Ink Injection Method for Ink Cartridges

Abstract

The invention provides a method for injecting ink into an ink box, wherein the ink box comprises an ink accommodation part for accommodating the ink, an ink supply part for supplying the ink to a printer, and an air intake passage communicated with the ink accommodation part and external atmosphere, and the air intake passage is communicated with the external atmosphere by an atmospheric communication hole. The method comprises the steps of performing suction to reduce pressure in the interior of the ink box by the ink supply part, and stopping suction until the negative pressure in the interior of the ink box reaches a preset value; injecting the ink to the ink accommodation part through an ink injection hole of the ink box, and injecting air to the air intake passage through the atmospheric communication hole till the air intake passage is filled with air and the ink is outside the air intake passage; and sealing the ink injection hole and the atmospheric communication hole. According to the method for injecting the ink into the ink box, disclosed by the invention, the purpose that the ink is injected into the ink box without flowing into the air intake passage is achieved.

Description

technical field [0001] The invention relates to inkjet printer technology, in particular to an ink injection method for an ink box. Background technique [0002] At present, when the ink cartridge is filled with ink, the method of negative pressure ink filling is mostly adopted, that is, the inside of the ink cartridge is first decompressed and then ink is injected into it. In addition, the ink cartridge is also provided with a labyrinth-shaped air intake channel, which is used to prevent ink volatilization and prevent dust and impurities in the air from directly entering the interior of the ink cartridge. However, the above-mentioned ink cartridges are prone to the following phenomena when filling ink under negative pressure: when the internal negative pressure of the ink cartridge is sucked, most of the air in the air intake passage will also be sucked away, and a negative pressure is also formed in the air intake passage at this time; When the ink is injected, the ink te...

AI Technical Summary

Problems solved by technology

However, the above-mentioned ink cartridges are prone to the following phenomena when filling ink under negative pressure: when the internal negative pressure of the ink cartridge is sucked, most of the air in the air intake passage will also be sucked away, and a negative pressure is also formed in the air intake passage at this time; When injecting ink, the ink easily enters the air intake channel and stays in the air intake channel

[0003] Obviously, the above phenomenon is prone to the following technical problems: since there is also ink in the air intake channel, when the user uses the ink cartridge and tears off the film sealing the air intake channel, ink splashes may occur and the user's hands or clothes may be soiled; and , because the air intake channel is often set relatively thin, if the ink staying in the air intake channel stays for too long and volatilizes more, the above-mentioned ink will dry out and cause certain obstacles to the entry of air, that is, affect the air intake channel. Intake performance

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