Fluid ejection device and method of fluid ejection
AssigneeHewlett-Packard Development Company, L.P.
InventorsNaoto Kawamura, Marvin G. Wong
Life of this patent
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Abstract
A fluid ejection device capable of ejecting fluid onto media. The device includes a carrier having an upper surface that defines a recess. The device further includes a fluid ejecting substrate disposed therein that is configured for establishing electrical and fluidic coupling with the carrier. The fluid ejecting substrate has a generally planar orifice layer defining a plurality of orifices therein and a generally planar contact surface positioned below the orifice layer. The device further includes an encapsulant that at least partially encapsulates the fluid ejecting substrate and the carrier to form a substantially co-planar surface with the orifice layer.
Claims16
A fluid ejection device capable of ejecting fluid onto media comprising:
- a carrier having an upper surface that defines a recess;
- a fluid ejecting substrate disposed therein that is configured for establishing electrical and fluidic coupling with the carrier, the fluid ejecting substrate having a generally planar orifice layer defining a plurality of orifices therein and a generally planar contact surface positioned below the orifice layer;
- and
- an encapsulant that at least partially encapsulates the fluid ejecting substrate and the carrier to form a surface that is coplanar with the orifice layer.
A printing system for close proximate printing with print media, the printing system having a fluid reservoir configured to supply fluid to a printhead for ejecting fluid onto the print media through orifices formed in an orifice layer disposed on a fluid ejecting substrate, the printing system comprising:
- a printhead positioning member that positions the printhead relative to the print media;
- and
- a molded encapsulant formed coplanar with the orifice layer thereby allowing the printhead positioning member to position the orifice layer within 0.5 millimeters of the print media.
An inkjet printhead responsive to activation signals for ejecting ink onto media comprising:
- a carrier having an upper surface that defines a recess, wherein the recess formed in the upper surface of the carrier is countersunk thereby forming a countersunk recess, wherein a portion of the countersunk recess comprises electrical connectors formed therein;
- a fluid ejecting substrate disposed therein that is configured for establishing electrical and fluidic coupling with the carrier, the fluid ejecting substrate having a generally planar orifice layer defining a plurality of orifices therein and a generally planar contact surface positioned below the orifice layer;
- and
- an encapsulant that at least partially encapsulates the fluid ejecting substrate and the carrier to form a substantially co-planar surface with the orifice layer,
- wherein the carrier further comprises an inner lower surface configured to support the fluid ejecting substrate,
- wherein the portion of the countersunk recess comprising the electrical connectors is positioned below the upper surface of the carrier and has a predetermined depth chosen to substantially equal the height of the contact surface of the fluid ejecting substrate.
Dependencies are inferred from the claim text.