Purging Without A Cap Patents (Class 347/35)
  • Patent number: 8506046
    Abstract: A method is disclosed. The method includes receiving print job data, rasterizing the print job data to generate image data for each page of the print job data to be printed, calculating a coverage per unit area for two or more color planes of each page of the image data and calculating a flushing mask to flush nozzles of the inkjet print head.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: August 13, 2013
    Assignee: InfoPrint Solutions Company LLC
    Inventors: Kartheek Chandu, Larry Ernst
  • Patent number: 8500240
    Abstract: An image forming apparatus includes a recording head configured to have a nozzle face on which nozzles that discharge liquid droplets are formed; a cap configured to cap the nozzle face of the recording head; a discharge path configured to be connected to the cap; a suction pump configured to be provided in the discharge path and be made of a tube pump; and an atmosphere opening part configured to open an airtight space, created when the nozzle face is capped by the cap, to the atmosphere. The atmosphere opening part is configured to communicate with the inside of the cap at a position higher than a surface of liquid discharged into the cap, and a check valve configured to prevent a flow of the liquid toward the cap from the suction pump is provided in the discharge path.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: August 6, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Mitsuya Matsubara, Akiyoshi Tanaka, Yoichi Ito, Tomomi Katoh, Fumitaka Kikkawa, Soyoung Park, Kunihiro Yamanaka, Kazuki Suzuki, Kuniyori Takano, Honriku Jo, Yuji Tanaka, Satoshi Endoh
  • Publication number: 20130187982
    Abstract: A liquid ejection device includes a head and a liquid-receiving section. The head has a plurality of nozzles configured and arranged to eject a liquid. The liquid-receiving section has a sloped face for receiving a liquid ejected from the nozzles when flushing is carried out by the head. The sloped face is formed on an elongated member and is configured and arranged to receive the liquid ejected downward from the nozzles. The nozzles forming at least one nozzle row extending in a direction along a longitudinal direction of the elongated member. The head being configured and arranged to carry out the flushing while travelling above the sloped face.
    Type: Application
    Filed: March 8, 2013
    Publication date: July 25, 2013
    Applicant: SEIKO EPSON CORPORATION
    Inventor: SEIKO EPSON CORPORATION
  • Patent number: 8480198
    Abstract: An image forming apparatus includes an ejection head having a plurality of nozzle arrays arranged in an orthogonal direction to an array direction thereof, a carriage on which the ejection head is loaded, and a moving unit that moves the carriage. The image forming apparatus further includes a control unit that controls the moving unit and the ejection head such that, when flushing is to be performed while the image is formed on a sheet as the carriage reciprocates, a liquid is ejected to an image forming region of the sheet from the plurality of nozzle arrays, the liquid is ejected to a first receiving area from a first nozzle array group disposed adjacent to an outward side, and the liquid is ejected to a second receiving area from a remaining second nozzle array group excluding the first nozzle array group and disposed adjacent to a homeward side.
    Type: Grant
    Filed: January 14, 2011
    Date of Patent: July 9, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Katsuhiko Nishizaka
  • Patent number: 8469487
    Abstract: In a method for printing a plurality of pixels, each pixel of a plurality of pixels is printed by controlling an inkjet print head to provide for each pixel at least two ink drops at different positions in a print head movement direction, the print head having a plurality of trenches supplying ink to a plurality of sets of nozzles. The at least two ink drops forming first pixels of said plurality of pixels are fired from the same trench.
    Type: Grant
    Filed: May 28, 2010
    Date of Patent: June 25, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sergio Puigardeu, Luis Garcia, M. Isabel Borrell, Marc Serra, Angel Martinez
  • Patent number: 8465116
    Abstract: In a printing apparatus and a printing method, the frequency of an operation of detecting an inappropriate ejection state of each ejection port is increased, while allowing a decrease in throughput to be suppressed. The printing apparatus includes a first ejection state sensing unit for carrying out an ejection state sensing process in which determination of whether or not ejected droplets are normal is executed, during a single process, on all the ejection ports formed in the print head. The printing apparatus further includes a second ejection state sensing unit for carrying out the ejection state sensing process on the ejection ports in a part of a plurality of ejection port groups into which the plurality of ejection ports formed in the print head are divided.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: June 18, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tatsuya Mori, Kiyomi Aono
  • Publication number: 20130093814
    Abstract: A printhead has a nozzle plate, having an array of nozzles through which ink is expelled, a low adhesion, oleophobic polymer coating on a front face of the nozzle plate. A printer has a source of solid ink, a heater arranged to-heat the solid ink and convert it to liquid ink, and a printhead, the printhead having a nozzle plate, having an of nozzles through which ink is expelled, a low adhesion, oleophobic polymer coating on a front face of the nozzle plate, the coating selected to dispel the liquid ink prior to the liquid ink returning to solid form, and a wiper positioned to wipe the front face of the nozzle plate.
