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Inventor: Gregory John McAvoy


Address: Balmain, AU
No. of applications: 158
Last application issue date: 01/26/2012

1        
Application No.Application TitleIssue Date
20120019601MICRO-ELECTROMECHANICAL NOZZLE ARRANGEMENT WITH PYRAMIDAL INK CHAMBER FOR AN INKJET PRINTHEAD
This invention relates to a micro-electromechanical nozzle arrangement for an inkjet printhead. The arrangement includes a substrate defining an inverted pyramidal ink chamber with a vertex thereof terminating at an ink supply channel through the substrate. The substrat...
01/26/2012
20110090286PRINTHEAD INTEGRATED CIRCUIT HAVING EXPOSED ACTIVE BEAM COATED WITH POLYMER LAYER
A printhead integrated circuit includes: a substrate comprising drive circuitry; a ceramic nozzle plate spaced apart from the substrate, the nozzle plate having a plurality of nozzle openings and a plurality of moveable portions defined therein; an active beam disposed ...
04/21/2011
20110050806CRACK-RESISTANT THERMAL BEND ACTUATOR
A thermal bend actuator comprises an active beam for connection to drive circuitry and a passive beam mechanically cooperating with the active beam. When a current is passed through the active beam, the active beam expands relative to the passive beam resulting in bendi...
03/03/2011
20110047781METHOD OF FABRICATING CRACK-RESISTANT THERMAL BEND ACTUATOR
A method of fabricating a thermal bend actuator comprises the steps of: (a) depositing a first layer comprised of silicon nitride onto a sacrificial scaffold; (b) depositing a second layer comprised of silicon dioxide onto the first layer; (c) depositing an active beam ...
03/03/2011
20110018937PRINTHEAD HAVING INK EJECTION FACE COMPLEMENTING INK OR OTHER FEATURES OF PRINTHEAD
An inkjet printhead for ejection of an ejectable fluid. The printhead has an ink ejection face coated with a polymeric material incorporating nanoparticles. The nanoparticles impart predetermined characteristics to the ink ejection face, which complement an inherent pro...
01/27/2011
20110018939INKJET PRINTHEAD ASSEMBLY HAVING BACKSIDE ELECTRICAL CONNECTION
An inkjet printhead assembly comprising an ink supply manifold; printhead integrated circuits and a connector film for supplying power to drive circuitry in the printhead integrated circuits. Each printhead integrated circuit has a frontside comprising the drive circuit...
01/27/2011
20110020964METHOD OF FABRICATING INKJET PRINTHEAD ASSEMBLY HAVING BACKSIDE ELECTRICAL CONNECTIONS
A method of fabricating an inkjet printhead assembly having backside electrical connections. The method comprises the steps of: (a) providing printhead integrated circuits, each having a backside recessed edge portion and connectors extending through the integrated circ...
01/27/2011
20110018940PRINTHEAD INTEGRATED CIRCUIT CONFIGURED FOR BACKSIDE ELECTRICAL CONNECTION
A printhead integrated circuit has a frontside comprising drive circuitry and inkjet nozzle assemblies, a backside for attachment to an ink supply manifold and ink supply channels providing fluid communication between the backside and the inkjet nozzle assemblies. The b...
01/27/2011
20110018936PRINTHEAD HAVING POLYMER INCORPORATING NANOPARTICLES COATED ON INK EJECTION FACE
A printhead having an ink ejection face, wherein at least part of the ink ejection face is coated with a polymeric material. The polymeric material is comprised of a polymerized siloxane incorporating nanoparticles. The printhead may be compatible with various printhead...
01/27/2011
20110018941PRINTHEAD INTEGRATED COMPRISING THROUGH-SILICON CONNECTORS
A printhead integrated circuit comprising a silicon substrate defining a frontside and a backside, inkjet nozzle assemblies positioned at the frontside, drive circuitry for supplying power to the inkjet nozzle assemblies and through-silicon connectors extending from the...
01/27/2011
20110018935PRINTHEAD HAVING POLYSILSESQUIOXANE COATING ON INK EJECTION FACE
A printhead having an ink ejection face coated with a hydrophobic polymeric material. The polymeric material is comprised of a polysilsesquioxane, such as poly(methylsilsesquioxane) or poly(phenylsilsesquioxane). The printhead is compatible with various printhead mainte...
01/27/2011
20110020965METHOD OF FABRICATING PRINTHEAD INTEGRATED CIRCUIT WITH BACKSIDE ELECTRICAL CONNECTIONS
A method of fabricating a printhead integrated circuit configured for backside electrical connections. The method comprises the steps of: (a) providing a wafer comprising a plurality of partially-fabricated nozzle assemblies on a frontside of the wafer and through-silic...
