Bubble removal system in ink for white ink printers

Abstract

The present application relates to inkjet printing technology field, specifically is for white color ink printer ink bubble removal system, including color ink module and white ink module, all through inkjet printing module realizes ink supply and inkjet, the inkjet printing module includes main ink barrel, secondary ink box and nozzle, the secondary ink box includes first chamber and second chamber, the first chamber and the second chamber are connected with the main ink barrel and the nozzle through pipeline respectively, the peristaltic pump is arranged between the first chamber and the second chamber, the degassing lung is also arranged between the first chamber and the nozzle, the degassing lung includes a degassing lung negative pressure interface, is connected with the degassing lung negative pressure source outside by the interface.This system not only simple structure, easy to build, can carry out white and color printing, in the effective removal of air bubble in ink, can also prevent the occurrence of ink sedimentation, can effectively improve the printing quality, and can prolong the service life of inkjet printer.

Description

Technical Field

[0001] This invention relates to the field of inkjet printing technology, and more particularly to an ink bubble removal system for white color ink printers. Background Technology

[0002] Inkjet printers work by spraying liquid ink, which is atomized into fine particles through nozzles, onto a substrate. The ink then flows from the ink bottle into the ink cartridge, and from the cartridge to the print head for printing. Traditional inkjet printers have only four print heads, corresponding to four colors: cyan, magenta, yellow, and black. By adjusting the ratio of these four colors, various colors and tonal effects can be created.

[0003] Since conventional inkjet printers print on paper, which is white, traditional printers cannot print on white paper. This limits the application scenarios of inkjet printers, such as printing white patterns or text on colored media.

[0004] In addition, traditional ink cartridges are single-chamber cartridges. Since the ink enters the cartridge under pressure from the ink bottle, the impact force often creates a surge in the cartridge, which can introduce air and form bubbles in the ink. This makes the ink entering the print head unstable and seriously affects the printing effect of the print head.

[0005] On the other hand, ink will form sediment if stored in the ink cartridge for a long time. If it is not shaken well before printing, it will not only cause color difference, but may even cause the print head to become clogged.

[0006] Therefore, a new technical solution is urgently needed to solve the above-mentioned technical problems. Summary of the Invention

[0007] The purpose of this invention is to overcome the problems of the prior art and provide an ink bubble removal system for white inkjet printers. This system solves the technical problems that traditional inkjet printers cannot print white, that ink bubbles in the pipeline affect print quality, and that ink easily forms sediments that cause printhead blockage.

[0008] The above objectives are achieved through the following technical solutions:

[0009] A system for removing air bubbles in ink for a white inkjet printer includes a color ink module and a white ink module. The color ink module is used to provide color inkjet printing, and the white ink module is used to provide white inkjet printing. Both the color ink module and the white ink module achieve ink supply and inkjet printing through an inkjet printing module.

[0010] The inkjet printing module includes a main ink tank, a secondary ink cartridge, and a printhead. The secondary ink cartridge includes a first chamber and a second chamber. The first chamber and the second chamber are respectively connected to the main ink tank and the printhead through pipelines. A peristaltic pump is provided between the first chamber and the second chamber to deliver ink from the second chamber to the first chamber.

[0011] A degassing lung is also provided between the first chamber and the nozzle. The degassing lung includes a degassing lung negative pressure interface, which is connected to an external degassing lung negative pressure source.

[0012] Furthermore, the colored ink module is provided with four ink printing modules, including a cyan ink printing module for printing cyan ink, a magenta ink printing module for printing magenta ink, a yellow ink printing module for printing yellow ink, and a black ink printing module for printing black ink; the white ink module is provided with a white ink printing module for printing white ink.

[0013] Furthermore, a first safety bottle and a second safety bottle are respectively connected to the first chamber and the second chamber;

[0014] The first safety bottle is connected to a first negative pressure solenoid valve and a first exhaust solenoid valve, and the second safety bottle is connected to a second negative pressure solenoid valve and a second exhaust solenoid valve.