    Type: Application
    Filed: October 17, 2011
    Publication date: April 18, 2013
    Applicant: XEROX CORPORATION
    Inventors: Peter Michael Gulvin, Varun Sambhy, Hong Zhao, Kock-Yee Law, James M. Casella
  • Patent number: 8419161
    Abstract: A method of removing flooded ink from an ink ejection face of a printhead. The method comprises moving a surface past the ink ejection face and transferring the flooded ink onto the moving surface, where no part of the surface contacts the face. The surface can be a surface of a disposable sheet. The disposable sheet can be absorbent. The disposable sheet can be different from print media used for printing.
    Type: Grant
    Filed: March 31, 2010
    Date of Patent: April 16, 2013
    Assignee: Zamtec Ltd
    Inventors: Brian Robert Brown, Vesa Karppinen, Kia Silverbrook
  • Patent number: 8403439
    Abstract: A flow rate control device includes a pressure generating unit that delivers a liquid to a liquid reservoir unit including an ejecting port; a flow rate control unit that controls a flow rate of the pressure generating unit by performing a first flow rate control and a second flow rate control, the first flow rate control being to raise a pressure inside the liquid reservoir unit up to a target pressure at a first pressure change rate which is sufficiently high to float air bubbles adhering to a wall surface inside the liquid reservoir unit, the second flow rate control being to maintain the target pressure or to lower the pressure inside the liquid reservoir unit from the target pressure at a second pressure change rate lower than the first pressure change rate in order to eject air bubbles floating inside the liquid reservoir unit from the ejecting port.
    Type: Grant
    Filed: May 20, 2011
    Date of Patent: March 26, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Kumiko Tanaka, Jun Isozaki, Masaki Kataoka
  • Patent number: 8403456
    Abstract: A fluid droplet discharge device executes a head cleaning process to quickly remove bubbles that have entered the fluid supply path when it is likely that bubbles have entered in a flushing process. If the ink cartridge cover 2b is opened during flushing and it is possible that bubbles have entered the ink supply path, ?N1 is added to the count Na of the cleaning intensity setting counter N. If the count Na exceeds a threshold value Nmax in a head cleaning operation performed when a defective nozzle is detected, cleaning (CL4) with the highest cleaning intensity level is applied. Because ?N1 is added to the count Na if the ink cartridge cover 2b is opened when flushing, the timing when this cleaning operation (CL4) is applied is accelerated. Bubbles that have entered the fluid supply path can therefore be removed sooner.
    Type: Grant
    Filed: July 24, 2009
    Date of Patent: March 26, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Kiyomi Kuroda, Hiroyuki Motoyama
  • Patent number: 8398206
    Abstract: Wet wiping processing is performed on an ink ejection opening forming surface of a print head by use of a wiper. Then, as bubble removal processing, the print head is heated by use of either an electrothermal conversion element or a heat generating element located inside the print head, and then a control unit causes the print head to perform preliminary ejection K1 and preliminary ejection K2.
    Type: Grant
    Filed: December 1, 2010
    Date of Patent: March 19, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Wakako Yamamoto, Hidehiko Kanda, Susumu Hirosawa
  • Patent number: 8398216
    Abstract: A fluid reservoir assembly for supplying fluid to a printhead is provided. The assembly has a reservoir compartment in fluid communication with fluid channels for supplying the fluid to the printhead via a fluid outlet, the reservoir compartment having an air vent and a bypass fluid path interconnecting the fluid outlet and a well region within the compartment, and a valve in the bypass fluid path for priming the reservoir compartment with fluid via the bypass fluid path.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: March 19, 2013
    Assignee: Zamtec Ltd
    Inventors: Kia Silverbrook, Akira Nakazawa, Christopher Hibbard, Paul Ian Mackey, Norman Micheal Berry, Garry Raymond Jackson
  • Patent number: 8388102
    Abstract: A method of maintaining a fluid applicator unit of an image forming apparatus in which the fluid applicator unit includes a nozzle surface having nozzles is disclosed. The method includes ejecting fluid through nozzles of a fluid applicator unit of an image forming apparatus during a maintenance mode to maintain flow paths therethrough such that the fluid is emitted from the nozzles in a form of fluid drops. The method also includes receiving the fluid drops emitted from the nozzles during the maintenance mode on a receiving member to form waste liquid therefrom and directing the waste liquid from the receiving member to a waste receiving unit through a liquid passage. The method also includes directing aerosol formed from the fluid drops emitted from the nozzles to the aerosol receiving unit through an aerosol passage such that the aerosol passage is separate from the liquid passage and receiving the aerosol directed to the aerosol receiving unit.
