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| Number | Title | Issue Date |
| 8167402 | Ink jet printing apparatus and ink jet printing method In a structure in which a printing medium is subjected to a maintenance ejection in order to maintain a favorable ink ejection performance of a printing head, dots formed on the printing medium by the maintenance ejection have a reduced visibility. Specifically, an ... | 05/01/2012 |
| 8152272 | Printer having flushing area setting unit A printer comprises: an inkjet head including nozzles for discharging ink; a holding member which holds a print medium; a moving mechanism which moves the holding member and/or the inkjet head so as to move the inkjet head relative to the holding member in a main sc... | 04/10/2012 |
| 8152271 | Liquid ejecting apparatus A liquid ejecting apparatus includes a liquid ejecting head disposed on a transport path of a target to eject a liquid from nozzles at a nozzle forming surface, a target transport unit transporting the target such that the target passes through a position opposite t... | 04/10/2012 |
| 8128196 | Thermal cleaning of individual jetting module nozzles A liquid ejection device includes a jetting module including an array of nozzles; a thermal stimulation device associated with each nozzle of the array of nozzles; and a controller in electrical communication with each thermal stimulation device. The controller is c... | 03/06/2012 |
| 8118399 | Ink receiving unit and inkjet printer including the same An ink receiving unit for an inkjet printer includes an ink receiver and an ink removing device. The inkjet printer has an inkjet head configured to eject ink onto a first surface of a medium. The ink receiver is provided to face the inkjet head via the medium. The ... | 02/21/2012 |
| 8091979 | Apparatus for free-spraying an inkjet printhead An apparatus for free-spraying an inkjet printhead includes a feed table with a slot carrier which can be deflected counter to a spring force and has at least one free-spraying slot disposed opposite at least one inkjet printhead. The slot carrier is shaped in such ... | 01/10/2012 |
| 8091980 | External particle mitigation without exceeding drooling limitations A method of performing maintenance on a printhead of an imaging device includes the application of a purge pressure to ink in an on-board reservoir of the printhead to cause ink to be burped through a plurality of apertures in an aperture plate of the printhead. A w... | 01/10/2012 |
| 8087746 | Movable fluid receiver A printer and method include a first receiver configured to receive fluid ejected by one or more print heads on a first side of a media and a second receiver configured to receive fluid ejected by the one or more print heads on a second side of the media, wherein th... | 01/03/2012 |
| 8083315 | Printhead assembly configured to purge printheads of a printer The invention provides for a printhead assembly configured to purge printheads of a printer. The assembly includes duplex printheads arranged opposite each other to define a print media feed gap between them, and two purging members each defining a purging chamber a... | 12/27/2011 |
| 8066351 | Printer assembly with printhead purging members The invention provides for a printer assembly for a pagewidth printer. The assembly includes a casing that defines a print media feed path, and duplex printheads arranged on opposite sides of the a print media feed path. Also included are two purging members each in... | 11/29/2011 |
| 7984963 | Printhead purging system with hammer action A printhead purging system comprises an ink conduit for supplying ink to a printhead, a hammer head for hammering a wall of a compressible part of the conduit, a spring-loading mechanism for priming the hammer head, and a release mechanism for releasing the primed h... | 07/26/2011 |
| 7926905 | Ink jet recording apparatus Even in the case where preliminary ejection is performed by a recording head having an array of pigment ink ejection outlets and an array of dye ink ejection outlets in which a length of the pigment ink ejection outlet array is longer than a length of the dye ink ej... | 04/19/2011 |
| 7926904 | Inkjet recording apparatus and cleaning method An inkjet recording apparatus that includes an intermediate transfer body that has an image forming surface including an image forming region on which an image is formed by means of the ink droplets ejected from an ink ejection head and a cleaning device which makes... | 04/19/2011 |
