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| Number | Title | Issue Date |
| 7416293 | Ink recirculation system One embodiment of a method of storing a printhead includes opening a valve to a vent of an ink reservoir, operating a pump in a first direction to pull ink from the ink reservoir through said valve, and pumping the ink pulled from the ink reservoir to an ink supply ... | 08/26/2008 |
| 6390593 | Foam-filled caps for sealing inkjet printheads A foam-filled cap sealing ink-ejecting nozzles of an inkjet printhead in a printing mechanism has a two-layer structure, with an outer skin layer of an elastomer, and a second foam core layer inside the skin. The skin defines a sealing lip that surrounds ... | 05/21/2002 |
