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US 2015/0091989 A1Published application
Fluid Ejection Assembly with Circulation Pump
AssigneeHewlett-Packard Development Company, L.P.
InventorsAlexander Govyadinov, Jason Oak
Life of this patent
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Abstract
A fluid ejection assembly includes a fluid slot, a recirculation channel, and a drop ejection element within the recirculation channel. A pump element is configured to pump fluid to and from the fluid slot through the recirculation channel. A first addressable drive circuit associated with the drop ejection element and a second addressable drive circuit associated with the pump element are capable of driving the drop ejection element and the pump dement simultaneously.
Claims20
A fluid ejection assembly comprising:
- a fluid slot;
- a recirculation channel;
- a drop ejection element within the recirculation channel;
- a pump element to pump fluid to and from the fluid slot through the recirculation channel;
- and
- a first addressable drive circuit associated with the drop ejection element and a second addressable drive circuit associated with the pump element, the drive circuits capable of driving the drop ejection element and the pump element are coordinated.
3 more elements
A fluid ejection assembly comprising:
- a fluid slot;
- a recirculation channel, wherein an entrance and an exit of the recirculation channel have a same cross-sectional area;
- a drop ejection element within the recirculation channel;
- a pump element to pump fluid to and from the fluid slot through the recirculation channel;
- and
- a first addressable drive circuit associated with the drop ejection element and a second addressable drive circuit associated with the pump element, the drive circuits capable of driving the drop ejection element and the pump element simultaneously.
3 more elements
A fluid ejection assembly comprising:
- a fluid slot;
- a recirculation channel;
- a drop ejection element within the recirculation channel;
- a non-continuous pump element to pump fluid through the recirculation channel;
- and
- a first addressable drive circuit associated with the drop ejection element and a second addressable drive circuit associated with the pump element, the drive circuits capable of driving the drop ejection element and the pump element simultaneously.
3 more elements
Dependencies are inferred from the claim text.