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Class 347/81 - Drop sensors


Subclass of Class 347 - Incremental printing of symbolic information
Definition: Subject matter wherein specific detection means are provided
No. of patents: 76
Last issue date: 04/28/2009


1    
NumberTitleIssue Date
7524042Ink jet printers and methods
A method and apparatus for printing a desired pattern on a substrate by discharging continuous streams of liquid ink drops from nozzles towards the substrate, and selectively charging the liquid ink drops with multi-level charges deflecting them different amounts. S...
04/28/2009
7367230Flow rate detector and flow controller
A path detector is constructed so that a path block body, which forms a given path and which has a flow sensor interposed in the path, and a circuit board having an electric circuit mounted thereon are accommodated in a rectangular parallelepiped or cubic housing. A...
05/06/2008
7364276Continuous 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
7328983Ink-jet printer and method of controlling ink-jet printer
An ink-jet printer, including an ink-jet recording head having an ink inflow passage including an ink inlet, and an air-discharge passage which allows the ink inflow passage to communicate with an atmosphere; an air-discharge valve which selectively opens and closes...
02/12/2008
7276380Transparent liquid inspection apparatus, transparent liquid inspection method, and transparent liquid application method
The present invention provides a transparent liquid inspection apparatus capable of identifying a boundary between a transparent liquid applied on a base material which provides a multi-piece product and the base material, and automatically inspecting an applied con...
10/02/2007
7267418Ink jet printer
An ink jet printer for recording an image on a recording medium by jetting ink from nozzles having: an ink jet section which is provided with the nozzles; and an ink droplet detection section for detecting an impact force generated when an ink droplet jetted from th...
09/11/2007
7249830Ink 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
7246890Detection 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
7239125Method and apparatus for electronic meter testing
An electronic energy meter senses input voltage and current signals and processes the input voltage and current signals to generate measurements of multiple types of power. The meter comprises a processing system for selecting one of the multiple types of power and ...
07/03/2007
7223309Display manufacturing apparatus and display manufacturing method
A carriage 5 is provided with an injection head 7 to discharge an amount of liquid drops according to the supplied driving pulses and a liquid material sensor 17 to detect the ink amount hit at a filter substrate at each pixel region. A main con...
05/29/2007
7182442Ink jet printing apparatus
Ink jet printing apparatus includes a linear array of jet modules each having an inlet for receiving ink, an outlet for re-circulating the ink, a nozzle for discharging ink in the form of droplets, and a perturbation device for causing a continuous stream of ink dro...
02/27/2007
7175263Converging axis dual-nozzled print head and printer fitted therewith
A twin-nozzle print head for a continuous inkjet deflection printer comprises an ink drop generator assembly having two inkjet ejection nozzles, each of the nozzles having an ejection axis. Charge electrodes, deflection electrodes deflecting charged drops and a sing...
02/13/2007
7164436Liquid ejection apparatus
A liquid ejection apparatus includes liquid cartridges, each of which includes a liquid container and a pressure chamber, the liquid container having a flexible portion and storing liquid therein, and the pressure chamber applying pressure to the flexible portion of...
01/16/2007
7163281Method 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
7147310Printing-fluid container
A printing-fluid container includes a reservoir having a leading surface with an outer perimeter. Redundant interface elements are recessed from the leading surface interior the outer perimeter. ...
12/12/2006
7121642Drop volume measurement and control for ink jet printing
A system and method is presented for measuring the volume of an ink-jet droplet or the relative volumes of a plurality of ink-jet droplets using their electrical properties. In a preferred embodiment a single small capacitor or an array of capacitors is used to meas...
10/17/2006
7101508Chemical array fabrication errors
A method of fabricating an addressable array of chemical probes at respective feature locations on a substrate surface. The method may use a deposition apparatus with a substrate unit which includes the substrate and with a drop deposition unit which includes a drop...
09/05/2006
7004572Ink jet printing system with interleaving of swathed nozzles
Disclosed is a continuous ink jet printer that includes an ink jet printing nozzle for a first color positioned to deposit ink drops on a substrate, and a deflection element located proximate an output trajectory of the first ink jet printing nozzle and operative to...
02/28/2006
6988783Liquid detection method, liquid detection apparatus and printing apparatus using the liquid detection
An inkjet printing apparatus is adapted to use a non-contact method for detecting the presence and the amount of liquid, in the form of ink droplets discharged from a printhead or ink tank, using electromagnetic waves in the form of infrared rays. The apparatus and ...
01/24/2006
6969159Ink drop detector configurations
A sensor configuration for use in detecting ink droplets ejected from an ink drop generator is provided. The sensor configuration includes a sensing element configured to receive a biasing voltage which creates an electric field from the sensing element to the ink d...
11/29/2005
6935717Ink drop detector configurations
A sensor configuration for use in detecting ink droplets ejected from an ink drop generator is provided. The sensor configuration includes a sensing element configured to receive a biasing voltage which creates an electric field from the sensing element to the ink d...
08/30/2005
6897466Instrument and method for measuring ejection velocity of liquid
In an apparatus for measuring an ejection velocity of a liquid droplet ejected from a nozzle orifice of a head device which is provided with a pressure chamber communicated with the nozzle orifice and an actuator which varies pressure of liquid contained in the pres...