01/27/2011
20100315468INKJET NOZZLE ASSEMBLY WITH THERMAL BEND ACTUATOR DEFINING MOVING PORTION OF NOZZLE CHAMBER ROOF
An inkjet nozzle assembly includes a nozzle chamber comprising a floor and a roof. The roof has a nozzle opening defined therein, and a moving portion moveable towards the floor. The assembly further comprises a thermal bend actuator, defining at least part of the movin...
12/16/2010
20100302320HEATER ASSEMBLY FOR PRINTHEAD
A heater assembly for a printhead is provided having a heating element including a heating layer and a non-heating layer, and a heat conduction means positioned in the middle of the non-heating layer so as to be spaced from the heating layer to conduct heat generated by...
12/02/2010
20100277551MICRO-ELECTROMECHANICAL NOZZLE ARRANGEMENT HAVING CANTILEVERED ACTUATOR
A micro-electromechanical nozzle arrangement for an inkjet printhead includes a substrate defining an inverted pyramidal ink chamber with a vertex thereof terminating at an ink supply channel defined by the substrate, said substrate having a layer of CMOS drive circuitr...
11/04/2010
20100271430PRINTHEAD PROVIDED WITH INDIVIDUAL NOZZLE ENCLOSURES
A unit cell, a plurality of which make up a printhead, includes a substrate including an ink inlet passage; a chamber defined by chamber sidewalls and a nozzle plate defining an aperture for ejection of ink from the chamber, the chamber being in fluid communication with...
10/28/2010
20100271434PRINTHEAD WITH MOVABLE EJECTION ORIFICE
An inkjet printhead that has a first layer with an opening, a second layer with a hole and a flexible element supported by the second layer. The flexible element has an orifice through which ink is ejected. An actuator deflects the flexible element to force the ink thro...
10/28/2010
20100231652INKJET NOZZLE ASSEMBLY HAVING BILAYERED PASSIVE BEAM
An inkjet nozzle assembly comprises: a nozzle chamber having a nozzle opening and an ink inlet; and a thermal bend actuator for ejecting ink through the nozzle opening. The actuator comprises: an active beam for connection to drive circuitry; a first passive beam fused ...
09/16/2010
20100220142PRINTHEAD WITH INK DISTRIBUTION THROUGH ALIGNED APERTURES
An inkjet printhead that has an elongate chassis, first groups of apertures spaced along the elongate chassis, an ink distribution unit defining a plurality of ink distribution passages and second groups of apertures in fluid communication with respective ink distributi...
09/02/2010
20100220155THERMAL INK JET PRINTHEAD
An ink jet printhead includes a plurality of nozzles each having a nozzle aperture; a plurality of bubble forming chambers, each corresponding respectively to one of the plurality of nozzles; an inlet for communicating printing fluid between the nozzle aperture and a pr...
09/02/2010
20100207997PRINTHEAD NOZZLE ARRANGEMENT HAVING INTERLEAVED HEATER ELEMENTS
A printhead nozzle arrangement is provided having a wafer defining a chamber for holding ejection fluid, an ejection port supported by a plurality of bridge members which extend from the ejection port to sides of the chamber, and a plurality of heater elements interleav...
08/19/2010
20100171795INKJET PRINTHEAD INTERGRATED CONFIGURED TO MINIMIZE THERMAL LOSSES
Provided is an inkjet printhead integrated circuit that has a wafer substrate that has an ink passage, and a nozzle plate supported on the substrate by side walls to define an ink chamber supplied with ink via the ink passage. The nozzle plate has an ink ejection port c...
07/08/2010
20100149255PRINTHEAD NOZZLE ARRANGEMENT HAVING INK EJECTING ACTUATORS ANNULARLY ARRANGED AROUND INK EJECTION PORT
A printhead for an inkjet printer includes a wafer defining a plurality of nozzle chambers and a plurality of ink supply channel in fluid communication with the plurality of nozzle chambers for supplying the plurality of nozzle chambers with ink; an ink ejection port as...
06/17/2010
20100149266Mems Integrated Circuit With Polymerized Siloxane Layer
A MEMS integrated circuit comprises: a silicon substrate having a passivated CMOS layer, a MEMS layer disposed on the passivated CMOS layer, and a polymer layer disposed on the MEMS layer. The CMOS layer comprises drive circuitry for actuating actuator devices in the ME...
06/17/2010
20100149279INKJET NOZZLE ASSEMBLY HAVING HEATER ELEMENT BONDED TO CHAMBER WALL VIA DIELECTRIC LAYER
An inkjet nozzle assembly has a chamber with a nozzle opening for ejecting a liquid, a heater element disposed in the chamber, and a dielectric layer sandwiched between the heater element and a wall of the chamber. The dielectric layer has a thermal product of less than...
06/17/2010
20100149622DIGITAL MICRO-MIRROR DEVICE
A digital micro-mirror device comprising an array of micro-mirror assemblies positioned on a substrate. Each micro-mirror assembly comprises: a mirror spaced apart from the substrate; a stem supporting the mirror; and first and second electrodes positioned on either sid...
