# US 10,369,790 B2 · Fluid dispenser > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,369,790 B2 - Document ID: US10369790B2 - Status: Granted - Kind: B2 - Application number: 15/465,563 - Filed: 2017-03-21 - Published: 2017-07-06 - Granted: 2019-08-06 - Earliest claimed: 2015-09-10 - Assignees: Hewlett-Packard Development Company, L.P. - Applicants: Hewlett-Packard Development Company, L.P. - Inventors: Silam J. Choy; Garrett E. Clark; Rio Rivas; Ed Friesen; Kelly Ronk - Web page: https://patentgrep.com/patent/US10369790B2 ## CPC - B41J 2/1433: {Structure of nozzle plates} - B05B 1/14: with multiple outlet openings (B05B1/02, B05B1/26 take precedence); with strainers in or outside the outlet opening - B41J 2/14145: {Structure of the manifold} - B05B 7/1686: {involving vaporisation of the material to be sprayed or of an atomising-fluid-generating product} - B05B 15/50: Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter - B05B 17/0646: {Vibrating plates, i.e. plates being directly subjected to the vibrations, e.g. having a piezoelectric transducer attached thereto} - B41J 2002/14387: {Front shooter} - B41J 2002/14419: {Manifold} - B41J 2002/14459: {Matrix arrangement of the pressure chambers} - B41J 2202/07: dealing with air bubbles - B41J 2202/11: characterised by specific geometrical characteristics - B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS - B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D) ## 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. ## Claims ### Claim 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. ### Claim 2 (depends on 1) 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. ### Claim 3 (depends on 1) 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. ### Claim 4 (depends on 1) 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. ### Claim 5 (depends on 1) 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. ### Claim 6 (depends on 1) 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. ### Claim 7 (depends on 6) 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. ### Claim 8 (depends on 1) 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. ### Claim 9 (depends on 1) The fluid dispenser of claim 1, wherein the array of ejection dies are to collectively span a full width of print media. ### Claim 10 (depends on 1) 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. ### Claim 11 (depends on 1) 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. ### Claim 12 (depends on 1) 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. ### Claim 13 (depends on 1) The fluid dispenser of claim 1, wherein the slot extends along a majority of the length of the ejection die. ### Claim 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. ### Claim 15 (depends on 14) 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. ### Claim 16 (depends on 14) The fluid delivery system of claim 14, where the manifold is bonded to the member. ### Claim 17 (depends on 14) 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. ### Claim 18 (depends on 14) 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. ### Claim 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 film within the fluidic chambers; orifices through which fluid may be ejected from the fluidic chambers; and a manifold bonded to the member, the manifold comprising fluid passageways, each of the fluid passageways connected to a respective one of the slots.