The inkjet printing head cleaning device can effectively reduce the cleaning frequency of the printinghead, improve the production efficiency, prolong the service life of the printing head and reduce the production cost.

Description

technical field [0001] The invention relates to the technical field of inkjet printing, in particular to an inkjet printing head cleaning device and a cleaning method thereof. Background technique [0002] Inkjet printing technology is a non-contact, high-efficiency, and modern manufacturing technology that enables precise material deposition. With the continuous development of inkjet printing technology, its application has expanded from the pure printing field to frontier fields such as electronic manufacturing, life science and additive manufacturing. [0003] The clean state of the nozzle plane in inkjet printing is shown in Fig. 1(a). During the inkjet printing process, the ink is prone to overflow and flow at the nozzle, causing the ink to remain on the nozzle plane, as shown in Figure 1-(b), this phenomenon is called "hanging liquid". When the solvent in these hanging liquids starts to volatilize, solids will be deposited on the nozzle plane, as shown in Figure 1-(c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/165
CPCB41J2/1652B41J2/16552B41J2002/16567
Inventor 林杰
Owner GUANGDONG JUHUA PRINTING DISPLAY TECH CO LTD
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