06/17/2010
20100149623METHOD OF FABRICATING MICRO-MIRROR ASSEMBLY
A method of fabricating a micro-mirror assembly. The method comprises the steps of: (a) forming a pair of electrodes spaced apart on a surface of a substrate; (b) depositing a layer of sacrificial material over the electrodes and the substrate; (c) defining a stem openi...
06/17/2010
20100128082METHOD OF FABRICATING NOZZLE ASSEMBLY HAVING MOVING ROOF STRUCTURE AND SEALING BRIDGE
A method of fabricating an inkjet nozzle assembly having a seal member bridging between a moving portion and a stationary portion. The method includes the steps of: (a) providing a partially-fabricated printhead comprising a nozzle chamber sealed with a roof, (b) etchin...
05/27/2010
20100128086PRINTHEAD INCLUDING MOVING PORTIONS AND SEALING BRIDGES
An inkjet printhead comprising: a stationary portion; a plurality of moving portions for ejection of ink; and a plurality of seal members. Each seal member connects a respective moving portion with the stationary portion. Each seal member has a non-planar profile config...
05/27/2010
20100128087INKJET NOZZLE ASSEMBLY HAVING MOVING ROOF STRUCTURE AND SEALING BRIDGE
A nozzle assembly for an inkjet printhead. The nozzle assembly includes a nozzle chamber with a roof having a nozzle opening defined therein. The roof includes a moving portion moveable relative to a stationary portion, such that movement of the moving portion relative ...
05/27/2010
20100110147Inkjet Nozzle Assembly With Thermal Bend Actuator Defining Part Of Nozzle Chamber Roof
An inkjet nozzle assembly includes a nozzle chamber having a floor and a roof, wherein moving portion of the roof is moveable towards the floor for ejection of ink. A thermal bend actuator defines part of the moving portion of the roof, and an active beam of the actuato...
05/06/2010
20100103216MEMS FLUID SENSOR
A fluid sensor for detecting fluid in a chamber, has a MEMS sensing element of conductive material with a resistance that is a function of temperature, and electrical contacts for connection to an electrical power source for heating the sensing element with an electrica...
04/29/2010
20100090296WAFER ASSEMBLY COMPRISING MEMS WAFER WITH POLYMERIZED SILOXANE ATTACHMENT SURFACE
A wafer assembly comprises a wafer having a MEMS layer formed on a frontside and a polymer coating covering the MEMS layer. A holding means is releasably attached to the polymer coating so that the wafer assembly facilitates performance of backside operations on a backs...
04/15/2010
20100091072Inkjet Printhead Nozzle Arrangement Having Non-Coincident Low Mass Electrode And Heater Element
An inkjet printhead nozzle arrangement includes side walls provided on a wafer substrate and a roof layer deposited on said side walls to define an ink chamber, the roof layer defining a nozzle aperture; an inlet defined in the substrate to supply the ink chamber with p...
04/15/2010
20100079556Inkjet Printer
An inkjet printer comprising: a printhead having a plurality of nozzles assemblies, each nozzle assembly comprising: a nozzle chamber for containing ink, the chamber having a nozzle opening and an ink inlet; and a bend actuator for ejecting ink droplets from the nozzle ...
04/01/2010
20100079549INKJET PRINTER WITH SMALL DROP SIZE
An inkjet printer configured for ejecting ink droplets having a volume in the range of 1 to 2.5 pL, the printer comprising: a printhead having a plurality of nozzles assemblies, each nozzle assembly comprising: a nozzle chamber for containing ink, the chamber having a n...
04/01/2010
20100079550EFFICIENT INKJET NOZZLE ASSEMBLY
An inkjet nozzle assembly comprising a nozzle chamber for containing ink, the chamber having a nozzle opening and an ink inlet; a pair of electrical contacts positioned at one end of the assembly and connected to drive circuitry; and a thermal bend actuator for ejecting...
04/01/2010
20100073430Ink Jet Nozzle Arrangement With A Segmented Actuator Nozzle Chamber Cover
A nozzle arrangement for an inkjet printer comprises a nozzle chamber; an ink supply channel for supplying ink to the nozzle chamber; a cover for covering the nozzle chamber, the cover defining an ink ejection port through which ink is ejected; a plurality of thermal be...
03/25/2010
20100073432Ink Jet Printhead Incorporating Heater Element Proportionally Sized To Drop Size
An inkjet printhead comprises a plurality of nozzles; a supply of printing fluid in fluid communication with the plurality of nozzles; and a plurality of heater elements corresponding respectively to each of the nozzles, the heater elements for heating the printing flui...
03/25/2010
20100045749Thermal Bend Actuator Comprising Bilayered Passive Beam
A thermal bend actuator comprises an active beam for connection to drive circuitry and a passive beam mechanically cooperating with the active beam. When a current is passed through the active beam, the active beam expands relative to the passive beam resulting in bendi...
02/25/2010
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