Fluid ejection device

1. A fluid ejection apparatus comprising:

a fluid ejection device comprising:

a body defining an interior bore and comprising an engagement portion;

a fluid reservoir defining an interior passage that receives a fluid, the interior passage in fluid communication with the interior bore of the body; and

a fluid ejection chip coupled with the body and comprising one or more fluid ejection actuators, the fluid ejection chip having one or more interior fluid paths in fluid communication with the interior bore of the body so that the fluid ejection chip ejects the fluid upon activation of the one or more fluid ejection actuators; and

an adapter coupled with the fluid reservoir and defining an interior passage in fluid communication with the interior passage of the fluid reservoir, the adapter defines an interior chamber that at least partially receives the fluid reservoir, the adapter interengages a fluid storage device;

wherein the interior passage of the fluid reservoir, the interior bore of the body, and the one or more interior fluid paths are substantially devoid of obstructions such that the fluid is gravity fed to the fluid ejection chip upon entry into the interior passage of the fluid reservoir, and

wherein the engagement portion provides for a grasping engagement with the fluid ejection device during an operation of the fluid ejection chip.

2. The apparatus of claim 1 , wherein the adapter comprises a needle for penetrating a portion of the fluid storage device.

3. The apparatus of claim 2 , wherein the needle comprises an interior channel for fluid communication with the fluid storage device.

4. The apparatus of claim 1 , wherein a portion of the adapter coupled with the fluid reservoir is a Luer fitting.

5. The apparatus of claim 1 , wherein the one or more fluid ejection actuators are thermal ejection actuators.

6. The apparatus of claim 1 , wherein the fluid ejection chip comprises a substrate, a flow feature layer disposed over the substrate, and a nozzle layer disposed over the flow feature layer.

7. The apparatus of claim 1 , wherein the fluid ejection chip comprises a nozzle layer defining one or more nozzles.

8. The apparatus of claim 1 , further comprising an electrical connector in electrical communication with the fluid ejection chip.

9. The apparatus of claim 1 , wherein the fluid reservoir is aligned with the interior bore of the body.

10. The apparatus of claim 1 , wherein the fluid reservoir is axially aligned with the fluid ejection chip.

11. The apparatus of claim 1 , wherein the interior passage of the adapter, the interior passage of the fluid reservoir, the interior bore of the body, and the one or more interior fluid paths are axially aligned.

12. The apparatus of claim 1 , wherein the one or more interior fluid paths are substantially linear.

13. A fluid ejection apparatus, comprising:

a fluid ejection printer comprising:

a housing; and

at least one of an internal power source or one or more electrical contacts in electrical communication with an external power source;

a fluid ejection device comprising:

a body defining an interior bore and comprising an engagement portion;

a fluid reservoir defining an interior passage that receives a fluid, the interior passage in fluid communication with the interior bore of the body;

a fluid ejection chip coupled with the body and comprising one or more fluid ejection actuators, the fluid ejection chip having one or more interior fluid paths in fluid communication with the interior bore of the body so that the fluid ejection chip ejects the fluid upon activation of the one or more fluid ejection actuators;

an electrical connector in electrical communication with the fluid ejection printer so that power is supplied from the fluid ejection printer to the fluid ejection chip;

an adapter coupled with the fluid reservoir and defining an interior passage in fluid communication with the interior passage of the fluid reservoir, the adapter defines an interior chamber that at least partially receives the fluid reservoir;

wherein the interior passage of the fluid reservoir, the interior bore of the body, and the one or more interior fluid paths are substantially devoid of obstructions such that the fluid is gravity fed to the fluid ejection chip upon entry into the interior passage of the fluid reservoir, and

wherein the engagement portion provides for a grasping engagement with the fluid ejection device during an operation of the fluid ejection chip.

14. The apparatus of claim 13 , wherein the fluid ejection printer comprises a carrier for coupling with the fluid ejection device.

15. The apparatus of claim 14 , wherein the carrier is moveable with respect to the housing of the fluid ejection printer.

16. The apparatus of claim 13 , wherein the fluid ejection printer comprises a controller.