| 7901034 | Image forming device for performing idle discharge In an image forming device including a liquid discharge head in which nozzles for discharging liquid drops are arranged side by side, a drive waveform generating unit generates, within a single drive cycle, a first drive waveform containing a drive signal to dischar... | 03/08/2011 |
| 7896463 | Ink jet printing apparatus and preliminary ejecting method The present invention provides an ink jet printing apparatus that can inexpensively print desired colors without causing ink color mixture. In a print head, a plurality of nozzle rows for respective ink colors are arranged in parallel with one another. Arrangements ... | 03/01/2011 |
| 7857420 | Methods and apparatus to identify pages to be discarded in a print system Methods and apparatus for adding pages to a sequence of imprinted images used for flushing of inkjet features and then discarding the added pages following imprinting of the added pages. Features and aspects hereof within a printing system automatically insert addit... | 12/28/2010 |
| 7845761 | Ink jet printing apparatus and control method for reducing preliminary ejection In an ink jet printing apparatus, preliminary ejection for a print head involving a plurality of distances from a common ink supply port to respective ejection openings is optimized. Specifically, for a first nozzle array and a second nozzle array with different dis... | 12/07/2010 |
| 7837297 | Printhead with non-priming cavities for pulse damping A printhead for an inkjet printer that has a printhead integrated circuit (68) with nozzles for ejecting ink and a support structure (64, 174, 176) for supporting the printhead IC. The support structure having ink conduits (182) for supplying th... | 11/23/2010 |
| 7806508 | Ink-jet recording method and ink-jet recording apparatus An ink-jet recording method for forming an image by discharging a liquid functional material onto a recording medium by a full-line type ink-jet head having discharge nozzles arranged in a widthwise direction substantially perpendicular to a transporting direction o... | 10/05/2010 |
| 7798600 | Method of purging a printhead using coordinated pressure device and in-line valve A method of purging ink from an inkjet printhead is provided. The printhead is in fluid communication with an ink reservoir via an ink conduit having a valve. The method comprises the steps of: (i) closing the valve; (ii) positively pressurizing the ink reservoir us... | 09/21/2010 |
| 7758153 | Printing apparatus and printhead temperature retaining control method The object of this invention is to provide a printing apparatus and printhead temperature retaining control method capable of suppressing power consumption, and reducing degradation in image quality. To achieve the object, a printing apparatus for printing an image ... | 07/20/2010 |
| 7726772 | Liquid ejection apparatus A liquid ejection apparatus including a liquid ejection head, a liquid receiver, a liquid receiver movement mechanism, and a lid body is provided. The liquid ejection head has a nozzle surface. The nozzle surface includes a nozzle opening. The liquid ejection head e... | 06/01/2010 |
| 7722156 | Ink supply system with separate purging reservoir An ink supply system for purging an inkjet printhead is provided. The ink supply system comprises: (a) a first ink reservoir for supplying printing ink to the printhead; (b) a second ink reservoir for supplying purging ink to the printhead; and (c) a valve having a ... | 05/25/2010 |
| 7703882 | Method of purging using purging ink and printing using printing ink from an inkjet printhead A method of purging and printing from an inkjet printhead is provided. The method comprises the steps of: (i) fluidically connecting the printhead to a second ink reservoir containing purging ink; (ii) purging the printhead using the purging ink, thereby flooding an... | 04/27/2010 |
| 7618116 | Printing apparatus and method for alternately performing preliminary discharge control of nozzles A printing apparatus uses a printhead, which has a first nozzle array and a second nozzle array, each having a plurality of nozzles with a first nozzle discharging a first amount of ink and a second nozzle away having a plurality of nozzles with a second nozzle disc... | 11/17/2009 |
| 7614723 | Printing system, controller for printing apparatus, method of executing printing process, and program for flushing ejection For a low saturation and high density region in a printed sheet identified based on rasterized data, flushing ejection is executed, with landing positions dispersed in the region. For a region being low in saturation but not high in density, an edge portion of the r... | 11/10/2009 |
