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| Number | Title | Issue Date |
| 8182071 | Thermal inkjet printhead and method of driving same Provided are an inkjet printhead and a method of driving the inkjet printhead. The inkjet printhead includes a heater configured to heat ink to produce ink bubbles, an electrode configured to apply or provide the current to the heater, and a resistor connected to th... | 05/22/2012 |
| 8172369 | Inkjet printhead substrate with distributed heater elements A substrate heating system for an inkjet printhead. The substrate heating system includes heating resistors distributed in association with the ink jet nozzle structures, and located thermally adjacent thereto. The plural switching transistors that control the curre... | 05/08/2012 |
| 8162446 | Print head The present invention provides a print head that allows the characteristics of ejected ink to be adjusted for each ejection port in spite of a variation in the distance from an ink supply port to the heating element. In the print head according to the present invent... | 04/24/2012 |
| 8118407 | Thermal inkjet printhead having annulus shaped heater elements A thermal inkjet printhead has an array of nozzle arrangements provided for ejecting ink. Each 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 i... | 02/21/2012 |
| 8100511 | Heater of an inkjet printhead and method of manufacturing the heater A heater of a thermal inkjet printhead. The heater is formed of tantalum aluminum oxynitride (Ta—Al—ON), wherein the tantalum aluminum oxynitride is formed of about 30 to about 60 atomic % tantalum, about 10 to about 30 atomic % aluminum, about 5 to about 30 ato... | 01/24/2012 |
| 8100512 | Printhead having planar bubble nucleating heaters A printhead is provided having a plurality of bubble forming chambers, ejection nozzles defined in the chambers, and heaters disposed in the chambers for heating bubble forming liquid in the chambers. Each heater has a bubble nucleation section of a smaller cross se... | 01/24/2012 |
| 8096643 | Fluid ejection device A fluid ejection device includes a fluid chamber, a resistor formed within the fluid chamber, and an orifice communicated with the fluid chamber, wherein the fluid ejection device is adapted to eject drops of a non-aqueous fluid, and wherein a ratio of a square root... | 01/17/2012 |
| 8087757 | Energy control of a nozzle of an inkjet printhead 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... | 01/03/2012 |
| 8075104 | Printhead nozzle having heater of higher resistance than contacts A printhead nozzle is provided having a plurality of electrodes, a heater having contacts abutting the electrodes, a heater element for heating a quantity of fluid and sloped side portions extending between the heater element and the contacts, and a nozzle spaced fr... | 12/13/2011 |
| 8066355 | Compact nozzle assembly of an inkjet printhead 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 shift register ... | 11/29/2011 |
| 8047633 | Control of a nozzle of an inkjet printhead 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 shift register ... | 11/01/2011 |
| 8042912 | Heater stack having resistive layer with underlying insulative gap and method for making heater stack A heater stack includes first strata configured to support and form a fluid heater element responsive to energy from repetitive electrical activation and deactivation to fire repetitive cycles of heating and ejecting fluid from an ejection chamber above the fluid he... | 10/25/2011 |
| 8029107 | Printhead with double omega-shaped heater elements An ink jet printhead has a plurality of nozzles and a bubble forming chamber corresponding to each of the nozzles respectively. The bubble forming chambers are adapted to contain a bubble forming liquid and a heater element is disposed in each of the bubble forming ... | 10/04/2011 |
| 8029106 | Inkjet printhead with heater elements having parallel current paths An inkjet printhead having an array of ink chambers is disclosed. Each ink chamber has a nozzle and a heater element for generating vapour bubbles to eject ink through the nozzle. The heater element has multiple current paths connected in parallel. Each current path... | 10/04/2011 |
| 8025367 | Inkjet printhead with titanium aluminium alloy heater An inkjet printhead with a resistive heaters for vaporizing ink to eject drops through respective nozzles. The heater is formed from a TiAlX alloy where Ti contributes more than 40% by weight, Al contributes more than 40% by weight and X contributes less than 5% by ... | 09/27/2011 |