05/24/2005
6858860Apparatus and method for measuring natural period of liquid
In an apparatus for measuring a natural period of liquid in a pressure chamber formed in a head device which is provided with a nozzle orifice communicated with the pressure chamber and an actuator which varies pressure of the liquid contained in the pressure chambe...
02/22/2005
6769756Ink drop detector configurations
A sensor configuration for use in detecting ink droplets ejected from an ink drop generator is provided. The sensor configuration includes a sensing element configured to receive a biasing voltage which creates an electric field from the sensing element to the ink d...
08/03/2004
6767088Methods and systems for detecting and determining trajectories of ink droplets
Methods and systems for detecting ink droplets ejected by a printer, and for determining if the trajectory of an ink droplet deviates from a desired trajectory. In one embodiment, the ink droplet trajectory detector has multiple electrically conductive, electrically...
07/27/2004
6764168Sensor for detecting droplet characteristics
In one embodiment, a sensor includes two plates that form a capacitor. A droplet passing between the plates changes the capacitance of the sensor, thereby triggering an amplifier coupled to the sensor to generate an output signal. The output signal is indicative of ...
07/20/2004
6761429Bulldozing cleaner for inkjet electrostatic drop detectors
A bulldozer-type cleaning system is provided for removing ink residue from an electrostatic drop detecting sensor which detects ink droplets contacting the detector. A scraper head scrapes the ink residue from the sensor, and then contacts a flexible, compliant clea...
07/13/2004
6726318Microscopic droplet detecting device and ink-jet recording apparatus
A microscopic droplet detecting device for detecting a passage of droplets jetted from a nozzle of an ink jetting device, including a droplet detecting section including a paired light emitting and receiving elements, a jet control section to control the ink jetting...
04/27/2004
6692099Testing nozzles in print heads
A printer device having a plurality of print heads for printing onto a print medium. Each of the print heads having a plurality of nozzles formed into at least two rows. A service station housed within the printer device having a plurality of service stat...
02/17/2004
6641246Detection of non-operating nozzle by light beam passing through aperture
The object is to provide a technique whereby a non-operating nozzle can be detected with higher accuracy. The present invention resides in a printer for printing images by ejecting ink droplets from a plurality of nozzles, wherein an optical path in which...
11/04/2003
6608698Printing apparatus and method for saving printing material
A method and apparatus for printing rasterized images while economizing printing resources, on the basis of input image data corresponding to a predetermined original format, are provided. The method includes reducing the input image relative to the origi...
08/19/2003
6578946Movable ink drop detector pick up for a drop-on-demand printer
The present invention is directed to a system and method for a waste ink removal apparatus for cleaning ink residue from an ink drop detection sensor in a printing mechanism, comprising an assembly pivotally supported by a pivot, the assembly pivoting bet...
06/17/2003
6550887Ink drop detector
An apparatus for detecting ink droplets ejected from ink drop generators has a target holder and a conductive absorbent target supported by the target holder. The apparatus for detecting ink droplets also has standoffs extending from the target holder. Th...
04/22/2003
6545773Compensation for print-direction induced hue shift using depletion
Color printheads in a color inkjet printer are in a fixed order in the scanning carriage, which causes the colors to be printed in a different order when the carriage is scanned in an opposite direction. The different print order may result in a perceptib...
04/08/2003
6533377Cleaning system for cleaning ink residue from a sensor
A cleaning system is provided for cleaning ink residue from a sensor in a printing mechanism which deposits ink on the sensor, which comprises a scraper member having a head which, through relative motion of the head and sensor, gathers ink residue from t...
03/18/2003
6447108Continuous inkjet printhead control
A method is disclosed for controlling a multi-nozzle CIJ printhead having a pressure modulator for causing streams of ink emitted from the nozzles to be broken up into individual droplets, and charge electrodes 6 and charge electrode controllers for contr...
09/10/2002
6435645Charged droplet position determining apparatus
An apparatus for determining the time at which a charged droplet is at a predetermined physical position comprising: first and second electrodes (1, 3) past which said droplet passes in use of said apparatus, said droplet inducing a charge on each said el...
08/20/2002
6367917Continuous inkjet printer, printhead, and method of manufacturing electrodes
E1 A CIJ printhead includes a droplet deflector electrode having one or more windows formed therein, and a phase or velocity detector electrode disposed within the window. A method of forming the electrodes by plating multiple conductive and dielectric la...
04/09/2002
6276774Imaging apparatus capable of inhibiting inadvertent ejection of a satellite ink droplet therefrom and method of assembling same
An imaging apparatus capable of inhibiting inadvertent ejection of a satellite ink droplet and method of assembling same. The imaging apparatus comprises a print head transducer including a pair of sidewalls defining a chamber therebetween, the channel ha...
08/21/2001
6224180High speed jet soldering system
Continuous jetting of liquid metal droplets for deposit on a substrate includes an ejector, a deflection device, a print chute, and a collection reservoir. Liquid metal from a cartridge in the ejector provides a continuous molten material stream through a...
05/01/2001
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