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US20100002035 Printhead IC With Non-Ejection Maintenance  
A printhead IC is provided having an ejection nozzle having a heater for heating printing fluid, and drive circuitry for generating print pulses and maintenance pulses for driving the heater of...
US20140139575 METHOD OF DRIVING LIQUID EJECTION HEAD AND DRIVE SIGNAL GENERATION DEVICE FOR LIQUID EJECTION HEAD  
A method of driving a liquid ejection head adapted to apply a voltage to the liquid ejection head to eject a liquid including a polymer is provided. The method includes raising the voltage from a...
US20110205274 METHOD OF DRIVING LIQUID EJECTION HEAD AND DRIVE SIGNAL GENERATION DEVICE FOR LIQUID EJECTION HEAD  
A method of driving a liquid ejection head adapted to apply a voltage to the liquid ejection head to eject a liquid including a polymer is provided. The method includes raising the voltage from a...
US20110128317 CAPACITIVE LOAD DRIVING CIRCUIT  
A capacitive load driving circuit includes: a voltage waveform output unit that outputs a voltage waveform used for driving a plurality of capacitive loads; and a voltage waveform applying unit...
US20140240383 METHOD OF DRIVING A CAPACITIVE LOAD AND DRIVE CIRCUIT THEREFOR  
A method for driving a capacitive load using a target voltage waveform having a peak voltage and an average rise and fall slew rate, wherein the average rise and fall slew rates comprise at least...
US20090322813 INKJET PRINTHEAD WITH VARIABLE DRIVE PULSE  
An inkjet printhead with an array of nozzles 26 and corresponding heaters 10 configured for heating printing fluid 20 to nucleate a vapor bubble 12 that ejects a drop 24 of the printing fluid...
US20080198190 Printing System for Triggering the Print Head of a Printer Cartridge  
The invention relates to a printing system for controlling the printing head of a conventional printing cartridge designed for water-based printing ink. Said printing head comprises ink...
US20140327713 PRINTHEAD WAVEFORM VOLTAGE AMPLIFIER  
A waveform amplifier for a piezoelectric liquid ejection element. The amplifier provides an amplified waveform to the liquid ejection element.
US20110043558 DROPLET EJECTION DEVICE  
There is provided a droplet ejection device including: a droplet ejection unit that successively ejects plural droplets within a pre-specified driving cycle and is capable of causing the plural...
US20100110125 IMPROVEMENTS IN OR RELATING TO MARKING AND/OR CODING  
The invention provides a marking and/or coding apparatus which allows print resolution to be adjusted by multiplying or dividing encoder inputs generated from a conveyor on which goods to be coded...
US20110242170 METHOD FOR OPERATING CONTINUOUS PRINTERS  
A method for operating a continuous inkjet printer, the method includes forming drops with a drop formation period being the time between consecutive drop formations; creating a portion of the...
US20150210071 ADAPTIVE LEVEL SHIFTER FOR PRINT NOZZLE AMPLIFIER  
An apparatus includes an amplifier to provide a waveform to drive a print nozzle. The amplifier also provides a current proportional to a slew rate of the waveform. A pass gate to applies the...
US20120327150 METHOD AND DRIVE CIRCUIT FOR DRIVING PIEZOELECTRIC ELEMENT, AND LIQUID-DROPLET EJECTION HEAD  
A method for driving a piezoelectric element of a head, including: a step of increasing a voltage of a power source to a reference voltage level; and a step of charging one electrode of two...
US20120327148 LIQUID EJECTION APPARATUS  
The liquid ejection apparatus includes a liquid ejection head, a drive unit, a non-ejection drive controller, and an environment measurement unit. The drive unit selectively supplies an ejection...
US20130235101 DROP FORMATION WITH REDUCED STIMULATION CROSSTALK  
A liquid stream is caused to jet from a nozzle. A small or large drop waveform applied to a drop forming mechanism causes the liquid stream to break up into a small or large volume drop,...
US20090225112 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...
US20080180473 PRINTER WITH CONFIGURABLE MEMORY  
A printer is described that has a configurable memory to which waveform definitions are uploaded just prior to a printing process. The printer manufacturer can program a printer controller with...
