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| Number | Title | Issue Date |
| 8136928 | Generation of drops for inkjet printing The generator according to the invention operates by strong stimulation in the form of pulses (τ) so as to generate drops, particularly for ink jet printing purposes. This choice enables breaking the jet (30) close to the ejection (16) and reduces the... | 03/20/2012 |
| 8104878 | Phase shifts for two groups of nozzles A method includes forming drops of first size by applying drop-forming pulses during unit time period, τ0; forming drops of second size by applying drop-forming pulses during second size drop time period, τm, wherein the second sized drop time period is... | 01/31/2012 |
| 7758171 | Aerodynamic error reduction for liquid drop emitters A method is disclosed for forming a liquid pattern including forming non-print drops by applying non-print drop forming energy pulses during a unit time period, τ0, and forming print drops by applying print drop forming energy pulses during a large drop ... | 07/20/2010 |
| 7438396 | Inkjet printing method and apparatus A method and apparatus for inkjet printing by means of a plurality of inkjet nozzles arranged in at least one row and having spaced, parallel nozzle axes for emitting liquid ink drops towards the substrate, and multi-level charging and deflecting plates controlled t... | 10/21/2008 |
| 7401906 | Ink jet break-off length controlled dynamically by individual jet stimulation A jet break-off length control apparatus for a continuous liquid drop emission system is provided. The jet break-off length control apparatus comprises a liquid drop emitter containing a positively pressurized liquid in flow communication with at least one nozzle fo... | 07/22/2008 |
| 7368130 | Microparticles A method of forming particles comprises accelerating a stream comprising a liquid; and vibrating the stream, to form particles. The particle may have a diameter that is smaller than the diameter of the nozzle used to form the stream, allowing for the formation of mi... | 05/06/2008 |
| 7364276 | Continuous ink jet apparatus with integrated drop action devices and control circuitry A continuous liquid drop emission apparatus is provided. The liquid drop emission apparatus is comprised of a liquid chamber containing a positively pressurized liquid in flow communication with at least one nozzle for emitting a continuous stream of liquid and a je... | 04/29/2008 |
| 7364277 | Apparatus and method of controlling droplet trajectory A printhead has a fluid chamber having an orifice, an associated fluid drop forming mechanism, and an associated fluid drop steering device. The fluid drop forming mechanism is operable to apply to fluid present in the fluid chamber energy sufficient to cause a flui... | 04/29/2008 |
| 7354141 | Acoustic assessment of characteristics of a fluid relevant to acoustic ejection Methods are provided for analyzing characteristics of fluids in the context of an acoustic ejection system. Such a system has a controller, an acoustic radiation generator, and a coupling medium coupling the radiation to a reservoir holding fluid. The methods can us... | 04/08/2008 |
| 7350900 | Top feed droplet generator An ink jet droplet generator body for an ink jet droplet generator comprising an orifice plate with a plurality of nozzles forming a jet array entails a throughbore with an entrance and exit port, the throughbore provides a path through that flows fluid from a fluid... | 04/01/2008 |
| 7334874 | Inkjet nozzle chamber with electrostatically attracted plates An inkjet drop ejection apparatus with a chamber with a nozzle; and spaced electrodes. The electrodes are mounted such that application of a voltage across the electrodes causes the electrodes to move relative to each other in order to eject drops of ink through sai... | 02/26/2008 |
| 7334880 | Method of driving a droplet jetting head A method of driving a droplet jetting head comprising nozzle orifices to jet droplets, pressure generating chambers each of which can store liquid and communicate with one of the orifices, and pressurizing devices to change the pressures of the pressure generating c... | 02/26/2008 |
| 7309500 | Microparticles A method of forming particles, comprises accelerating a first stream comprising a first liquid, applying a charging voltage of at most 1.5 kV to the first stream, and vibrating the first stream, to form particles. ... | 12/18/2007 |
| 7300861 | Method for interconnecting electronic components using a blend solution to form a conducting layer and an insulating layer An improved method of interconnecting electronic devices is described. In the method a blended material for forming a conducting layer and an insulating layer are deposited between a contact of a first electronic device and a second electronic device. The blended ma... | 11/27/2007 |
