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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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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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7618109 |
Method of operating a thermal bend actuator
Provided is a method of operating a thermal bend actuator of a printhead nozzle arrangement of a printhead using an open actuator test circuit. The test circuit includes an open actuator test...
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7614725 |
Inkjet printing apparatus
An inkjet printing apparatus includes an array of inkjet print heads, wherein each print head has at least one ink port for receiving ink, at least one nozzle for directing ink onto a substrate to...
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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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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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7591522 |
Adjusting printing parameters in response to printhead feedback
The present invention relates to a method of printing using dots of ink discharged from nozzles to form the image. To ensure quality and efficiency of printing, a feed back mechanism from the...
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7588317 |
Printing apparatus, printhead, and driving method therefor
An object of this invention is to drive different types of printing elements arranged in a printhead by proper powers without increasing the number of signal lines between the printhead and a...
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7585054 |
Inkjet printhead with integrated circuit mounted on polymer sealing film
A printhead for an inkjet printer, the printhead comprising:
a printhead integrated circuit formed on a wafer substrate using lithographically masked etching and deposition techniques; an...
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7578580 |
Inkjet head with conductive elastic member for electrical continuity between remote contacts in same
An inkjet head for ejecting ink droplets is disclosed which includes: a nozzle unit having metal thin plates and a piezoelectric device, adapted to eject the ink droplets; a printed circuit board...
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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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7571989 |
Droplet ejection head driving circuit and method, and droplet ejection device
A driving circuit of a droplet ejection head which, by supplying analog driving signals to driving elements, ejects droplets from nozzles which are provided in correspondence with the driving...
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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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7568777 |
Altering firing order
Embodiments of altering nozzle firing order are disclosed.
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7559628 |
Head substrate, recording head, head cartridge and recording apparatus therewith
An ink-jet recording head substrate which is mounted with electrothermal transducers producing thermal energy used for discharging ink and which drives the electrothermal transducers, comprising: a...
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7543916 |
Printer with low voltage vapor bubble generating heaters
An inkjet printer that has a printhead with a plurality of nozzles and one or more heater elements 10 corresponding to each nozzle, configured to operate at low voltage and low current. Each...
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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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7517036 |
Printhead module capable of printing a maximum of n channels of print data
A printhead module capable of printing a maximum of n of channels of print data, the printhead being configurable into:
a first mode, in which the printhead is configured to receive print...
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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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7510269 |
Thermal ink jet printhead with heater element having non-uniform resistance
There is disclosed an ink jet printhead which comprises a plurality of nozzles 3 and a bubble forming chamber 7 corresponding to each nozzle respectively. At least one heater element 10 ...
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7500735 |
Liquid droplet ejecting apparatus and liquid droplet ejecting method
An apparatus for ejecting liquid droplets, including: ejecting head main body having a plurality of nozzle rows; a pressure generation chamber; a pressurization section for giving pressure to the...
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7497536 |
Fluid ejection device
A fluid ejection device including firing cells including a first group of firing cells and a second group of firing cells, a control line configured to receive a control signal and control...
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7494207 |
Fluid injection device preventing activation of a bipolar junction transistor (BJT) therein
Fluid injection devices comprise M sets of fluid injection units. Each fluid injection unit comprises N injectors separately connecting to a driver. A controller separately transmits a signal to...
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7484833 |
Droplet ejector and ink-jet printhead using the same
In a droplet ejector and an ink-jet printhead using the same, the droplet ejector includes a fluid path through which a fluid moves, a nozzle being formed on one end of the fluid path, a volumetric...
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7481508 |
Printing apparatus and printing system
A printing apparatus that can prevent unexpected operation of an element is to be achieved. The printing apparatus is provided with: a drive signal generating circuit that can generate a plurality...
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7470000 |
Ink jet head substrate, ink jet head, and method of manufacturing an ink jet head substrate
An ink jet head substrate, an ink jet head and a method of manufacturing an ink jet head substrate are provided. The ink jet head substrate includes a substrate having an ink ejection region. An...
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7469994 |
Ink-jet head and connecting structure
An ink-jet head has a flexible printed circuit and a head main body, and further has a reinforcement that is located between drive-signal terminals arranged adjacent to one another and a...
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7467468 |
Method for manufacturing an ink-jet head
A method for manufacturing an ink-jet head includes the step of forming, in a substrate, through holes respectively corresponding to conductors on one face of the substrate and each having its...
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7465003 |
Liquid ejector and liquid ejecting method
The present invention is directed to a liquid discharge apparatus adapted for discharging inks from discharge holes, which includes a control unit for controlling a discharge control unit, wherein...
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7465031 |
Liquid-ejection apparatus
Flying characteristics of ink droplets are controlled efficiently to the utmost. In one liquid chamber, two heating elements with the same surface-shape and the same heating characteristics are...
