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US 2004/0165048 A1Published application
Ink filling method
AssigneeBenq Corporation
InventorsKuo-Tong Ma, In-Shan Sir, Yuh-Ming Hsieh, Fan-Chung Tseng
Life of this patent
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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.
Claims21
A method for filling an ink into an ink cartridge, comprising:
- treating a filter with a surfactant to increase the hydrophilicity of the filter, wherein the filter has pores;
- installing the treated filter in an ink cartridge;
- and
- filling an ink into the ink cartridge to pass through the treated filter.
1 more element
A method for filling an ink into an ink cartridge, comprising:
- installing a filter in an ink cartridge, wherein the filter has pores;
- treating the filter with a surfactant to increase the hydrophilicity of the filter;
- and
- filling an ink into the ink cartridge to pass through the treated filter.
1 more element
A method for filling an ink into an ink cartridge, comprising:
- providing an ink cartridge having an ink passage, wherein the ink passage has a wall
- treating the wall of the ink passage with a surfactant to increase the hydrophilicity of the wall of the ink passage;
- and
- filling an ink into the ink cartridge to pass through the treated the ink passage.
1 more element
Dependencies are inferred from the claim text.