[0015] Furthermore, the first negative pressure solenoid valve and the second negative pressure solenoid valve are respectively connected to an external negative pressure source.

[0016] Furthermore, the negative pressure value provided by the negative pressure source to the first negative pressure solenoid valve and the second negative pressure solenoid valve is lower than the working negative pressure value of the secondary ink cartridge.

[0017] Furthermore, a three-way solenoid valve is also connected to the first safety bottle. The first end of the three-way solenoid valve is connected to the first safety bottle, the second end of the three-way solenoid valve is connected to the printer negative pressure system, and the third end of the three-way solenoid valve is connected to a positive pressure source.

[0018] Furthermore, the degassed lung is model UDM41110PT1.

[0019] Furthermore, the printhead ink supply interface of the secondary ink cartridge, which is used to connect with the printhead, is located at the bottom of the secondary ink cartridge.

[0020] Furthermore, the peristaltic pump interface of the secondary ink cartridge for connecting to the peristaltic pump is located on the side of the secondary ink cartridge.

[0021] Furthermore, the height of the printhead ink delivery interface is lower than that of the peristaltic pump interface.

[0022] Beneficial effects

[0023] The ink bubble removal system for white and color inkjet printers provided by this invention achieves separate printing of white ink by setting up a white ink module. A degassing lung between the first chamber and the printhead removes air bubbles from the ink during circulation. By configuring the secondary ink cartridge as a first and second chamber, using a peristaltic pump for ink balancing, and carefully positioning the interfaces on the secondary ink cartridge, ink sedimentation is effectively prevented. This system is not only simple in structure and easy to assemble, but also capable of white and color printing. It effectively removes air bubbles from the ink, prevents ink sedimentation, improves print quality, and extends the lifespan of the inkjet printer. Attached Figure Description

[0024] Figure 1 This is a first-view structural schematic diagram of the air bubble removal system for a white ink printer according to the present invention;

[0025] Figure 2 This is a second-view structural schematic diagram of the air bubble removal system for a white ink printer according to the present invention;

[0026] Figure 3 This is a schematic diagram of the inkjet printing module in the ink bubble removal system for white color ink printers described in this invention.

[0027] Illustration markings:

[0028] 1-Color ink module, 101-Cyan ink printing module, 102-Magenta ink printing module, 103-Yellow ink printing module, 104-Black ink printing module;

[0029] 2-White ink module;

[0030] 3-Inkjet printing module, 301-Main ink tank, 302-Secondary ink cartridge, 303-Printhead, 304-Peristaltic pump, 305-Degassing lung, 306-Degassing lung negative pressure interface, 307-First safety bottle, 308-Second safety bottle, 309-Three-way solenoid valve, 310-First chamber, 311-Second chamber, 312-Printhead ink supply interface, 313-Peristaltic pump interface, 314-First negative pressure solenoid valve, 315-First exhaust solenoid valve, 316-Second negative pressure solenoid valve, 317-Second exhaust solenoid valve. Detailed Implementation

[0031] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. The described embodiments are merely some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0032] like Figure 1 and 3 As shown, this solution provides an ink bubble removal system for a white inkjet printer. The system is characterized by comprising a color ink module 1 and a white ink module 2. The color ink module 1 provides color inkjet printing, and the white ink module 2 provides white inkjet printing. Both the color ink module 1 and the white ink module 2 utilize an inkjet printing module 3 for ink supply and inkjet printing.

[0033] The inkjet printing module 3 includes a main ink tank 301, a secondary ink cartridge 302, and a printhead 303. The secondary ink cartridge 302 includes a first chamber 310 and a second chamber 311. The first chamber 310 and the second chamber 311 are respectively connected to the main ink tank 301 and the printhead 303 through pipelines. The main ink tank 301 supplies ink to the secondary ink cartridge 302, and the first chamber 310 supplies ink to the printhead 303. The printhead 303 delivers a portion of the ink to the second chamber 311. A peristaltic pump 304 is provided between the first chamber 310 and the second chamber 311 to deliver ink from the second chamber 311 to the first chamber 310, thereby achieving ink balance between the first chamber 310 and the second chamber 311.

