Abstract: An inkjet cartridge. The inkjet cartridge includes a body and a seal member. The body includes a first chamber, a second chamber, a third chamber, a first exit, a second exit, a third exit, an opening, and a channel. Ink is received in the first chamber, the second chamber, and the third chamber. The second and third chambers communicate with the second and third exits so that the ink in the second and third chambers flows directly to the second and third exits. The channel communicates the first chamber and the first exit so that the ink in the first chamber flows to the first exit via the channel. The seal member is disposed on the channel via the opening, and seals the channel to prevent ink in the first chamber flowing through the first exit from flowing out of the opening.

Abstract: An inkjet cartridge. The inkjet cartridge includes a body and a seal member. The body includes a first chamber, a second chamber, a third chamber, a first exit, a second exit, a third exit, an opening, and a channel. Ink is received in the first chamber, the second chamber, and the third chamber. The second and third chambers communicate with the second and third exits so that the ink in the second and third chambers flows directly to the second and third exits. The channel communicates the first chamber and the first exit so that the ink in the first chamber flows to the first exit via the channel. The seal member is disposed on the channel via the opening, and seals the channel to prevent ink in the first chamber flowing through the first exit from flowing out of the opening.

Abstract: A method for filling an ink into an ink cartridge. A filter or an ink passage is treated with a surfactant to increase its hydrophilicity. Therefore, during ink filling, the ink can pass through the filter smoothly or air in the ink passage can be purged without any external force such as a vacuum, thus preventing cracks in the nozzle on the printhead chip.