Patent ID: 7682005

Claim:
A removable ink tank configured to be mounted to a printhead assembly installed on an imaging apparatus comprising: floor having an ink output port; a free ink chamber located above said floor; a suspended ink chamber located above said floor and around said ink output port, said suspended ink chamber being separated from said free ink chamber; at least one ink suspension body contained in said suspended ink chamber; a fluid communication port formed between said free ink chamber and said suspended ink chamber to facilitate a fluid communication between said free ink chamber and said suspended ink chamber; and a filter device positioned to cover said fluid communication port, said filter device having a porosity selected to establish a desired bubbling pressure between said free ink chamber and said suspended ink chamber, wherein said at least one ink suspension body includes a first ink suspension body and a second ink suspension body, said first ink suspension body being positioned adjacent to and above said filter device, and said second ink suspension body having an ink transfer surface positioned adjacent to and above said ink output port.