Did You Know...
...that two musicians were responsible for the invention of color print film? Fascinated by photography, Leopold Godowsky and Leopold Mannes worked together to produce an easy-to-use, practical color film. They worked full time as music teachers and gave concerts while experimenting during their off hours in Mannes' kitchen. Their success earned them full-time, well-paying jobs at Kodak and their efforts resulted in Kodachrome film, which was introduced in 1935.
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| Number | Title | Issue Date |
| 8186791 | Liquid ejecting apparatus and control method thereof A liquid ejecting apparatus includes a liquid ejecting head with a group of nozzles. The liquid ejecting apparatus drives a pressure generating element to generate pressure variation in a liquid in a pressure generating chamber and ejects the liquid from the nozzles... | 05/29/2012 |
| 8186790 | 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 Ohnesorge number is less than about 0.1. Various embodiments of the inv... | 05/29/2012 |
| 8167396 | Liquid discharging apparatus and control method of liquid discharging apparatus A contraction portion of a vibration pulse includes a first contraction element which occurs subsequent to an expansion portion, a contraction maintaining element which follows the first contraction element, and a second contraction element which follows the contrac... | 05/01/2012 |
| 8118384 | Inkjet printer A inkjet printer including a plurality of heads installed in a staggered arrangement, and a relay board for receiving image data, a control signal conforming to each head, and a timing signal for determining timed intervals to emit ink particles from the control uni... | 02/21/2012 |
| 8100493 | Liquid jet and printing apparatus for preventing the change of voltage in the drive signal A liquid jet apparatus according to the present invention includes a plurality of nozzles, an actuator provided for each nozzle and connected to the respective nozzle, and a drive unit for applying a drive signal to the actuator. The drive unit includes a drive wave... | 01/24/2012 |
| 8057001 | Imaging apparatus An imaging apparatus is provided that includes a liquid discharge head configured to discharge recording liquid as one or more recording liquid droplets; a drive waveform generating unit configured to generate a drive waveform including at least two drive signals wi... | 11/15/2011 |
| 8042899 | System and method for compensating for weak, intermittent, or missing inkjets in a printhead assembly A system enables surrounding inkjets to be used to compensate for missing, intermittent, or weak inkjets without requiring additional passes of the image substrate or slowing the printing process. The system includes a printhead firing signal generator configured to... | 10/25/2011 |
| 8033627 | Printing apparatus and printing method In printing of multi-level darkness/lightness of a certain color, which is performed with a dark ink and a light ink of the certain color, graininess is improved. A printing method includes generating a plurality of types of drive signals, and ejecting the dark ink ... | 10/11/2011 |
| 8011748 | 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 through the nozzle. Drive circuitry ... | 09/06/2011 |
| 8002374 | Printhead driving method, printhead substrate, printhead, head cartridge, and printing apparatus An increase in energy applied to a heating element can be prevented and the service life of a printhead can be prolonged even when the temperature of the printing element having a negative temperature coefficient rises and the resistance of the heating element decre... | 08/23/2011 |
| 7988249 | 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 first level-data setting unit for setting a selected first level data ... | 08/02/2011 |
| 7984956 | Liquid jet apparatus and printing apparatus A liquid jet apparatus according to the present invention is a liquid jet apparatus including a plurality of nozzles, an actuator provided for each nozzle and connected to the respective nozzle, a drive waveform signal generation unit that generates a drive pulse, a... | 07/26/2011 |
| 7976115 | Printhead nucleation detection using thermal response A method for determining the pulse width for driving printhead nozzles in a thermal inkjet printer. The printhead is preheated to a desired temperature during a maintenance mode. The printhead nozzle heaters are successively driven in respective heating intervals, w... | 07/12/2011 |
| 7971948 | Liquid jet apparatus and printing apparatus A liquid jet apparatus of the invention includes a drive waveform generator that generates a drive waveform signal, a modulator that pulse-modulates the drive waveform signal so as to produce a modulated signal, a digital power amplification circuit that amplifies t... | 07/05/2011 |
| 7950760 | Liquid droplet ejecting apparatus and liquid droplet ejecting method A liquid droplet ejecting apparatus having: a liquid droplet ejecting head; and a drive pulse generating unit, wherein the head includes: a nozzle; a pressure chamber which communicates with the nozzle; and a pressure applying section which changes a pressure in the... | 05/31/2011 |
| 7950759 | Operating method for inkjet head A method of operating an inkjet head to eject ink droplets, for an inkjet head including a pressure chamber that is contracted and expanded in a particular period, including: decompression-operating the membrane, such that the volume of the pressure chamber is incre... | 05/31/2011 |
| 7942489 | Liquid emitting apparatus and method Disclosed is a liquid emitting apparatus for emitting a liquid pressurized by a pressure generated by a pressure generating element is emitted as liquid droplets onto a support. A controller (68) controls an emission controller (63) so that the current... | 05/17/2011 |
| 7926893 | Recording apparatus A recording apparatus scans a recording head in a main scanning direction to perform time-division driving for a plurality of blocks of recording elements to perform recording. The recording apparatus includes an obtaining unit configured to obtain information regar... | 04/19/2011 |
| 7918520 | Liquid drop expelling head and image forming device provided therewith There is provided a liquid drop expelling head including: a driving element generating a pressure wave at a liquid within a pressure chamber, and expelling a liquid drop from a nozzle which communicates with the pressure chamber; and a control section applying a dri... | 04/05/2011 |
| 7918521 | Droplet ejecting apparatus In a droplet ejecting apparatus, a detection pattern output unit drives a droplet ejecting head based on a pulse signal and image information of a detection pattern comprising plural unit patterns so as to form an image of the detection pattern on a recording medium... | 04/05/2011 |
