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7524042 |
Ink 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...
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7497542 |
Sensor for detecting edge of printing medium, and printer incorporating the same
A recording head has a plurality of nozzles adapted to eject ink droplets toward a printing medium which is transported in a first direction. A head supporting member supports the recording head. A...
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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...
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7328983 |
Ink-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...
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7267418 |
Ink 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...
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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...
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7223309 |
Display 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...
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7121642 |
Drop 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...
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6988783 |
Liquid 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...
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6969159 |
Ink 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...
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6897466 |
Instrument 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...
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6858860 |
Apparatus 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...
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6767088 |
Methods 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...
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6764168 |
Sensor 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...
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6761429 |
Bulldozing 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...
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6726318 |
Microscopic 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...
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6692099 |
Testing 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...
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6641246 |
Detection 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...
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6608698 |
Printing 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...
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6578946 |
Movable 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...
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6550887 |
Ink 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...
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6545773 |
Compensation 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...
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6533377 |
Cleaning 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...
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6447108 |
Continuous 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...
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6435645 |
Charged 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...
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6367917 |
Continuous 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...
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6276774 |
Imaging 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...
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6224180 |
High 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...
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6161914 |
Alignment sensor system for multiple print cartridges
Apparatus and techniques are disclosed for aligning the operation of the ink jet printhead cartridges of a multiple printhead ink jet swath printer that includes a print carriage that is movable...
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6142597 |
Printer device
A printer device for emitting a medium or mixing and emitting a medium for quantitation and a medium for emission, in which a correct recording image can be formed with a suppressed running cost....
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6113228 |
Ink container for compact supply station
The present disclosure relates to an ink container for providing ink to an ink jet printing system. The ink container includes an outer shell, the outer shell defining an elongate opening therein....
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6086190 |
Low cost ink drop detector
An ink drop detector that minimizes costs of a printer by employing preexisting digital signal processing elements in a printer and low cost analog sensing elements. The analog sensing elements are...
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5867194 |
Method and apparatus for automatic setting of nozzle drive voltage in an ink jet printer
A method and apparatus for accurately determining and setting the optimal nozzle drive voltage for an ink jet printer. The current carried by charged test drops is monitored by a sensing electrode...
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5644344 |
Optical print cartridge alignment system
Apparatus and techniques are disclosed for aligning the operation of the ink jet printhead cartridges of a multiple printhead ink jet swath printer that includes a print carriage that is movable...
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5523778 |
Segmented charge tunnel for drop charging in a printhead
A segmented charge tunnel for ink jet printing having a plurality of individual segments is utilized to sequentially apply charges to a droplet stream. Precise location of the stream break-off...
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5505339 |
Pressure-sensitive accumulator for ink-jet pens
The accumulator regulates changes in the back pressure of an ink-jet pen reservoir so that ink does not leak from the pen print head and so that the print head is able to completely empty the...
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5430306 |
Optoelectronic detector with high, uniform sensitivity and large field of view, for thermal-inkjet inkdrops
The device ascertains existence of a small inkdrop to be ejected from a thermal-inkjet pen. It includes a light source (preferably a nonpoint source with extended threadlike form perpendicular to...
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5402164 |
Ink jet recording apparatus of the continuous jet type
An ink jet recording apparatus of the continuous jet type wherein the position of an ink jet jetting axis or nozzle axis can be detected readily with a simplified construction. The ink jet...
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4994821 |
Continuous ink jet printer apparatus having improved short detection construction
A short detection system for a continuous ink jet printer includes an electrically conductive sensor element located along an ink egress passage of the printer's catcher; a dielectric surface...
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4990932 |
Ink droplet sensors for ink jet printers
Improved differential optical sensors are mounted at every intersection of the deflection planes of the ink droplets issued by a multi-nozzle printhead of a pagewidth ink jet printer. These sensors...
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4754289 |
Two-dimensional ink drop shadow position detecting apparatus
A two-dimensional position detecting apparatus for ink drops is disclosed including a light source and a pair of photodetectors disposed in a detecting region so that the pair of photodetectors...
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4751517 |
Two-dimensional ink droplet sensors for ink jet printers
Mounted at every other intersection of the deflection planes of the ink droplets issued by a multi-nozzle printhead of a pagewidth continuous stream ink printer are two-dimensional differential...
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4611216 |
Charged ink particles detection housing
A charge detecting electrode unit is disclosed which is coupled to a platen shaft of an ink jet printer so as to be rotatable relative thereto for detecting a deflected position of charged ink...
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4590483 |
Ink jet printer with charging control of ink-drop flow velocity
A charge detector forming part of a device for controlling the electrostatic charge applied to ink drops in an ink-jet printer comprises at least one internal conductive cylindrical rod connected...
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4550322 |
Drop sensor for an ink jet printer
A drop sensor for an ink jet printer for determining the two-dimensional position of an ink drop as it flies through the sensor. A plurality of light emitting elements emit light beams which cross...
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4550321 |
Charged ink-printer droplet detection
A charged drop detection device for an ink jet printer is disclosed which detects a charged ink drop ejected from an ink jet head. Using a unique control signal conductor, the device is controlled...
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4510504 |
Method and device for detecting deflection amount of ink jet in ink jet printer
A method for detecting a deflection amount of ink jets according to the present invention applied to an ink jet printer is effected by projecting light upon a flying ink drop, and detecting...
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4434428 |
Deflection detector for ink jet printing apparatus
A deflection detector for an ink jet printer comprises first and second plates made of an insulating material and bonded to each other. The first insulator plate is provided with at least two...
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4430658 |
Apparatus for detecting deflection of a charged ink droplet.
An apparatus for detecting deflection of a charged ink droplet for use in an ink-jet printer is provided. The present apparatus comprises a support member and an electrode housing containing...
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4410895 |
Ink jet sensor method and apparatus
In an ink jet printer, improved ink droplet sensing method and apparatus. The disclosed full width ink jet printer includes a number of ink jet nozzles which direct ink droplets to specific regions...
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