| 7282665 | Method and apparatus for processing articles with a laser beam A method for joining workpieces by welding with laser light, in which a plurality of workpieces are arranged between a lower pressure plate and a translucent upper pressure plate on a multiplicity of supporting segments movable in a vertical direction, whereby the w... | 10/16/2007 |
| 7273270 | Ink jet printing device with improved drop selection control An ink jet printing system includes a printhead generating a plurality of continuous ink jets that are in a row and directed toward a print receiving medium. The printhead contains a drop generator and an orifice plate that includes a plurality of nozzles to form th... | 09/25/2007 |
| 7273269 | Suppression of artifacts in inkjet printing A method of printing is provided. The method includes providing a travel path comprising a direction of motion of a printhead relative to a recording medium, the printhead having a linear array of nozzles positioned at a nonzero angle relative to the travel path; as... | 09/25/2007 |
| 7261396 | Continuous inkjet printer having adjustable drop placement A method of printing includes associating a pixel area of a recording medium with a nozzle and a time interval during which a fluid drop ejected from the nozzle can impinge the pixel area of the recording medium; dividing the time interval into a plurality of subint... | 08/28/2007 |
| 7252372 | Liquid ejection apparatus and ejection control method The liquid ejection apparatus comprises: an ejection head having ejection holes which eject liquid droplets to land on an ejection receiving medium; a conveyance device which causes the ejection head and the ejection receiving medium to move relative to each other i... | 08/07/2007 |
| 7249818 | Print head apparatus with malfunction detector A print head and method that are capable of detecting a plurality of performance conditions such as a dry-fire, no-fire or clogged-nozzle condition. Pressure wave sensors within a print head are disclosed that are capable of detecting pressure waves generated by the... | 07/31/2007 |
| 7249829 | High speed, high quality liquid pattern deposition apparatus A drop deposition apparatus for laying down a patterned liquid layer on a receiver substrate, for example, a continuous ink jet printer, is disclosed. The liquid deposition apparatus comprises a drop emitter containing a positively pressurized liquid in flow communi... | 07/31/2007 |
| 7249830 | Ink jet break-off length controlled dynamically by individual jet stimulation A jet break-off length control apparatus for a continuous liquid drop emission system is provided. The jet break-off length control apparatus comprises a liquid drop emitter containing a positively pressurized liquid in flow communication with at least one nozzle fo... | 07/31/2007 |
| 7246890 | Detection device for detecting ejection condition of nozzles When an refresh ink droplet ejected from a nozzle and deflected by an inclined electric field impinges on a orifice electrode/ink receiving member, electric charge is discharged from the refresh ink droplet, thereby an electric current is generated. A current-voltag... | 07/24/2007 |
| 7244007 | Capacitive load driving circuit, droplet ejection device, droplet ejection unit and inkjet head driving circuit A capacitive load driving circuit which includes an operational amplifier, a pulse width modulator, a digital power amplifier, a first filter, a first feedback circuit and a second feedback circuit. The operational amplifier outputs a differential signal between a s... | 07/17/2007 |
| 7207659 | Nozzle arrangement for an inkjet printhead with ink passivation structure A nozzle arrangement for an inkjet printhead includes a wafer substrate defining an ink passage and incorporating drive circuitry. A passivation layer is operatively positioned on the substrate and defines a first aperture of lesser cross sectional area than the ink... | 04/24/2007 |
| 7195333 | Ink jet print station with improved start up and a method for starting up inkjet printers An ink jet print station with improved start-up reliability includes an ink reservoir and a printhead. The printhead has at least two drop generators, a return line connected to the generator's fluid ports, an orifice plate connected to the drop generator for formin... | 03/27/2007 |
| 7192121 | Inkjet printer A printer head of an ink jet printer is provided with an internal stimulation system with which it is possible to create in an upstream breaking position of a jet, an upstream break-up forming in a zero potential area, drops which will be used for printing, and jet ... | 03/20/2007 |
