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| Number | Title | Issue Date |
| 7901046 | Thermal bend actuator comprising conduction pads A thermal bend actuator is provided. The bend actuator comprises (i) a first active cantilever beam for connection to drive circuitry, the first beam comprising a planar beam element having a bend; (ii) a second passive cantilever beam mechanically cooperating with ... | 03/08/2011 |
| 7901051 | Inkjet nozzle assembly having thermoelastic actuator beam disposed on nozzle chamber roof An inkjet nozzle assembly comprises a nozzle chamber having a floor and a roof, the roof having a nozzle opening defined therein. A moving portion defines part of the roof so that the moving portion is moveable towards the floor. A thermal actuator defines part of t... | 03/08/2011 |
| 7901047 | Micro-electromechanical nozzle arrangement with an actuating mechanism having a shutter member Provided is a micro-electromechanical nozzle arrangement for an inkjet printer. The arrangement includes a substrate having a layer of drive circuitry disposed thereon with a passivation layer on top of the drive circuitry layer, the substrate defining an ink inlet ... | 03/08/2011 |
| 7901052 | Thermal 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 b... | 03/08/2011 |
| 7896473 | Low pressure nozzle for an inkjet printer A nozzle assembly for an inkjet printhead is disclosed. The nozzle assembly includes an inkjet nozzle having an actuator for ejecting an ink droplet from the inkjet nozzle when a resistive element of the actuator is heated by an electrical current. A drive transisto... | 03/01/2011 |
| 7891779 | Inkjet printhead with nozzle layer defining etchant holes The current invention provides for an inkjet printhead for an inkjet printer. The inkjet printhead includes a wafer substrate defining an ink supply channel. Side wall portions extend away from one surface of the wafer substrate, and a nozzle layer supported on the ... | 02/22/2011 |
| 7891776 | Nozzle arrangement with different sized heater elements A nozzle arrangement for ejecting ink comprises a substrate assembly defining an ink supply passage and incorporating a drive circuitry layer; a heater positioned on the substrate assembly, the heater having a pair of heater elements connected to electrical contacts... | 02/22/2011 |
| 7891778 | Inkjet printhead assembly for symmetrical vapor bubble formation An inkjet printhead assembly comprises a substrate defining a plurality of ink inlet passages; drive circuitry arranged on the substrate; a plurality of nozzle chamber structures arranged on the substrate and defining (i) nozzle chambers in fluid communication with ... | 02/22/2011 |
| 7891777 | Inkjet printhead with heaters mounted proximate thin nozzle layer An inkjet printhead for ejecting drops of a printing fluid onto a media substrate. The inkjet printhead has an array of nozzle apertures defined in a nozzle layer less than 10 microns thick and a heater element adjacent each of the nozzles respectively for heating p... | 02/22/2011 |
| 7891774 | Printhead having low pressure rise nozzles A printhead is provided having a plurality of chambers on a substrate which each have a nozzle, a heater arranged in each chamber so as to heat fluid within the chamber to form a gas bubble therein and thereby cause ejection of a drop from the corresponding nozzle, ... | 02/22/2011 |
| 7891773 | Low voltage nozzle assembly for an inkjet printer A nozzle assembly for an inkjet printhead is disclosed. The nozzle assembly includes an inkjet nozzle having an actuator for ejecting an ink droplet from the inkjet nozzle when a resistive element of the actuator is heated by an electrical current. A drive transisto... | 02/22/2011 |
| 7891775 | Inkjet drop ejection apparatus with radially extending thermal actuators An inkjet drop ejection apparatus comprises an array of ink ejection nozzles; a chamber corresponding to each ink ejection nozzle and for storing ink; and a plurality of actuators provided on top of each chamber, the actuators radially extending out from a common ce... | 02/22/2011 |
| 7887161 | Inkjet printhead having an array of displacable nozzles An inkjet printhead with an array of nozzle assemblies (10) formed on a supporting substrate (16). Each nozzle has a chamber (34) for holding ink, each nozzle chamber being partially defined by the nozzle that defines a nozzle opening (24... | 02/15/2011 |