    Type: Grant
    Filed: March 30, 2011
    Date of Patent: March 5, 2013
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Ainhoa Urbistondo, Marta Coma, Francesc Melia
  • Patent number: 8382239
    Abstract: A printhead cleaning device includes a housing having an opening and an ink receptacle positioned within the opening. A member has a first end positioned in the ink receptacle and a second end that extends out of the opening in the housing. The member is configured to contact a drip bib and provide a path for liquid ink to move from the drip bib to the ink receptacle.
    Type: Grant
    Filed: January 31, 2011
    Date of Patent: February 26, 2013
    Assignee: Xerox Corporation
    Inventors: Roger G. Leighton, Michael Quoc Lu
  • Patent number: 8382241
    Abstract: An image forming apparatus includes a recording head having nozzles to form an image by squirting droplets onto a recording medium, a transfer member transferring the recording medium and having holes which allows passage of droplets squirted by the recording head for non-printing discharge, an area detecting unit to detect a plurality of non-printing discharge areas that are areas between adjacent recording media, and a non-printing discharge instructing unit to cause the nozzles to perform non-printing discharge such that all the nozzles perform non-printing discharge at least once in the non-printing discharge areas.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: February 26, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Atsushi Saitoh, Manabu Izumikawa, Kazumi Kobayashi, Shiho Shimosaka, Shingo Shiramura, Shohgo Takeuchi
  • Patent number: 8371677
    Abstract: An inkjet printing apparatus is provided by which, even under an environment in which water in ink easily evaporates (e.g., a high temperature and a low humidity), the humidification of the ambience near the nozzle opening can be provided by the control depending on the temperature and humidity or the printing mode. Thus, such an inkjet printing apparatus is provided that can provide a high-quality printing while reducing the amount of waste ink or cost. To realize this, ink is ejected to the platen absorber and is humidified. Then, water evaporated from the platen absorber is used to humidify the nozzle section of the print head.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: February 12, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventor: Takuya Fukasawa
  • Patent number: 8360550
    Abstract: A fluid ejecting apparatus including: a fluid ejection head configured to eject fluid from a plurality of nozzles; a medium supporting member configured to support a medium at a position opposing the fluid ejection head, a thread-type fluid absorbing member configured to absorb the fluid ejected from the nozzles; and a moving mechanism configured to cause the fluid absorbing member to move between a first position opposing the nozzles between the fluid ejection head and the medium supporting member and a second position farther from a nozzle surface of the fluid ejection head than a transporting area of the medium, wherein the fluid is ejected from the nozzles to the fluid absorbing member at the first position.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: January 29, 2013
    Assignee: Seiko Epson Corporation
    Inventors: Hisashi Miyazawa, Nobuhito Takahashi
  • Patent number: 8360563
    Abstract: A damper control section controls a piezoelectric actuator attached to a damper, in a printing mode of jetting an ink by a pressure applied by an actuator for jetting, to suppress a pressure fluctuation in an ink storage chamber, and controls the piezoelectric actuator, in a purge mode of discharging forcibly the ink in the ink-jet head as a waste liquid, to transport the ink in the ink storage chamber to the ink-jet head.