| 7914095 | Head element substrate, recording head, and recording apparatus A head element substrate includes receiving means for receiving data in which recording data and drive pulse width data have been multiplexed, a shift register which separates recording data from the multiplexed data, and a drive pulse width signal generation circui... | 03/29/2011 |
| 7901020 | Printing apparatus and printing method In printing of multi-level darkness/lightness of a certain color, which is performed with a dark ink and a light ink of the certain color, graininess is improved. A printing method includes generating a plurality of types of drive signals, and ejecting the dark ink ... | 03/08/2011 |
| 7901021 | Methods and apparatuses for control of a signal in a printing apparatus A printing apparatus is provided that precisely control the transition of an electrical signal that causes a printing substance to be deposited. In particular, in some embodiments, a circuit is configured to control the application of a firing pulse to a printing el... | 03/08/2011 |
| 7896456 | Method for driving liquid ejector A method for driving a liquid drop ejector (1) equipped with a piezoelectric actuator (7) including a piezoelectric ceramic layer (6) having a size covering a plurality of pressurizing chambers (2). An arbitrary piezoelectric deformation ... | 03/01/2011 |
| 7871141 | Liquid ejecting apparatus and method of controlling liquid ejecting apparatus A liquid ejecting apparatus includes a liquid ejecting head and a driving signal generating device. The liquid ejecting head includes a pressure generating device and a pressure chamber in communication with a nozzle opening. The pressure generating device generates... | 01/18/2011 |
| 7866776 | Ink jet head driving method, ink jet head and ink jet recording apparatus In an ink jet head driving method, a first drive pulse signal is transmitted to a first actuator that is formed in a first ink chamber confronting a print area on a recording medium and from which ink is to be discharged. The first drive pulse signal comprises a res... | 01/11/2011 |
| 7862135 | Method of driving liquid ejecting head and liquid ejecting apparatus A method of driving a liquid ejecting head is provided. The liquid ejecting head varies pressure of a liquid in a pressure-generating chamber as a result of operating a pressure-generating element by supplying an ejection pulse, to eject liquid drops from a nozzle o... | 01/04/2011 |
| 7850266 | Element substrate for recording head, recording head, head cartridge, and recording apparatus An element substrate for a recording head includes groups of heating resistors that are disposed next to one another in each group; logic circuits configured to time-divisionally drive the heating resistors in units of one block; a heat enable signal line common to ... | 12/14/2010 |
| 7828402 | Driving device for recording head, image recording apparatus, and driving method for recording head The driving device of a recording head having a recording element, the driving device includes: a power supply device which supplies voltage to be applied to the recording element; an output circuit block which converts the voltage supplied from the power supply dev... | 11/09/2010 |
| 7802863 | Ink-jet recording apparatus An ink-jet recording apparatus of the present invention includes one or more ink-jet heads, a drive waveform generation circuit, a plurality of drive waveform selection circuits, and a plurality of drive signal generation circuits. The drive waveform generation circ... | 09/28/2010 |
| 7775615 | Inkjet printer A inkjet printer including a plurality of heads installed in a staggered arrangement, and a relay board for receiving image data, a control signal conforming to each head, and a timing signal for determining timed intervals to emit ink particles from the control uni... | 08/17/2010 |
| 7770990 | Inkjet recording apparatus An inkjet recording apparatus includes a circulation flow channel connected to nozzle flow channels and via which ink from pressure chambers is circulated; actuators which changes pressure in the pressure chambers to eject the ink from the nozzles; and a circulating... | 08/10/2010 |
| 7766439 | Recording apparatus A recording apparatus including: a recording head having a plurality of actuators for performing dot printing; a drive circuit which outputs respective drive pulses to the respective actuators; and a main circuit which transmits, to the drive circuit, a drive signal... | 08/03/2010 |
| 7758140 | Liquid jet apparatus and printing apparatus A printing apparatus uses a liquid jet apparatus including a plurality of nozzles provided to a liquid jet head, an actuator provided corresponding to each of the nozzles, and drive unit that applies a drive signal to the actuator, wherein the drive unit includes dr... | 07/20/2010 |
| 7753464 | Liquid-jet apparatus A liquid-jet apparatus includes: a driving signal generating unit that generates a ejecting driving signal, which is a periodic signal having a plurality of pulse waveforms; a driving pulse generating unit that generates a driving pulse string for each unit region o... | 07/13/2010 |
| 7744182 | Capacitive load driving circuit and method, and liquid drop ejecting device A capacitive load driving circuit that supplies driving voltage to a capacitive load includes a driving voltage waveform generating unit. The driving voltage waveform generating unit, at times of charging or discharging of the capacitive load, generates a driving vo... | 06/29/2010 |
| 7726758 | Composite printhead fire signals A method and device for providing a plurality of fire pulses in an ink jet printer, which includes a production of a plurality of fire signals. Each fire signal of the plurality of fire signals are asserted at a different timing than the other of the plurality of fi... | 06/01/2010 |
| 7708363 | Printing apparatus and printing method A printing apparatus includes a head and a drive signal generating section. The head has an element performing operation for ejecting ink and ejects a plurality of types of inks, an amount of each ink ejected by the head being different depending on a designated ton... | 05/04/2010 |
| 7708364 | Ink-jet recording apparatus and data transfer apparatus An ink-jet recording apparatus, including plural ink-jet head units which are daisy-chain-connected to a control section and eject ink; and the control section which sends serial driving data to the plural ink-jet head units, wherein each ink-jet head unit includes ... | 05/04/2010 |
| 7699421 | Liquid ejecting apparatus A liquid ejecting apparatus of the invention includes a distance obtaining unit that obtains a distance between the nozzle of the head and a medium to which the liquid is ejected. The driving signal is a periodical signal including a first pulse-wave capable of ejec... | 04/20/2010 |