| 7887160 | Inkjet printhead with two-part body structure containing heater elements An inkjet printhead includes a “first part” wafer assembly. The wafer assembly defines an elongate ink supply channel and an ink inlet extending from the ink supply channel. A “second part” chamber roof layer is supported by the wafer assembly. The chamber r... | 02/15/2011 |
| 7883182 | Fluid ejection device for ink jet heads A fluid ejection device that can be used for inkjet heads is described. A large actuator with a small stroke in combination with hydraulic pressure transfer by means of essentially relatively incompressible fluid is used in order to generate a large stroke of a smal... | 02/08/2011 |
| 7883183 | Inkjet nozzle assembly with actuatable nozzle chamber A nozzle assembly for an inkjet printhead includes a substrate assembly defining an ink inlet aperture; a nozzle comprising a wall portion extending from the substrate assembly to bound the ink inlet aperture, and a moveable crown portion from which a skirt portion ... | 02/08/2011 |
| 7866796 | Solenoid valve A solenoid valve making use of certain materials which is capable of operation at high frequencies and which can be made as a compact unit. The plunger (1) is made from a material having a saturation flux density greater than 1.4 Tesla preferably more than 1.... | 01/11/2011 |
| 7866797 | Inkjet printhead integrated circuit An inkjet printhead integrated circuit includes a substrate. A drive circuitry layer is positioned on the substrate, the substrate and the drive circuitry layer defining a plurality of ink inlet channels. Nozzle chamber walls and roofs spanning the nozzle chamber wa... | 01/11/2011 |
| 7857426 | Micro-electromechanical nozzle arrangement with a roof structure for minimizing wicking Provided is 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, said substrate having ... | 12/28/2010 |
| 7854496 | Inkjet 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... | 12/21/2010 |
| 7850281 | Efficient 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 ejec... | 12/14/2010 |
| 7850282 | Nozzle arrangement for an inkjet printhead having dynamic and static structures to facilitate ink ejection Provided is a nozzle arrangement for an inkjet printhead. The nozzle arrangement includes a substrate with side walls and a roof portion together forming an ink chamber, the substrate defining an ink supply channel leading to the ink chamber, with one side wall defi... | 12/14/2010 |
| 7850283 | Printhead with liquid flow through device A liquid drop ejector is disclosed including a nozzle structure and a thermal actuator. The nozzle structure includes a nozzle and a wall. The nozzle includes an end and the wall extends from the end of the nozzle. The thermal actuator is associated with at least on... | 12/14/2010 |
| 7845763 | Printhead assembly with minimal leakage A laminated film for attachment of printhead integrated circuits to an ink supply manifold. The film has a plurality of ink supply holes defined therein and film comprises: a central polymeric web; a first adhesive layer for bonding a first surface of the film to th... | 12/07/2010 |
| 7845764 | Inkjet printhead having nozzle arrangements with actuator pivot anchors Provided is an inkjet printhead having a plurality of nozzle arrangements for ejecting ink onto a printing medium. Each nozzle arrangement includes a substrate defining an ink chamber having an ink inlet and a plurality of ink ejection ports, the chamber and ink sup... | 12/07/2010 |
| 7824016 | Pagewidth printhead arrangement with a controller for facilitating weighted ink drop ejection Provided is a pagewidth printhead arrangement for an inkjet printer having a print engine controller. The arrangement has a wafer substrate that defines a plurality of ink inlets. A plurality of nozzles each including side walls are located on a wafer substrate with... | 11/02/2010 |
| 7824015 | Ink jet writing head An ink jet writing head includes a pressurized ink chamber provide with at least one ink nozzle that is closed by a mobile valve body. A piezoelectric valve actuating device that is electrically connected to a control device drives the valve body with reciprocating ... | 11/02/2010 |