| 8011760 | Inkjet printhead with suspended heater element spaced from chamber walls An inkjet printhead is provided having a substrate defining inlet passages, sidewalls extending from the substrate, and a nozzle plate supported by the sidewalls and defining nozzle apertures. The nozzle plate, the sidewalls and the substrate define chambers. The pr... | 09/06/2011 |
| 7997688 | Unit cell for thermal inkjet printhead A unit cell for a thermal inkjet printhead includes a substrate portion that defines an ink supply passage; drive circuitry and interconnect layers positioned on the substrate portion; a nozzle plate defining a nozzle; side walls depending from the nozzle plate and ... | 08/16/2011 |
| 7988261 | Printhead having layered heater elements and electrodes A printhead is provided having nozzles and heaters having heater elements and electrodes connecting current from a power source to the heater elements to heat, and form gas bubbles in, liquid within the nozzles which causes ejection of the liquid from the nozzles. T... | 08/02/2011 |
| 7984975 | Printhead nozzle cell having photoresist chamber A nozzle cell of a printhead is provided which has a multi-layer substrate defining a fluid inlet, side walls extending from the substrate around the fluid inlet and comprising walls of silicon nitride encapsulating hardened photoresist, an apertured roof supported ... | 07/26/2011 |
| 7984974 | Printhead integrated circuit with low voltage thermal actuators There is disclosed a printhead integrated circuit (IC) which comprises a plurality of nozzles and one or more heater elements 10 corresponding to each nozzle. Each heater element 10 is configured to heat a bubble forming liquid 11 in the printhe... | 07/26/2011 |
| 7980673 | Inkjet nozzle assembly with low density suspended heater element An inkjet nozzle assembly comprises: a nozzle chamber for containing ink, the nozzle chamber having a nozzle opening defined in a roof thereof; and a bubble-forming heater element positioned in the nozzle chamber. The heater element is suspended in the nozzle chambe... | 07/19/2011 |
| 7980674 | Printhead incorporating pressure pulse diffusing structures between ink chambers supplied by same ink inlet An inkjet printer includes a printhead having a plurality of ink chambers fed be an ink inlet, each ink chamber having a heater element for ejecting drops of ink from a nozzle aperture of each chamber; a plurality of pressure pulse diffusing structure positioned bet... | 07/19/2011 |
| 7976131 | Printhead integrated circuit comprising resistive elements spaced apart from substrate A printhead integrated circuit includes inkjet nozzle assemblies disposed on a substrate. Each nozzle assembly includes a nozzle chamber having a nozzle aperture and an actuator associated with the nozzle chamber. The actuator ejects an ink droplet from the nozzle a... | 07/12/2011 |
| 7971975 | Inkjet printhead comprising actuator spaced apart from substrate An inkjet printhead including a substrate and a plurality of nozzle assemblies disposed on the substrate. Each nozzle assembly includes a nozzle chamber for containing ink and an actuator for ejecting an ink droplet from a nozzle aperture when a resistive element of... | 07/05/2011 |
| 7971974 | Printhead integrated circuit with low loss CMOS connections to heaters A printhead IC with an array of nozzles 3. A chamber 7 and a heater 14 correspond to each nozzle respectively. The heater has a heater element 10 extending between a pair of electrodes 15. The heater element 10 is suspended ... | 07/05/2011 |
| 7967421 | Ink jet print head and method for manufacturing ink jet print head The present invention provides an ink jet print head that enables an optimum resistance value to be set for a heating resistor that generates ink ejection energy to allow high-quality images to be printed, as well as a method for manufacturing the ink jet print head... | 06/28/2011 |
| 7967422 | Inkjet nozzle assembly having resistive element spaced apart from substrate An inkjet nozzle assembly includes a nozzle chamber positioned on a substrate and an actuator for ejecting an ink droplet from a nozzle aperture when a resistive element of the actuator is heated by an electrical current. The resistive element of the actuator is spa... | 06/28/2011 |
