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US 7,401,907 B2Granted
Imaging device including a passive valve
AssigneeHewlett-Packard Development Company, L.P.
InventorRaul Perez
Life of this patent
Estimating the term…
Abstract
One embodiment of an imaging device includes a first imaging fluid reservoir connected to a first passive valve, a second imaging fluid reservoir connected to a second passive valve, and a pumping system operatively connected to the first and second imaging fluid reservoirs for selectively flowing imaging fluid from each of the first and second imaging fluid reservoirs.
Claims19
An imaging device, comprising:
- a printhead;
- a first imaging fluid reservoir connected to a first passive one-way valve;
- a second imaging fluid reservoir connected to a second passive one-way valve;
- and
- a pumping system operatively connected to said first and second imaging fluid reservoirs for selectively flowing imaging fluid from the first imaging fluid reservoir directly to said printhead and from the second imaging fluid reservoir directly to said printhead.
2 more elements
An imaging device, comprising:
- an image producing structure;
- at least two imaging fluid reservoirs;
- at least two passive one-way valves, each operatively connected to a corresponding one Of said at least two imaging fluid reservoirs;
- and
- a pump system connected to said at least two imaging fluid reservoirs wherein operation of said pump system pumps fluid from a first of said two imaging fluid reservoirs directly to said image producing structure and pumps fluid from a second of said two imaging fluid reservoirs directly to said image producing structure.
2 more elements
An imaging device, comprising:
- a first imaging fluid reservoir connected to a first one-way valve, wherein said first one-way valve is moved between an open position and a closed position solely by fluid flow conditions within said device;
- a second imaging fluid reservoir connected to a second one-way valve, wherein said second one-way valve is moved between an open position and a closed position solely by fluid flow conditions within said device;
- and
- a pumping system operatively connected to said first and second imaging fluid reservoirs for selectively flowing imaging fluid from each of the first and second imaging fluid reservoirs,
- wherein said pumping system comprises a first pump connected to said first imaging fluid reservoir and a second pump connected to said second imaging fluid reservoir.
2 more elements
Dependencies are inferred from the claim text.