| 7588313 | Printer having flushing control unit to execute flushing printing on the print medium A printer comprises: an inkjet head including nozzles for discharging ink; a holding member which holds a print medium; a moving mechanism which moves the holding member and/or the inkjet head so as to move the inkjet head relative to the holding member in a main sc... | 09/15/2009 |
| 7578574 | Ink-jet recording apparatus An ink-jet image forming apparatus includes an ink-jet head having at least a first nozzle portion and a second nozzle portion, where each nozzle portion may independently perform preliminary ink ejection is provided. ... | 08/25/2009 |
| 7562961 | Droplet discharging apparatus, image forming apparatus and preliminary discharge method The droplet discharging apparatus includes: a discharging head which has discharge holes for discharging liquid droplets; a conveyance device which conveys at least one of the discharging head and discharge receiving media in a direction substantially orthogonal to ... | 07/21/2009 |
| 7537308 | Data processing method and ink jet printing apparatus A method is provided which is intended to reduce a visibility of ink dots ejected onto a print medium during a preliminary ejection operation to produce a satisfactory printed image. Preliminary ejection data is compared with image data. When the preliminary ejectio... | 05/26/2009 |
| 7513594 | Spitting method of an array-type inkjet image forming apparatus A spitting method of an array-type inkjet image forming apparatus which prints one or more papers and then ejects ink several times to keep nozzles in the optimal condition for printing, in which the number of spitting dots is in proportion to the number of resting ... | 04/07/2009 |
| 7500733 | Ink jet printer In order to make maintenance of an ink jet printer less time-consuming, when ink is to be purged from ink jet heads 1, a unit conveying mechanism 30 moves a feeding plane 11a of a feeding sheet 11 to a retreated position that is in... | 03/10/2009 |
| 7475962 | Printhead cleaning device for a large printer A printhead cleaning device for a large printer provided at a lateral side of a printing rail of the printer, it comprises a base and a swinging platform, wherein the base has four peripheral sides forming a receiving space, the swinging platform is movably and pivo... | 01/13/2009 |
| 7455386 | Inkjet-recording-head flushing method A method of flushing a nozzle of an inkjet recording head so as to recover an ink-ejection performance of the nozzle. The nozzle ejects, in a recording mode of the inkjet recording head, a plurality of droplets of an ink to record dot images, such that each of the d... | 11/25/2008 |
| 7431438 | Ink cartridge, recording apparatus employing ink cartridge, and manufacturing method for ink cartridge An ink cartridge which is detachably mountable to a liquid ejection type recording device including a liquid ejecting head for ejecting liquid onto a recording material while scanning the recording material in a direction crossing with a feeding direction of the rec... | 10/07/2008 |
| 7419241 | Image forming apparatus An image forming apparatus including a head part with an ejection port configured to eject ink, a discarded-ink tank configured to collect ejected or absorbed ink in order to restore a function of the ejection port, and a sensing device configured to sense the disca... | 09/02/2008 |
| 7413282 | Ink jet printing apparatus and preliminary ejecting method In both a full-line and a serial printer, the amount of ink passing through nozzles of print heads is sometimes decreased below a normal value before and during actual printing. In the printer of the present invention, a preliminary ejecting operation is performed t... | 08/19/2008 |
| 7407258 | Ink jet recording method, recording apparatus, and recorded object In an ink jet recording apparatus, it is detected whether or not an ejection has been performed at least one time while printing an image, with respect to each nozzle, within a predetermined period (preliminary on-paper ejection cycle corresponding to the checking a... | 08/05/2008 |
| 7396095 | Ink jet printing apparatus and preliminary ink ejection method In a print head having arrays of large nozzles and small nozzles with different ink ejection volumes that are connected to a common ink chamber, the preliminary ejection operation is performed 29,000 times first on only the large nozzles at an ejection frequency of ... | 07/08/2008 |
| 7396105 | Ink jet recording apparatus Even in the case where preliminary ejection is performed by a recording head having an array of pigment ink ejection outlets and an array of dye ink ejection outlets in which a length of the pigment ink ejection outlet array is longer than a length of the dye ink ej... | 07/08/2008 |
