Ink supply system of ink jet printer

Abstract

The invention relates to an ink supply system of an ink jet printer, which comprises an ink gun, a central print cartridge, ink pumps, an ink valve, an ink supplement apparatus and a waste ink recovery apparatus. According to the invention, two ink pumps are used to control the ink supply to the ink gun by the central print cartridge together; phenomenon like insufficient ink supply to the ink gun is further improved; ink supply rate to the printer is raised; ink return path is formed; the ink in an ink pipe and in the ink gun is discharged to the central print cartridge with air. In this way, the air inside the ink pipe can be removed and the ink won't be wasted. The waste ink retrieving apparatus makes it difficult to pollute the printer; the printing is more environment-protective; multiple sensors are used in the system, making the operation of the printer more intelligent and accurate, thereby reducing extra labor cost and providing accurate execution.

Description

Technical field: [0001] The invention relates to printer equipment, in particular to an ink supply system of an inkjet printer. Background technique: [0002] There are two main technologies used in inkjet printers: continuous inkjet technology and random inkjet technology. Early inkjet printers and current large-format inkjet printers all use continuous inkjet technology, while the current popular inkjet printers generally use random inkjet technology. In the random inkjet system, the ink is only ejected when printing is needed, so it is also called on-demand. Compared with the continuous type, it has simple structure, low cost and high reliability, and is favored by consumers. [0003] Continuous circulation inkjet system. It can generate high-speed ink droplets, so the printing speed is high, and ordinary paper can be used. Different printing media can obtain high-quality printing results, and it is also easy to achieve color printing. However, the structure of this i...

AI Technical Summary

Problems solved by technology

However, compared with the random type, the structure of this inkjet printer is more complicated: a pressurizing device is required for the ink, and a recycling device is required at the terminal to recycle and not participate in the recording, and the efficiency of the working method is not high enough, and it is not accurate.

[0004] Existing random inkjet printers will need to replace ink cartridges frequently due to ink exhaustion after a period of use. This will not only cause troubles for users, but also increase printing costs due to the high cost of ink cartridges

Traditional inkjet printers may fail to eject ink or print unevenly during the inkjet process. After checking the cause, it is found that the inkjet head enters the air, and an air pocket is formed in the nozzle, so the ink cannot be printed. Therefore, the inkjet printer exhausts the air. An important link, but in reality, when dealing with the problem of air entering the inkjet head, it is often necessary to take out the ink cartridge in the printer, use the needle tube to draw back the ink in the inkjet head, and then clean the inkjet head. This is too complicated in the process , the user also needs to artificially exhaust the air, and the effect is not ideal

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