Fluid ejection device
AssigneeHewlett-Packard Development Company, L.P.
InventorsAlexander Govyadinov, Chris Bakker
Life of this patent
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Abstract
A fluid ejection device includes a fluid slot, a plurality of fluid ejection chambers communicated with the fluid slot, a plurality of drop ejecting elements one of each within one of the fluid ejection chambers, a plurality of fluid circulation channels each communicated with the fluid slot and one or more of the fluid ejection chambers, and a plurality of fluid circulating elements each communicated with one or more of the fluid circulation channels. The fluid circulating elements are to provide intermittent circulation of fluid from the fluid slot through the one or more of the fluid circulation channels and the one or more of the fluid ejection chambers.
Claims14
A fluid ejection device, comprising:
- a fluid slot;
- a plurality of fluid ejection chambers communicated with the fluid slot;
- a plurality of drop ejecting elements one of each within one of the fluid ejection chambers;
- a plurality of fluid circulation channels each communicated with the fluid slot and one or more of the fluid ejection chambers;
- and
- a plurality of fluid circulating elements each communicated with one or more of the fluid circulation channels,
- the fluid circulating elements to provide intermittent circulation of fluid from the fluid slot through the one or more of the fluid circulation channels and the one or more of the fluid ejection chambers, wherein a frequency of the intermittent circulation is variable based on operation of the drop ejecting elements.
A method of operating a fluid ejection device, comprising:
- communicating a plurality of fluid circulation channels with a fluid slot and one or more fluid ejection chambers of a plurality of fluid ejection chambers, the plurality of fluid circulation channels each having one of a plurality of fluid circulating elements communicated therewith, and the plurality of fluid ejection chambers each having one of a plurality of drop ejecting elements therein;
- and
- providing intermittent circulation of fluid from the fluid slot through one of the fluid circulation channels and the one or more fluid ejection chambers by operation of one of the fluid circulating elements,
- wherein providing the intermittent circulation comprises providing bursts of circulation through one or more of the fluid circulation channels between disassociated periods of operation of the drop ejecting elements.
Dependencies are inferred from the claim text.