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Ink cartridges for inkjet printers
An ink cartridge for an ink jet printer includes an ink cartridge, a leak-proof ring, a vacuum cylinder plug, and an end plug. The ink cartridge is characterized in that the ink cartridge has a long cylinder shape, an inner cylinder space is arranged at the center, a snap ring is arranged at the outer edge of the cylinder body, and the outer edge of the cylinder body is provided with a finger pressure plate; a central filling pipe is arranged at the center of the cylinder; The sleeve that is placed on one end of the ink cartridge body is provided with a through hole at the center of the outer end; the vacuum cylinder is a long cylindrical body, the center of the cylinder body is in the shape of an inner cylinder, and one end is an open end and is sleeved on the outer edge of the vacuum cylinder. The inner cylinder and the leakage prevention ring of the ink cartridge are in close contact; the cylindrical hole and the column hole plug are arranged at the center of the closed end plate surface of the cylinder, and the plug is set at the outer edge of the filling tube.