Ink cartridge having filtering means

Abstract

An ink box with filter is composed of an ink storage cavity, an air hole with control valve, a filter at the bottom of said ink storage cavity and made of millipore filtering material, an ink supplying port, and an ink supplying channel. Its advantages are precise flow control, no ink leakage and blocking, and high printing quality.

Description

technical field [0001] The present invention relates to an ink cartridge with a filter for supplying ink to a recording head of an ink jet printer. Background technique [0002] In order to meet people's increasing demands for printing quality and printing speed, inkjet printers have been continuously developed in continuous improvement, resulting in an increase in the number of inkjet tube nozzles and a decrease in nozzle diameter of the inkjet recording head , this must require that the ink cartridge adapted thereto has high ink supply performance, can provide a large amount of ink to the inkjet recording head, the ink is not easy to leak, does not block the inkjet recording head and can store as much ink as possible in a limited space. [0003] In order to solve this problem, a porous member is usually used in the ink storage chamber of the ink cartridge to absorb and store ink, such as a polyurethane sponge, and its mechanism of action is to absorb ink through the capill...

AI Technical Summary

Problems solved by technology

Second, the first surface of the elastic member is in contact with the protruding part of the ink supply channel in the ink storage area under the action of the bias force generated by the spring. If the cross-sectional area of ​​the protruding part of the ink supply channel in the ink storage area is small, the protruding part will inevitably It will be embedded in the elastic member, and may even pierce the elastic member, so that the ink reaches the other side of the elastic member and loses its function; Under the action of the elastic member is in contact with the protruding part of the ink supply channel in the ink storage area, and its contact surface will definitely form a layer of ink film when the ink is filled, so that there is a gap between the elastic member and the protruding part of the ink supply channel in the ink storage area. Larger static pressure may not be able to separate the elastic member from the protruding part of the ink supply channel in the ink storage area with the negative pressure in the ink supply port, resulting in poor ink supply, which is why the ink cartridge needs to be shaken several times before use. The reason why the static pressure printing effect is better

Third, once the ink is supplied to the recording head of the inkjet printer under negative pressure, the entire ink supply channel from the ink storage area to the ink supply port is a macro channel, that is, the cross-sectional size is much larger than the ink particle size, When the raw materials of the ink cartridges have unremoved dust or accidentally fall into the dust during production, or the ink cartridges are stored for a long time due to ink coagulation and other impurities such as flocculent deposits will flow into the recording head of the inkjet printer indiscriminately. , resulting in head clogging

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