[0034] A degassing lung 305 is also provided between the first chamber 310 and the nozzle 303. The degassing lung 305 includes a degassing lung negative pressure port 306, which is connected to an external degassing lung negative pressure source to remove air bubbles from the pipeline between the first chamber 310 and the nozzle 303. Since all the ink in the pipeline passes through this section of pipeline, the removal of air bubbles in the ink is indirectly achieved.

[0035] like Figure 2 As shown, the colored ink module 1 is equipped with four ink printing modules, including a cyan ink printing module 101 for printing cyan ink, a magenta ink printing module 102 for printing magenta ink, a yellow ink printing module 103 for printing yellow ink, and a black ink printing module 104 for printing black ink; the white ink module 2 is equipped with a white ink printing module for printing white ink.

[0036] It should be noted that the cyan ink printing module 101, the magenta ink printing module 102, the yellow ink printing module 103, and the black ink printing module 104 described in this embodiment have the same structure. The difference lies in the color of the ink contained in each of the main ink tanks, specifically:

[0037] There are four main ink tanks 301 located in the color ink module, which are used to hold cyan ink, magenta ink, yellow ink and black ink respectively. There is one main ink tank 301 located in the white ink module, which is used to hold white ink.

[0038] like Figure 3 As shown, as an optimization of the inkjet printing module 3 described in this embodiment, a first safety bottle 307 and a second safety bottle 308 are respectively connected to the first chamber 310 and the second chamber 311.

[0039] The first safety bottle 307 is connected to a first negative pressure solenoid valve 314 and a first exhaust solenoid valve 315, and the second safety bottle 308 is connected to a second negative pressure solenoid valve 316 and a second exhaust solenoid valve 317.

[0040] It should be noted that in this embodiment, the safety bottle serves as a secondary protection. If the float of the secondary ink cartridge 302 malfunctions, the ink will overflow into the safety bottle. When the safety bottle is full, it will trigger the float inside, thus stopping the ink supply.

[0041] In addition, the first negative pressure solenoid valve 314 and the second negative pressure solenoid valve 316 are respectively connected to an external negative pressure source; used to provide negative pressure to the first safety bottle 307 and the second safety bottle 308, so that when the float in the safety bottle is touched, the negative pressure function is activated, providing negative pressure to the secondary ink cartridge 302, and the ink supply will stop.

[0042] The negative pressure value provided by the negative pressure source to the first negative pressure solenoid valve 314 and the second negative pressure solenoid valve 316 is lower than the working negative pressure value of the secondary ink cartridge 302.

[0043] In this embodiment, a three-way solenoid valve 309 is also connected to the first safety bottle 307. The first end of the three-way solenoid valve 309 is connected to the first safety bottle 307, the second end of the three-way solenoid valve 309 is connected to the printer negative pressure system, and the third end of the three-way solenoid valve 309 is connected to the positive pressure source. Specifically, by connecting the printer negative pressure system or the positive pressure source, the ink supply control of the secondary ink cartridge 302 is realized.

[0044] As a specific embodiment of the degassed lung 305 described in this solution, the model of the degassed lung 305 is UDM41110PT1.

[0045] As a specific embodiment of the peristaltic pump 304 described in this solution, the peristaltic pump 304 is model Lichen LC-VSP-DG62; it has speed regulation function, forward and reverse rotation function, timing function, and power failure memory function, making it more convenient to use.

[0046] As a further optimization of this embodiment, the printhead ink supply interface 312 of the secondary ink cartridge 302, which is used to connect with the printhead 303, is located at the bottom of the secondary ink cartridge 302; this structure can more easily facilitate the ink at the bottom of the secondary ink cartridge 302 to form a circulating ink supply with the printhead, and prevent ink sedimentation at the bottom of the secondary ink cartridge 302.