| 7185969 | Droplet dispensation from a reservoir with reduction in uncontrolled electrostatic charge Devices and methods are provided for reducing the uncontrolled electrostatic charges that can alter the volume and/or trajectory of a droplet, which is typically ejected through the application of focused acoustic radiation. Also provided are reservoirs and substrat... | 03/06/2007 |
| 7163281 | Method for improving drop charging assembly flatness to improved drop charge uniformity in planar electrode structures An improved continuous ink jet print station includes a drop generator with a jet array and a drop charging assembly. The drop charging assembly includes a substrate with a first side facing the jet array, and one or more resistive heater elements placed on the subs... | 01/16/2007 |
| 7147307 | Printhead IC with actuator movement parallel to ink inlet flow An inkjet printhead IC is fabricated using a wafer substrate that defines a plurality of ink inlet channels. A plurality of nozzle structures fabricated on the substrate to define nozzle chambers are in fluid communication with the ink inlet channels and an ink ejec... | 12/12/2006 |
| 7144102 | Supression of Marangoni Effect on the catcher face The method for controlling ink migration onto a catcher of an ink jet print station from catch condition using a low surface tension ink entails bringing an ink jet print station using low surface tension ink into catch condition with the eyelid sealably engaging th... | 12/05/2006 |
| 7137679 | Ink consumption detecting method, and ink jet recording apparatus The present method detects an ink consumption condition in an ink cartridge loaded on an ink jet recording apparatus having a recording head for jetting ink drops, using a piezo-electric device mounted on the cartridge. The method detects the ink consumption conditi... | 11/21/2006 |
| 7118196 | Ink jet recording method When a drive frequency for an electrode used to cause an electrostatic force to act on an ink composition is assigned A, and a division frequency for a thread is assigned B, a relationship of A≧5 kHz and B/A≧5 is met, and a division frequency for the thread is r... | 10/10/2006 |
| 7108197 | Droplet ejector with oscillating tapered aperture A fluid injection device for ejecting fluid droplets in response to electrical signals comprises an oscillating surface that has one or more tapered apertures, each aperture having a first and second opening. The first opening of each aperture is larger than the sec... | 09/19/2006 |
| 7105295 | Methods for applying small volumes of reagents Methods, devices and apparatus are disclosed for carrying out multiple chemical reactions, such as in situ synthesis of polynucleotides, on a surface comprising an array of discrete sites. Molecules are deposited at a predetermined number of the discrete sites on th... | 09/12/2006 |
| 7101099 | Printing head, head cartridge having printing head, printing apparatus using printing head, and printing head substrate A printing head which outputs an output from a sensor device provided for monitoring various condition of a printing head as digital data, and a printing apparatus using the printing head. The output from the device for detecting condition of the printing head, e.g.... | 09/05/2006 |
| 7085002 | Defective nozzle compensation An image recording apparatus (2000) is disclosed, which comprises forming elements (2002) for forming an image, a memory (2006) indicating relative desirability of utilising the forming elements (2002) for forming the image, and processin... | 08/01/2006 |
| 7080897 | System for delivering material onto a substrate A system for delivering material onto a substrate. The system includes a jetting system having a reservoir containing the material and the reservoir includes a nozzle through which the material is expelled from the reservoir. An arcuate section is positioned between... | 07/25/2006 |
| 7077492 | Method and device for optical sensor compensation, and apparatus incorporating the same An optical sensor has a sensor compensation to compensate for sensor degradation due to airborne contaminations in the operating environment. For example, in a thermal ink jet printing environment, the thermal ink jet operation produces misting or splashing of the t... | 07/18/2006 |
| 7077507 | Micro-electromechanical liquid ejection device A micro-electromechanical liquid ejection device includes a wafer substrate that incorporates drive circuitry and that defines a liquid inlet. A nozzle chamber structure is positioned on the wafer substrate and defines a nozzle chamber in fluid communication with th... | 07/18/2006 |