US20130235102 DROP FORMATION WITH REDUCED STIMULATION CROSSTALK  
A liquid stream is caused to jet from a nozzle. A small or large drop waveform applied to a drop forming mechanism causes the liquid stream to break up into a small or large volume drop,...
US20130222453 DROP GENERATOR AND POLING WAVEFORM APPLIED THERETO  
A drop emitting apparatus may include a drop generator having a piezoelectric element and configured to receive a drop firing waveform having a drop firing voltage pulse during a drop ejection...
US20110175956 INKJET EJECTION APPARATUS, INKJET EJECTION METHOD, AND INKJET RECORDING APPARATUS  
A standard drive waveform contains, in one ejection cycle: a first ejection waveform group including at least one ejection waveform causing liquid to be ejected from a nozzle to form one dot of a...
US20050014247 Method and machine for ex situ production of low and medium intergration biochip networks  
A method of ex situ fabrication of at least one biochip, the method being of the type consisting in projecting onto a substrate a microvolume of reagent comprising at least one probe diluted in a...
US20150042708 BIAS CURRENT REDUCTION FOR PRINT NOZZLE AMPLIFIER  
An apparatus includes an amplifier that employs a bias current to drive a print nozzle. A current reduction module can be employed to offset the bias current and to reduce a portion of the bias...
US20080316509 Print apparatus, server, method for improving print characteristics, and computer program therefor  
A print apparatus connected to a server via a network includes an improvement-information requesting unit configured to notify the server via the network of identification information unique to a...
US20120019578 CROSSTALK REDUCTION IN PIEZO PRINTHEAD  
Crosstalk in a piezo printhead is reduced by storing a coefficient that expresses an amount of crosstalk between a first nozzle and an adjacent nozzle. A drive waveform voltage is pre-biased using...
US20110169885 PRECURSOR PULSE GENERATION FOR INKJET PRINTHEAD  
The present invention is embodied in a printing system (100) that includes a printhead (102) having a controller (510) configured to initiate at least one precursor pulse, send the at least one...
US20140125721 Switching driving method used for a driving system  
The present invention discloses a switching driving method used for a driving system. The driving system transforms any type of waveforms to switching signal array by switching strategy...
US20110242169 CONTINUOUS PRINTER WITH ACTUATOR ACTIVATION WAVEFORM  
A method for operating a drop generating device for selective formation of large-volume droplets and small-volume droplets, said method includes the steps of defining a small-drop waveform at...
US20090278876 SHORT PULSEWIDTH ACTUATION OF THERMAL BEND ACTUATOR  
A method of actuating a thermal bend actuator having an active beam fused to a passive beam. The method comprises passing an electrical current through the active beam so as to cause thermoelastic...
US20110285772 LIQUID EJECTION DEVICE AND LIQUID TESTING METHOD  
A liquid ejection device includes a plurality of nozzles, a plurality of piezoelectric elements, a drive signal generating portion and a common ejection testing portion. The nozzles are arranged...
US20110164082 Pulse Width Control Device and Method, Inkjet Printing Device Using the Device  
Disclosed is a pulse width control device, including: a first monostable multivibrator, for receiving a synchronization pulse, and generating a negative pulse whose width is a first preset...
US20140009523 PRINTING WITH MERGED DROPS USING ELECTROSTATIC DEFLECTION  
An apparatus and method of ejecting liquid drops includes modulating a liquid jet to cause it to break off into drop clusters, including first and second drops traveling along a path, separated on...
US20090309908 Method for Producing Ultra-Small Drops  
Apparatus and methods for producing a drop from a Drop on demand (DOD) dispenser, the drop having a radius that is much smaller than the radius of the nozzle that expels the drop. Generally, the...
US20150197085 METHODS, SYSTEMS, AND APPARATUSES FOR IMPROVING DROP VELOCITY UNIFORMITY, DROP MASS UNIFORMITY, AND DROP FORMATION  
Methods and systems are described herein for driving droplet ejection devices with multi-level waveforms. In one embodiment, a method for driving droplet ejection devices includes applying a...