| 7815289 | Micro-fluid ejection heads and methods for bonding substrates to supports A substantially planar micro-fluid ejection device, where the micro-fluid ejection head is hermetically sealed and bonded to a support material, and a method of bonding a silicon device, such as a micro-fluid ejection head, to a support material. ... | 10/19/2010 |
| 7815290 | Inkjet printhead with paddle for ejecting ink from one of two nozzles An inkjet printhead includes a nozzle chamber structure defining a nozzle chamber. The nozzle chamber structure further defines a pair of ink ejection nozzles and an ink supply channel in fluid communication with the nozzle chamber. A movable paddle is disposed with... | 10/19/2010 |
| 7815291 | Printhead integrated circuit with low drive transistor to nozzle area ratio A inkjet printhead integrated circuit that has a wafer substrate with a fluid ejection surface, and an array of drop ejectors for ejecting drops of printing fluid onto a media substrate, the array being formed on the fluid ejection surface of the wafer substrate. Ea... | 10/19/2010 |
| 7810909 | Liquid drop jet apparatus and image forming apparatus capable of improving image quality and reducing cost A liquid drop jet apparatus is provided which includes a plurality of nozzles to jet out a liquid droplet, a liquid room corresponding to the nozzles, a liquid supply path to supply a liquid into the liquid room, a vibration board to apply a pressure to the liquid i... | 10/12/2010 |
| 7802871 | Ink jet printhead with amorphous ceramic chamber A nozzle arrangement for use in an integrated circuit device is provided. The nozzle arrangement comprises a wafer substrate, a nozzle chamber wall disposed on the substrate, which with a roof wall defines a nozzle chamber, the roof wall forming an ejection port tha... | 09/28/2010 |
| 7798610 | Ink jet printing head A groove for a separate liquid chamber opening is provided in the vicinity of a location in a first separate liquid chamber to which a cantilever element is fixed and the groove extends overall in a vertical direction of the separate liquid chamber. The flow resista... | 09/21/2010 |
| 7794053 | Inkjet printhead with high nozzle area density Inkjet printheads with high nozzle areal density are disclosed. Various structures are shown where the areal density of nozzles is greater than 200 million per square meter. ... | 09/14/2010 |
| 7784910 | Nozzle arrangement incorporating a thermal actuator mechanism with ink ejection paddle A nozzle arrangement is provided for an inkjet printhead. The nozzle arrangement includes a substrate assembly defining an ink supply channel. A nozzle chamber structure extends from the substrate assembly. The nozzle chamber structure defines a nozzle chamber in fl... | 08/31/2010 |
| 7780268 | Liquid transport apparatus A liquid transport apparatus includes liquid transport channels disposed on an insulating surface of a substrate, individual electrodes disposed in regions corresponding to respective ones of the liquid transport channels, and wiring portions extending along the ins... | 08/24/2010 |
| 7780267 | Recording head for ink-jet recording apparatus A recording head configured to discharge ink from a nozzle includes a cantilever and a liquid chamber. The cantilever has a free end and a fixed end and bends to generate a pressure for discharging ink. The liquid chamber communicates with the nozzle. The cantilever... | 08/24/2010 |
| 7775636 | Nozzle arrangement having partially embedded heated elements A nozzle arrangement is provided for ejecting ink. The nozzle arrangement includes a substrate assembly defining an ink inlet passage. A nozzle chamber structure extends from the substrate assembly to define a nozzle chamber in fluid communication with the ink inlet... | 08/17/2010 |
| 7775635 | Method of producing thermoelastic inkjet actuator A method of producing a thermoelastic actuator assembly having desired operating characteristics includes determining a desired negative pressure pulse characteristic for the actuator, determining a heat dissipation profile corresponding to the desired negative pres... | 08/17/2010 |
| 7775634 | Inkjet chamber with aligned nozzle and inlet An inkjet drop ejection apparatus having a chamber with a nozzle and an ink inlet for fluid communication with an ink supply; and an actuator with associated drive circuitry for ejecting drops of ink through the nozzle; wherein, | 08/17/2010 |