[0047] The peristaltic pump interface 313 of the secondary ink cartridge 302, which connects to the peristaltic pump, is located on the side of the secondary ink cartridge 302; and the height of the printhead ink delivery interface 312 is lower than that of the peristaltic pump interface 313. This structure can effectively promote good ink circulation among the first chamber 310, the degassing lung 305, the printhead 303, and the second chamber 311, and effectively remove air bubbles from the ink while preventing ink sedimentation.

[0048] The above description is merely illustrative of the embodiments of the present invention and is not intended to limit the present invention. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A system for removing air bubbles from ink in a white inkjet printer, characterized in that, It includes a color ink module (1) and a white ink module (2), wherein the color ink module (1) is used to provide color inkjet, and the white ink module (2) is used to provide white inkjet; both the color ink module (1) and the white ink module (2) are supplied with ink and inkjet through the inkjet printing module (3); The inkjet printing module (3) includes a main ink tank (301), a secondary ink cartridge (302), and a printhead (303). The secondary ink cartridge (302) includes a first chamber (310) and a second chamber (311). The first chamber (310) and the second chamber (311) are respectively connected to the main ink tank (301) and the printhead (303) through pipelines. A peristaltic pump (304) is provided between the first chamber (310) and the second chamber (311) for transporting ink in the second chamber (311) to the first chamber (310). A degassing lung (305) is also provided between the first chamber (310) and the nozzle (303). The degassing lung (305) includes a degassing lung negative pressure port (306), which is connected to an external degassing lung negative pressure source to remove air bubbles from the pipeline between the first chamber (310) and the nozzle (303). The colored ink module (1) is provided with four ink printing modules, including a cyan ink printing module (101) for printing cyan ink, a magenta ink printing module (102) for printing magenta ink, a yellow ink printing module (103) for printing yellow ink, and a black ink printing module (104) for printing black ink; the white ink module (2) is provided with a white ink printing module for printing white ink; there are four main ink tanks (301) in the colored ink module, which are used to hold cyan ink, magenta ink, yellow ink and black ink respectively, and there is one main ink tank (301) in the white ink module, which is used to hold white ink; The first chamber (310) and the second chamber (311) are respectively connected to a first safety bottle (307) and a second safety bottle (308); the first safety bottle (307) is connected to a first negative pressure solenoid valve (314) and a first exhaust solenoid valve (315), and the second safety bottle (308) is connected to a second negative pressure solenoid valve (316) and a second exhaust solenoid valve (317); The printhead ink supply interface (312) of the secondary ink cartridge (302) for connecting to the printhead (303) is located at the bottom of the secondary ink cartridge (302); the peristaltic pump interface (313) of the secondary ink cartridge (302) for connecting to the peristaltic pump is located on the side of the secondary ink cartridge (302); the height of the printhead ink supply interface (312) is lower than that of the peristaltic pump interface (313). The deaerated lung (305) is model UDM41110PT1; The peristaltic pump (304) is model Lichen LC-VSP-DG62, which has speed regulation function, forward and reverse rotation function, timing function, and power failure memory function.

2. The ink bubble removal system for a white inkjet printer according to claim 1, characterized in that, The first negative pressure solenoid valve (314) and the second negative pressure solenoid valve (316) are respectively connected to an external negative pressure source.

3. The ink bubble removal system for a white inkjet printer according to claim 2, characterized in that, The negative pressure provided by the negative pressure source to the first negative pressure solenoid valve (314) and the second negative pressure solenoid valve (316) is lower than the working negative pressure value of the secondary ink cartridge (302).

4. The ink bubble removal system for a white color ink printer according to claim 2 or 3, characterized in that, A three-way solenoid valve (309) is also connected to the first safety bottle (307). The first end of the three-way solenoid valve (309) is connected to the first safety bottle (307), the second end of the three-way solenoid valve (309) is connected to the printer negative pressure system, and the third end of the three-way solenoid valve (309) is connected to a positive pressure source.

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