Secondary ink box for ink-jet printer

Abstract

The secondary ink box comprises an ink box body, a rear end cover and a front end cover, the rear end cover and the front end cover are sealed and covered with the ink box body, an ink supply cavity and a backflow ink cavity which are located on the left side and the right side of the ink box body respectively are formed in the ink box body, and a plurality of ink through holes are formed in the bottom of the ink supply cavity and the bottom of the backflow ink cavity respectively. The ink supply cavity and the backflow ink cavity are each internally provided with a liquid level sensor used for detecting the amount of ink in the ink cavity, a negative pressure cavity I communicated with the ink supply cavity is formed above the ink supply cavity, and a negative pressure cavity II communicated with the backflow ink cavity is formed above the backflow ink cavity. The secondary ink box for the ink-jet printer is ingenious in design and has the beneficial effects that ink precipitation is prevented, bubbles are effectively removed, the printing stability is high, the constant-temperature effect is good, and the reliability is high.

Description

technical field [0001] The invention relates to the technical field of inkjet printing equipment, in particular to a secondary ink box for an inkjet printer. Background technique [0002] The printing trolley of the inkjet printer is equipped with a secondary ink cartridge, which is also called a secondary ink cartridge. Ink flows from the main ink tank to the secondary ink tank, and then the secondary ink tank supplies ink to each nozzle. In order to ensure the normal supply of ink, a liquid level sensor is often provided on the secondary ink cartridge to detect the amount of ink in the ink cartridge, so that the ink supply can be supplied in time when the ink cartridge is short of ink or the ink supply is sufficient; the ink of the secondary ink cartridge The negative pressure system and positive pressure system also need to be connected to the chamber. The negative pressure system is used to adjust the negative pressure value in the ink chamber to ensure the normal ink s...

AI Technical Summary

Problems solved by technology

In the prior art disclosed by Chinese patent CN206394248U, the main ink tank, the air-removing device, the first sub-ink box, the nozzle, the second sub-ink box, and the main ink tank are connected in sequence to make the ink circulate in a large circulation mode. It is long, and it is easy to cause ink pollution through various pumps, valves and other components, which not only makes the power of the device that provides power for the ink flow high, but also consumes a lot of money, and the ink is more likely to be polluted or generated in the long-path circulation flow. Air bubbles lead to unsatisfactory ink circulation effect, and shorten the service life of components such as filters; and the circulation between the secondary ink cartridge and the nozzle is realized by the pump, and the pump will generate pulse vibration when it is working, resulting in the nozzle at the nozzle. The ink circulation pressure is unstable, which affects the printing of the nozzle

[0004] When the inkjet printer is working normally, it has higher requirements on the working temperature of the ink. The working temperature of the ink is generally 23-26°C. When the temperature is too high, the ink is easy to volatilize and the ink is easy to dry. The fluidity of the ink becomes poor. Both of these situations will cause the ink output from the nozzle to deteriorate and affect the printing quality. Therefore, the ink supplied by the secondary ink cartridge to the print nozzle must maintain a suitable temperature to maintain good fluidity.

In the prior art disclosed by Chinese patent CN202088668U, although the temperature of the ink in the secondary ink cartridge can be controlled within a constant range, a cooling assembly, a heat dissipation assembly and a heating assembly are arranged around the secondary ink cartridge, which increases the temperature of the secondary ink cartridge. Volume and weight, when there are many types of ink required for printing, multiple secondary ink cartridges need to be installed, which will increase the overall volume and weight of the nozzle car, affect the stability of the car movement, and then affect the printing quality; in actual printing work There is also a certain temperature difference between the temperature of the ink in the nozzle and the temperature of the ink in the secondary ink cartridge. When the ink in the secondary ink cartridge is at a suitable temperature, the temperature of the ink in the print nozzle is often not within the appropriate temperature range. , thus affecting the print quality

[0007] 1) The ink circulation path is long, it is easy to be polluted or secondary bubbles are generated, resulting in unsatisfactory circulation effect and affecting the life of components;

[0008] 2) The circulation between the secondary ink cartridge and the nozzle is realized by the action of the pump. The pump will generate pulse vibration when it is working, which will cause the ink circulation pressure at the nozzle to be unstable and affect the printing of the nozzle;

[0009] 3) The constant temperature device of the secondary ink cartridge not only increases the volume and weight of the secondary ink cartridge, but also has an unsatisfactory constant temperature effect on the ink;

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