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7465032 |
Printhead with inlet filter for ink chamber
An inkjet printhead with an array of ink chambers, each having a nozzle, an actuator for ejecting ink through the nozzle, an inlet opening allowing ink to refill the chamber and a filter structure...
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7461911 |
Droplet ejection apparatus, droplet ejection control apparatus and droplet ejection method
A droplet ejection apparatus includes an ejecting unit, a driving unit and a correcting unit. The ejecting unit has plural droplet ejection portions that include pressure chambers containing a...
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7452059 |
Liquid ejection apparatus
The liquid ejection apparatus comprises: a nozzle through which liquid is ejected; a pressure chamber which accommodates the liquid to be ejected from the nozzle; a supply side flow path which...
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7448708 |
Liquid droplet ejecting head, image recording apparatus, recording method, and image recording method with digital signals expressing voltage and duration of a waveform
A liquid droplet ejecting head has a nozzle, a driving element which ejects a liquid droplet from the nozzle by being driven, a storing unit, a driving waveform generating unit, and a supplying...
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7445316 |
Printhead substrate, printhead, head cartridge, and printing apparatus
A driving circuit layout can suppress an increase in the area of a head substrate in an inkjet printhead adopting a constant electric current driving method. A plurality of printing elements and a...
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7441853 |
Image forming apparatus and drive control method for liquid ejection head
The image forming apparatus comprises: a liquid ejection head which includes a plurality of nozzles and a plurality of pressure generating elements provided correspondingly to the plurality of...
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7441879 |
Unit cell of a printhead for an inkjet printer
The invention provides for a unit cell of a printhead for an inkjet printer. The unit cell includes a wafer substrate, a layer of micro-electromechanical drive circuitry deposited on the wafer...
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7425056 |
Ink-jet apparatus employing ink-jet head having a plurality of ink ejection heaters corresponding to each ink ejection opening
In an ink-jet apparatus employing an ink-jet head having a plurality of heaters corresponding to one ink ejection opening and performing printing by ejecting an ink from the ink-jet head, timings...
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7422313 |
Liquid droplet ejecting apparatus
There is disclosed a liquid droplet ejecting apparatus including: a tank storing a liquid; a nozzle from which the liquid is ejected in the form of a droplet; a first pressure-feed portion which is...
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7419236 |
Printing apparatus and power supply control method
There are provided a printing apparatus having an arrangement capable of stably applying a voltage without using any special power supply control unit, and a power supply control method. According...
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7413288 |
Externally applied write addresses for printhead integrated circuits
An inkjet printer comprising: a printhead with a plurality of printhead IC's, each having an array of nozzles for ejecting drops of printing fluid, and drive circuitry for driving the array of...
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7413292 |
Method of driving piezoelectric ink jet head
The present invention is directed to a method for driving a piezoelectric ink jet head comprising a piezoelectric actuator AC that includes two piezoelectric ceramic layers 7 a , 7 b having such...
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7393072 |
Method of driving an ink-jet printhead
A method of driving an ink-jet printhead, the ink-jet printhead having a pressure chamber to be filled with ink, a piezoelectric actuator for varying a volume of the pressure chamber, and a nozzle,...
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7387352 |
Print optimization system and method for drop on demand ink jet printers
A system and method for optimizing print quality of print media is for use on an ink jet printing system with a drop generator and an orifice plate disposed on the drop generator, wherein the...
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7367655 |
Integrated printhead with encoding circuit
Ink jet printhead comprising a driving and encoding circuit ( 20 ) having a grid-like structure, including a plurality of inputs ( 24 ), a plurality of selecting elements ( 12 ), a plurality of...
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7344227 |
Power and ground buss layout for reduced substrate size
A semiconductor substrate for a micro-fluid ejection device. The substrate includes plurality of micro-fluid ejection actuators disposed adjacent a fluid supply slot in the semiconductor substrate....
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7334856 |
Method of driving liquid-drop-ejecting recording head, and liquid-drop-ejecting recording device
A liquid-drop-ejecting recording head carries out image recording by applying a jetting pulse having a binary digital driving waveform to a piezoelectric element, providing a vibration wave to...
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7328980 |
Thermal print head temperature estimation system
A method estimates the temperature of a thermal print head element during printing. In one embodiment, the temperature is estimated using the resistance of the thermal print head element, which...
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7311385 |
Micro-fluid ejecting device having embedded memory device
A semiconductor substrate for a micro-fluid ejecting device. The semiconductor substrate includes a plurality of fluid ejection devices disposed on the substrate. A plurality of driver transistors...
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7287821 |
Liquid jetting device and drive voltage correction method
A liquid jetting device having: a recording head including a jetting energy generating element; a drive circuit generating drive signal for the element; a liquid detection sensor detecting a...
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