| 7950779 | Inkjet printhead with heaters suspended by sloped sections of less resistance An inkjet printhead that has a pair of electrodes, a heater having contacts abutting the pair of electrodes, a heater element for generating a vapor bubble in a quantity of ink and sloped side portions extending between the heater element and the contacts and, a noz... | 05/31/2011 |
| 7901056 | Printhead with increasing drive pulse to counter heater oxide growth An inkjet printer that has a printhead with an array of ejection devices for ejecting drops of liquid onto a media substrate. Each of the ejection devices having a chamber for holding liquid, a nozzle in fluid communication with the chamber and a heater positioned i... | 03/08/2011 |
| 7896476 | Inkjet printhead board and inkjet printhead using same An inkjet printhead board and inkjet printhead is provided having a reliable storage element which allows for print without causing damages to an interlayer insulation film and protection film upon printing data unique to the printhead and is free from the restricti... | 03/01/2011 |
| 7874646 | MEMS bubble generator incorporating superalloy heater in direct contact with bubble formation liquid without intervening protective coating A MEMS vapor bubble generator includes a chamber for holding liquid; and a heater positioned in the chamber, the heater being formed using a sputtering technique. The heater is formed from a superalloy material. The superalloy material of the heater is in direct con... | 01/25/2011 |
| 7862157 | Ink jet recording head An ink jet recording head includes ejection resistors for generating thermal energy for ejecting ink; warming resistors for generating thermal energy for heating the ink; ejection outlets, provided correspondingly to the ejection resistors, for ejecting the ink; and... | 01/04/2011 |
| 7862156 | Heating element Embodiments of a heating element of a fluid ejection device are disclosed. ... | 01/04/2011 |
| 7837303 | Inkjet printhead An inkjet printhead includes a substrate having an ink feed hole formed therethrough and a plurality of ink drop generators formed on the substrate. The drop generators define a stagger pattern, and the ink feed hole defines a sidewall that is shaped so as to match ... | 11/23/2010 |
| 7832844 | Printhead having efficient heater elements for small drop ejection A printhead is provided having a plurality of nozzles and a plurality of heater elements each for heating an ejectable liquid to cause ejection of a drop of the ejectable liquid from a respective one of the nozzles. Each heater element is configured such that drops ... | 11/16/2010 |
| 7824017 | Printhead and method for controlling temperatures in drop forming mechanisms An apparatus and method for controlling temperature profiles in ejection mechanisms is provided. A heater includes a first resistor segment having an electrical resistivity, a second resistor segment; and a coupling segment positioned between the first resistor segm... | 11/02/2010 |
| 7798611 | Circuit routing for printhead having increased corrosion resistance The present invention includes as one embodiment an ink jet printhead having a circuit with plural resistors and a power bus. The printhead includes a metal stack formed within the circuit, which is comprised of a first metal layer and a second metal layer and at le... | 09/21/2010 |
| 7794058 | Liquid discharge head and method for manufacturing the same In order to hermetically seal more surely a gap between a back surface of a liquid discharge substrate and a front surface of a support member, and an electrode portion etc., without adversely affecting discharge performance, a liquid discharge head includes a first... | 09/14/2010 |
| 7784915 | MEMS device with nanocrystalline heater A MEMS vapor bubble generator with a chamber for holding liquid and a heater positioned in the chamber for heating the liquid above its bubble nucleation point to form a vapor bubble; wherein, the heater has a microstructure with a... | 08/31/2010 |
| 7780270 | Heating structure with a passivation layer and inkjet printhead including the heating structure A heating structure of an inkjet printhead and an inkjet printhead including the heating structure. The heating structure includes a substrate, a heater formed on the substrate, an electrode formed on the heater, a passivation layer formed to cover the heaters and t... | 08/24/2010 |
