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7631953 |
Micro-fluid ejection apparatus signal communication devices and methods
Micro-fluid ejection apparatuses and devices, and methods related to communication in and with the same. One such micro-fluid ejection apparatus includes a controller configured to generate a data...
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7628463 |
Imaging forming apparatus
An image forming apparatus is disclosed that includes a recording head including a nozzle from which liquid droplets are ejected, a pressure chamber communicating with the nozzle and containing...
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7628462 |
Droplet discharge device and method of driving the same
In order to preserve good droplet discharge efficiency in a droplet discharge device, a plurality of timings are set within a period in which a plurality of droplets are to be discharged to a...
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7625056 |
Device and method for driving jetting head
There is disclosed a head driving device which drives a plurality of pressure generating elements for generating pressure fluctuation in a jetted object contained in each of associated pressure...
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7621609 |
Ink ejection method and inkjet ejection device
An ink ejecting device includes a plurality of nozzles, a plurality of pressure chambers respectively corresponding to the plurality of nozzles, an actuator capable of changing capacity of each of...
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7618128 |
Liquid ejection head, liquid ejection apparatus, and drive control method
The liquid ejection head comprises: a nozzle through which liquid is ejected; a pressure chamber which stores the liquid ejected through the nozzle; a pressurizing device which changes a volume of...
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7618108 |
Inkjet recording apparatus
An inkjet recording apparatus including: a recording head movable in a main scanning direction, and including: an ink passage; a nozzle communicated with the passage; and an actuator applying...
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7614711 |
Liquid droplet ejection method and liquid droplet ejection apparatus
A liquid droplet ejection apparatus comprises: a nozzle from which a liquid droplet is ejected; a pressure chamber filled with liquid to which a pressure is applied in order to eject the liquid in...
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7614719 |
Inkjet printer and inkjet head with modification of driving waveform data
A testing method includes sorting inkjet heads into a plurality of groups on the basis of known information about ink flow, preparing basic driving waveform data corresponding to each of the groups...
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7611214 |
Liquid ejecting apparatus
A liquid ejecting apparatus includes: a head having a nozzle; a pressure-changing unit for changing pressure of liquid in the nozzle in such a manner that the liquid is ejected from the nozzle; a...
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7607753 |
Liquid droplet forming method and liquid droplet forming device
A droplet forming method, for forming a droplet 27 , constituted of a sample liquid 21 , on a substrate 5 by applying a pulse voltage P between the sample liquid 21 , retained in a nozzle 3 ,...
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7604313 |
Ink-droplet ejecting apparatus
There is disclosed an ink-droplet ejecting apparatus including: ink passages each including a pressure chamber filled with ink; actuators each operated to change, upon receiving a drive signal, an...
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7604312 |
Fluid ejection device with feedback circuit
A fluid ejection assembly includes drop ejecting elements arranged in zones, with each zone having at least one drop ejecting element, wherein the drop ejecting elements of each zone are configured...
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7600861 |
Inkjet head
An actuator can selectively take a first state wherein a volume of a pressure chamber is V 1 and a second state wherein the volume of the pressure chamber is V 2 larger than V 1 . The actuator...
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7600836 |
Printhead driving method for printhead with reference voltage source, voltage divider, and differential amplifier
A printhead driving method in a power source device to output a printhead driving voltage, for generating an optimum voltage for a characteristic of the printhead attached to a printing apparatus,...
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7600838 |
Ink-droplet jetting apparatus
For forming one dot by jetting a plurality of ink droplets, a drive pulse signal in an ink-droplet jetting apparatus includes a first main pulse for jetting, a first regulating signal which is...
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7600837 |
Droplet ejection apparatus
A droplet ejection apparatus comprises: (a) a recording head including a nozzle from which a droplet of a liquid is ejected, (b) a pressure chamber which is filled with the liquid and whose volume...
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7600852 |
Printing apparatus
An apparatus for maintaining an inkjet printer printhead in a working state, the printer defining an array of orifices from which in use jets of ink are projected. The apparatus may have a means...
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7600845 |
Piezoelectric head inspection device and droplet jetting device
The present invention provides an inspection device for a piezoelectric head. The piezoelectric head includes: a pressure chamber filled with liquid, a liquid supply channel that supplies the...
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7597424 |
Printhead substrate, printhead, head cartridge, and printing apparatus
An object of this invention is to implement higher-quality printing at a higher speed by changing an electric current value to a printing element and adjusting energy applied to the printing...
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7591520 |
Ink jet printer and method for determining pulse width
An ink jet printer has an ink jet head comprising a nozzle that discharges an ink droplet toward a print medium, and an actuator that makes the nozzle discharge the ink droplet when a pulse signal...
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7585036 |
Printing method, printing apparatus, printing system, and storage medium
A printing method that can suppress drops in voltage due to discharging of piezo elements is achieved. A printing method includes: generating a drive signal for driving a piezo element by...
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7585037 |
Liquid jet apparatus and printing apparatus
A liquid jet apparatus includes a plurality of nozzles provided to a liquid jet head, an actuator provided corresponding to each of the nozzles, and drive unit for applying a drive pulse to the...
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7581822 |
Inkjet printhead with low voltage ink vaporizing heaters
There is disclosed an ink jet printhead 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...
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7575306 |
Discharge head, method of manufacturing discharge head, and liquid discharge apparatus
The discharge head comprises: a liquid chamber which accommodates a liquid to be discharged from a discharge hole onto a discharge receiving medium; a piezoelectric body which applies a discharge...
