Fluid ejection die fluid recirculation
AssigneeHewlett-Packard Development Company, L.P.
InventorsChien-Hua Chen, Michael W Cumbie, Si-lam J Choy
Life of this patent
Estimating the term…
Abstract
A fluid ejection device includes a fluid ejection die to eject drops of fluid and a body to support the fluid ejection die, with the fluid ejection die including a fluid ejection chamber, a drop ejecting element within the fluid ejection chamber, and a fluid feed hole communicated with the fluid ejection chamber, and with the body including a fluid feed slot communicated with the fluid feed hole of the fluid ejection die. The fluid ejection device includes a micro-recirculation system to recirculate fluid within the fluid ejection die through the fluid ejection chamber, and a macro-recirculation system to recirculate fluid within the body through the fluid feed slot across the fluid feed hole of the fluid ejection die.
Claims13
A fluid ejection device, comprising:
- a fluid ejection die to eject drops of fluid, the fluid ejection die including a fluid ejection chamber, a drop ejecting element within the fluid ejection chamber, and a fluid feed hole communicated with the fluid ejection chamber;
- a body to support the fluid ejection die, the body including a fluid feed slot communicated with the fluid feed hole of the fluid ejection die;
- and
- a structure protruded into the fluid feed slot of the body toward the fluid feed hole of the fluid ejection die;
- the fluid ejection device to recirculate fluid within the fluid ejection die through the fluid ejection chamber;
- and
- the fluid ejection device to recirculate fluid within the body through the fluid feed slot around an end of the structure protruded toward the fluid feed hole and across the fluid feed hole.
A fluid ejection device, comprising:
- a die carrier;
- a body supported by the die carrier;
- a fluid ejection die supported by the body;
- the body having a fluid feed slot formed therein;
- the fluid ejection die including a fluid ejection chamber, a drop ejecting element within the fluid ejection chamber, and a fluid feed hole communicated with the fluid ejection chamber and the fluid feed slot;
- the die carrier including a structure protruded into the fluid feed slot toward the fluid feed hole;
- a first fluid-recirculation path through the fluid ejection chamber of the fluid ejection die;
- a second fluid-recirculation path around the protruded structure of the die carrier.
A method of operating a fluid ejection device, comprising:
- supplying fluid to a fluid ejection die through a fluid feed hole, the fluid ejection die to eject drops of the fluid;
- recirculating fluid within the fluid ejection die, including recirculating fluid supplied to the fluid ejection die through the fluid feed hole;
- and
- recirculating fluid within a body supporting the fluid ejection die, including recirculating fluid to and from the fluid feed hole through a fluid feed slot formed in the body, including recirculating fluid around an end of a structure protruded into the fluid feed slot toward the fluid feed hole.
Dependencies are inferred from the claim text.