Fluid dispenser

Patent metadata

Field	Value
Publication number	US-10369790-B2
Application number	US-201715465563-A
Country	US
Kind code	B2
Filing date	Mar 21, 2017
Priority date	Dec 21, 2011
Publication date	Aug 6, 2019
Grant date	Aug 6, 2019

Abstract

A fluid dispenser may include an array of fluid delivery assemblies. Each fluid delivery assembly may include orifices through which fluid is to be ejected and slots. Each slot extends to a respective one of the orifices. The slots have different geometric shapes.

First claim

What is claimed is:

1. A fluid dispenser comprising:
an array of ejection dies, each ejection die comprising:
orifices through which fluid is to be ejected;
slots, each slot having a length and a width shorter than the length, each slot extending to a respective one of the orifices, wherein the slots have different geometric shapes, wherein the orifices are aligned in a plane and wherein the slots comprise a slot having a sidewall extending parallel to the length and perpendicular to the plane and a second opposite side wall extending parallel to the length and oblique to the plane.

2. The fluid dispenser of claim 1 , wherein the orifices are aligned in a plane and wherein the slots comprise a slot having a first side wall extending at an oblique angle relative to the plane and a second opposite side wall extending at the oblique angle relative to the plane.

3. The fluid dispenser of claim 1 , wherein the orifices are aligned in a plane and wherein the slots comprise a slot having a first side wall extending oblique to the plane and a second opposite side wall having a first portion at a first oblique angle relative to the plane and a second portion at a second oblique angle relative to the plane, the second oblique angle being different than the first oblique angle.

4. The fluid dispenser of claim 1 , wherein the orifices are aligned in a plane and wherein the slots comprise a slot having opposite side walls that mirror one another and that have multiple portions extending at different angles oblique to the plane.

5. The fluid dispenser of claim 1 , wherein the slots comprise a slot fluidly connected to each of a pair of fluid chambers and respective fluid actuators on opposite sides of the slot.

6. The fluid dispenser of claim 1 , wherein the orifices are aligned in a plane, the fluid dispenser further comprising at least one manifold, the at least one manifold comprising slanted fluid passageways, each fluid passageway connected to a respective slot and having at least one side wall oblique to the plane.

7. The fluid dispenser of claim 6 , wherein each of the fluid passageways has a first width proximate the orifices and a second width, greater than the first width, distant the orifices.

8. The fluid dispenser of claim 1 , wherein each ejection die comprises a substrate through which the slots extend, wherein the manifold is bonded to the substrate.

9. The fluid dispenser of claim 1 , wherein the array of ejection dies are to collectively span a full width of print media.

10. The fluid dispenser of claim 1 , wherein each ejection die further comprises:
a substrate having a first side and a second opposite side, wherein the slots extend from the first side to the second side;
a thin film coupled to the substrate;
a member coupled to the thin film, the member forming fluidic chambers; and
actuators formed on and supported by the thin film within the fluidic chambers.

11. The fluid dispenser of claim 1 , wherein the slots comprise:
a first one of the slots connected to a first source of a first fluid; and
a second one of the slots connected to a second source of a second fluid different than the first fluid.

12. The fluid dispenser of claim 1 , wherein the orifices are aligned in a plane and wherein the slots comprise:
a second slot having a first side wall extending at a first oblique angle relative to the plane and a second opposite side wall extending at the first oblique angle relative to the plane;
a third slot having a first side wall extending oblique to the plane and a second opposite side wall having a first portion at a second oblique angle relative to the plane and a second portion at a third oblique angle relative to the plane, the third oblique angle being different than the first oblique angle; and
a fourth slot having opposite side walls that mirror one another and that have multiple portions extending at different angles oblique to the plane.

13. The fluid dispenser of claim 1 , wherein the slot extends along a majority of the length of the ejection die.

14. A fluid delivery assembly comprising:
a member through which slots extend to fluidic chambers,
a thin film formed on and supported by the member opposite the fluidic chambers;
actuators formed on the thin film within the fluidic chambers; and
orifices through which fluid may be ejected from the fluidic chambers; and
a manifold coupled to the member, the manifold comprising fluid passageways, wherein all of the fluid passageways of the manifold extending to the member are slanted in a single same direction, each of the fluid passageways connected to a respective one of the slots.

15. The fluid delivery assembly of claim 14 , wherein the slots comprise:
a first slot having a first cross-sectional geometric shape,
a second slot extending parallel to the first slot and having a second cross-sectional geometric shape different than the first cross-sectional geometric shape; and
a third slot extending parallel to the second slot and having a third cross-sectional geometric shape different than the first cross-sectional geometric shape and different than the second cross-sectional geometric shape.

16. The fluid delivery system of claim 14 , where the manifold is bonded to the member.

17. The fluid delivery system of claim 14 , wherein each of the fluid passageways has a first width proximate the member and a second width, greater than the first width, distant the member.

18. The fluid delivery system of claim 14 , wherein the orifices are aligned in a plane and wherein the slots comprise at least two slots selected from a group of slots consisting of:
a first slot having a sidewall perpendicular to the plane and a second opposite side wall oblique to the plane;
a second slot having a first side wall extending at a first oblique angle relative to the plane and a second opposite side wall extending at the first oblique angle relative to the plane;
a third slot having a first side wall extending oblique to the plane and a second opposite side wall having a first portion at a second oblique angle relative to the plane and a second portion at a third oblique angle relative to the plane, the third oblique angle being different than the first oblique angle; and
a fourth slot having opposite side walls that mirror one another and that have multiple portions extending at different angles oblique to the plane.

19. A fluid dispenser comprising:
a bar,
an array of staggered ejection dies supported by the bar, the array to collectively span a full width of print media, each of the fluid ejection dies comprising:
a member through which slots extend to fluidic chambers, the slots comprising:
a first slot having a sidewall perpendicular to the plane and a second opposite side wall oblique to the plane;
a second slot having a first side wall extending at a first oblique angle relative to the plane and a second opposite side wall extending at the first oblique angle relative to the plane;
a third slot having a first side wall extending oblique to the plane and a second opposite side wall having a first portion at a second oblique angle relative to the plane and a second portion at a third oblique angle relative to the plane, the third oblique angle being different than the first oblique angle; and
a fourth slot having opposite side walls that mirror one another and that have multiple portions extending at different angles oblique to the plane;

a thin film formed on supported by the member opposite the fluidic chambers;
actuators formed on the thin

Assignees

• Hewlett Packard Development Co

Inventors

• Choy Silam J
• Clark Garrett E
• Rivas Rio
• Friesen Ed
• Ronk Kelly

Classifications

• B05B17/0646

  Vibrating plates, i.e. plates being directly subjected to the vibrations, e.g. having a piezoelectric transducer attached thereto · CPC title

• B41J2002/14387

  Front shooter · CPC title

• B05B7/1686

  involving vaporisation of the material to be sprayed or of an atomising-fluid-generating product · CPC title

• B41J2202/11

  characterised by specific geometrical characteristics · CPC title

• B41J2202/07

  dealing with air bubbles · CPC title