US20080129770 DROPLET EJECTION HEAD DRIVE METHOD, DROPLET EJECTION DEVICE, AND ELECTROOPTIC APPARATUS  
A droplet ejection head drive method includes (1) associating multiple nozzles with ranks corresponding to weights of droplets ejected from the nozzles, (2) generating drive waveforms for driving...
US20150091961 LIQUID EJECTING DEVICE, HEAD UNIT, AND LIQUID EJECTING METHOD  
A liquid ejecting device includes: a piezoelectric element that is deformed by applying at least one drive waveform among a plurality of drive waveforms to the piezoelectric element, the plurality...
US20080204492 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...
US20100328378 LIQUID DROPLET JETTING APPARATUS  
A liquid droplet jetting apparatus which jets liquid droplets includes: a liquid droplet jetting head which has a nozzle for jetting the liquid droplets; and a jetting controller which controls...
US20100201725 DRIVING WAVEFORM FOR DROP MASS AND POSITION  
A drop emitting device that includes a drop generator, a drive signal including a plurality of fire intervals applied to the drop generator, wherein the drive signal includes in each fire interval...
US20090244133 Signal processing apparatus, droplet ejection apparatus and signal processing method  
A signal processing apparatus has a first circuit board having a digital/analog converter, a second circuit board having an operational amplifier, a connector connecting the first circuit board...
US20150035885 LIQUID EJECTING APPARATUS  
A drive signal includes a first drive pulse that causes liquid droplets to be ejected from nozzles and a second drive pulse that causes liquid droplets of a different size to those of the first...
US20090027431 INKJET APPARATUS AND DRIVING METHOD, AND MANUFACTURING METHOD OF DISPLAY APPARATUS USING THE SAME  
In one embodiment, a driving method of an inkjet apparatus, includes applying the same driving pulse to a plurality of piezoelectric elements; measuring a discharge speed and a discharge volume of...
US20120120138 CROSSTALK REDUCTION IN PIEZO PRINTHEAD  
Crosstalk in a piezo printhead is reduced by selecting an actuation signal for a nozzle, determining a time delay and a pulse width extension based on adjacent actuation signals of adjacent...
US20130155135 FLUID EJECTION ASSEMBLY WITH CIRCULATION PUMO  
A fluid ejection assembly includes a fluid slot, a recirculation channel, and a drop ejection element within the recirculation channel. A pump element is configured to pump fluid to and from the...
US20110285773 LIQUID EJECTION DEVICE AND LIQUID TESTING METHOD  
A liquid ejection device includes a plurality of nozzles, a plurality of piezoelectric elements, a drive signal generating portion, a selection portion and an ejection testing portion. The nozzles...
US20150062218 PRINTING WITH MULTIPLE PRINTHEAD DIES  
A method and apparatus for printing is disclosed. The printing is done with multiple printhead dies. The nozzles in the different printhead dies are fired using different phases in an up-sampled...
US20140375716 LIQUID EJECTING APPARATUS AND MANUFACTURING METHOD THEREOF  
A liquid ejecting apparatus includes a correction section maintains a predetermined voltage range in which a displacement is greater than a predetermined ratio as a drive voltage range from a...
US20130187965 LIQUID EJECTING APPARATUS AND MANUFACTURING METHOD THEREOF  
A liquid ejecting apparatus includes a correction section maintains a predetermined voltage range in which a displacement is greater than a predetermined ratio as a drive voltage range from a...
US20140009522 ELECTRODE PRINT SPEED SYNCHRONIZATION IN ELECTROSTATIC PRINTER  
A system and method of printing includes providing print and non-print drop formation waveforms to a drop formation device of a drop ejector in response to input print data to form print and...
US20120086748 PRINTHEAD HAVING MIRRORED ROWS OF PRINT NOZZLES  
A printhead having at least first and second rows of print nozzle cells. Each each nozzle cell has an ink chamber, control circuitry and drive circuitry. Each nozzle cell in the first row has a...
US20050062804 Variable drive for printhead  
A driver for driving simultaneously a variable number of firing resistors for a printhead includes a drive circuit for supplying a drive signal for firing the variable number of firing resistors,...