Agitating member for ink cartridge

An inkjet printer comprising:

• a housing;
• a carriage adapted to reciprocate along a printer shaft disposed within the housing;
• one or more printhead assemblies arranged on the carriage so that the printhead assemblies eject ink onto a print medium as the carriage reciprocates along the shaft in accordance with a control mechanism, wherein at least one of the one or more printhead assemblies comprises:
• an ink cartridge body;
• an ink reservoir disposed within the ink cartridge body and adapted to receive and contain ink;
• a filter disposed adjacent the ink reservoir to filter ink supplied from the ink reservoir as the ink passes through the filter;
• a printhead chip provided on the ink cartridge body and in fluid communication with the ink reservoir so as to receive the filtered ink for ejection of the ink onto a print medium;
• an ink filter tower disposed between the filter and the printhead chip, the ink filter tower comprising:
• an ink entrance passage that receives the filtered ink;
• a chamber that holds the filtered ink received through the ink entrance passage,
• a plurality of extending elements disposed within the chamber, through which the filtered ink passes to the printhead chip, the filtered ink passing through the chamber and around the plurality of extending elements, wherein the extending elements are spaced apart from, and are substantially parallel to, one another;
• a plurality of trenches disposed within the chamber, wherein the plurality of trenches are defined by the extending elements;
• and
• a slider positioned within and unattached to the ink filter tower so that the slider is free-floating and agitates the filtered ink within the ink filter tower, the slider comprising a bridging member and a plurality of shafts extending from the bridging member substantially parallel to one another.