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7575291 |
Recording apparatus
A recording apparatus including: (a) a recording head unit having actuators and operable to perform a recording operation using at least one recording material that is ejected by activation of the...
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7571975 |
Defect detection device of a print head and method of detecting defect of a print head
A defect detection device of a printer head, and a method of detecting defects, including first to Nth actuators providing a driving force for ejecting ink to ink chambers; a vibration signal...
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7568776 |
Recording apparatus
A serial signal for generating a plurality of recording waveform signals is transmitted serially from a signal transmission circuit to a head river. A serial-parallel converting circuit parallely...
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7559626 |
Inkjet recording head substrate and drive control method, inkjet recording head, inkjet recording head cartridge and inkjet recording apparatus
An inkjet recording head substrate having an electrothermal transducer for generating thermal energy used to discharge ink and a drive element for driving the electrothermal transducer mounted...
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7556327 |
Charge leakage prevention for inkjet printing
Charge leakage prevention and voltage drift prevention on a droplet ejection device for an inkjet printer. In one method to prevent charge leakage on a droplet ejection device with a switch and a...
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7556350 |
Thermal inkjet printhead with low power consumption
An inkjet printhead that has a plurality of nozzles and respective heater elements, together with drive circuitry that can send a pulse of electrical energy to each heater element to form a vapor...
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7554690 |
Array type inkjet printer system including print head, resolution adjusting unit, rendering unit and scaler
An array type inkjet printer system having a print head with a plurality of nozzles formed therein in the horizontal scan direction includes a resolution adjusting unit for reducing a resolution in...
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7549716 |
Method of ejecting microdroplets of ink
The method of ejecting microdroplets of ink includes a first step for generating one ink column on the outside of the nozzle and for separating a tip end of the one ink column from a remaining part...
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7540588 |
Method for printing data and ink jet printer using the same
A method for printing data includes the following steps. First, an ink jet printer, having a print head with a black jet and a color jet, for printing a swath of data is provided. Then, the print...
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7537299 |
Liquid ejection apparatus, drive signal application method, and liquid ejection method
The liquid ejection apparatus includes: (A) a drive signal generation section generating first and second drive signals to be applied to an element that can execute a liquid-ejection operation; (B)...
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7537300 |
Inkjet printer
An inkjet printer whose ink discharge characteristics will rarely change even when used for a long period of time is developed. The inkjet printer has a pressure chamber, a piezoelectric actuator...
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7536129 |
Power transmitting apparatus, power switching apparatus, and driving apparatus of multi-function machine using the same
A driving apparatus of a multi-function machine includes a scanner unit scanning data recorded on a sheet of document and a document transport part to transport the sheet of document. A printer...
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7533950 |
Liquid jet recording apparatus
A liquid jet recording apparatus is provided in which liquid droplets are jetted from liquid jetting orifices.
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7530663 |
Method of removing particulates from a printhead using a rotating roller
A method of removing particulates from an ink ejection face of a printhead is provided. The method comprises the steps of: (a) flooding the face with ink from the printhead, thereby dispersing the...
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7530654 |
Liquid ejection apparatus, liquid ejection method, and printing system
The liquid ejection apparatus includes: a head having a plurality of nozzles each for ejecting a liquid droplet, and a plurality of elements each provided in correspondence with a respective one of...
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7520579 |
Image forming apparatus having droplet speed control
An image forming apparatus includes a recording head, and a drive pulse generator. The recording head includes a nozzle to discharge a droplet of recording liquid, a pressure-generating room to...
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7513584 |
Printing device and printing method
A printing apparatus includes a head having a plurality of ink discharging portions provided in a juxtaposed linear relationship. A discharging direction of an ink droplet to be discharged from...
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7513586 |
Waveform signal driven liquid ejection apparatus and image forming apparatus
The liquid ejection apparatus comprises: a nozzle which ejects liquid; a pressure chamber which is connected to the nozzle and filled with the liquid to be ejected from the nozzle; an actuator...
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7500734 |
Inkjet recording head and inkjet recording device
In a recording head which discharges ink, which is supplied from an ink flow path to pressure chambers, from nozzles by operation of actuators, one actuator is provided for each pressure chamber....
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7500726 |
Liquid ejecting apparatus driving-signals generation
A liquid ejecting apparatus includes: a head having a nozzle; a pressure-changing unit for changing pressure of liquid in the nozzle in such a manner that the liquid is ejected from the nozzle; a...
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7491911 |
MEMS bubble generator for large stable vapor bubbles
A MEMS vapour bubble generator that uses a heater in thermal contact with a liquid to generate a bubble. The heater is energized by an electrical pulse that is shaped to have a relatively low...
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7488049 |
Line head inkjet printer
A line head inkjet printer includes an inkjet head, a controller and a storage unit. The controller generates n kinds of waveforms used to eject different amounts of ink from the nozzles (3≦n...
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7478898 |
Recording head for inkjet recording device
An ink jet recording head unit includes a plurality of nozzle elements, a plurality of piezoelectric elements and a driving unit. The plurality of piezoelectric elements is provided in one-to-one...
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7467864 |
Recording head, head cartridge and recording apparatus
In a connection status output circuit for confirming the connection status with a recording apparatus via connecting terminals corresponding respectively to recording signal DATA, clock signal CLK...
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7467840 |
Method for accurately controlling the volume of ink droplets emitted from a print head
A method for controlling printing actions of a print head ( 1 ) comprising pumps ( 10 ) filled with ink ( 18 ), and actuators ( 16 ) for generating actuation pulses acting on the ink( 18 ),...
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