    Type: Grant
    Filed: February 27, 2009
    Date of Patent: January 29, 2013
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Yoichiro Shimizu
  • Patent number: 8360549
    Abstract: An inkjet image forming apparatus and a spitting method therefor. The inkjet image forming apparatus includes: a printhead including a plurality of nozzles arranged across a printing medium transfer path; a maintenance unit including a spitting groove to receive ink ejected during a spitting operation of the printhead; and a controlling unit to control the printhead so that spitting is performed by groups of the nozzles, when each group faces the spitting groove.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: January 29, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Hyoung-dong Choi
  • Patent number: 8348364
    Abstract: A fluid supply device, a printing device, and a method of cleaning a printing device are disclosed. A fluid supply device includes a main tank, a fluid chamber, a fluid-discharging head, a movable carriage, an expansion mechanism that expands the fluid chamber to draw fluid from the main tank, a suction mechanism, a remaining fluid detection unit, a comparison unit that compares the remaining fluid volume in the main tank with a specified value, and a setting unit that sets a cleaning mode. The expansion mechanism is actuated via a movement of the movable carriage. The setting unit sets a first cleaning mode in which a first amount of fluid is vacuumed from the nozzle or a second cleaning mode in which a second amount of fluid is vacuumed from the nozzle that is less than the first amount. The cleaning mode is selected in response to the amount of fluid remaining in the main tank.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: January 8, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Susumu Taga
  • Patent number: 8342639
    Abstract: A head cleaning method of wiping and cleaning a nozzle surface of a head with a band-shaped liquid absorbing body by, while pressing and abutting a pressing member on which the liquid absorbing body that travels is wrapped against the nozzle surface of the head, sliding the pressing member over the nozzle surface of the head, includes: a first cleaning step of wiping and cleaning the nozzle surface of the head with a non-wet region of the liquid absorbing body; a wet region forming step of forming a wet region on the liquid absorbing body; and a second cleaning step of wiping and cleaning the nozzle surface of the head with the wet region of the liquid absorbing body.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: January 1, 2013
    Assignee: Fujifilm Corporation
    Inventor: Hiroshi Inoue
  • Patent number: 8317296
    Abstract: A recording apparatus includes: a recording head that ejects ink; a sheet material that receives ink discarded from the recording head directly from the recording head or indirectly via another member; an ink absorption material that absorbs ink, and includes an ink absorption surface that forms a surface that intersects with an ink receiving surface of the sheet material that receives ink, and faces the ink receiving surface; and a sheet material movement unit that causes the sheet material to slide in at least a direction in which the ink receiving surface approaches the ink absorption surface.
    Type: Grant
    Filed: August 2, 2010
    Date of Patent: November 27, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Takayuki Shiota
  • Patent number: 8303061
    Abstract: A fluid supply device, a printing device, and a method of cleaning a printing device are disclosed. A fluid supply device includes a main tank, a fluid chamber, a fluid-discharging head, a movable carriage, an expansion mechanism that expands the fluid chamber to draw fluid from the main tank, a suction mechanism, a remaining fluid detection unit, a comparison unit that compares the remaining fluid volume in the main tank with a specified value, and a setting unit that sets a cleaning mode. The expansion mechanism is actuated via a movement of the movable carriage. The setting unit sets a first cleaning mode in which a first amount of fluid is vacuumed from the nozzle or a second cleaning mode in which a second amount of fluid is vacuumed from the nozzle that is less than the first amount. The cleaning mode is selected in response to the amount of fluid remaining in the main tank.
    Type: Grant
    Filed: November 3, 2009
    Date of Patent: November 6, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Susumu Taga
  • Patent number: 8297734
    Abstract: First, second, and third ink absorbing bodies are accommodated in a container of a recovery reservoir in this order from the side corresponding to a bottom surface of the container, so that an introduction chamber is defined in the middle of a recovery space. A lid having a shutter plate and a communication hole is located over the third ink absorbing body. The upper side of the introduction chamber is covered by the shutter plate to suppress volatilization of solvent element of waste ink introduced into the introduction chamber. In addition, the communication hole is located in a portion of the upper surface of the third ink absorbing body, so that solvent element of ink absorbed by the third ink absorption body volatilizes.
    Type: Grant
    Filed: March 18, 2009
    Date of Patent: October 30, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Shuhei Harada, Keiji Matsumoto, Manabu Yamada
  • Patent number: 8287087
    Abstract: An ink discharging device may comprise a head that is configured to print an image by discharging black ink and ink other than the black ink onto a print medium. The ink discharging device may further comprise a print controller that is configured to control the head such that the image is printed on the print medium on the basis of print data. The print controller may be configured to control the head such that flushing of the ink other than the black ink is performed at a black-color print area on the print medium onto which the head discharges the black ink on the basis of the print data.
    Type: Grant
    Filed: October 30, 2009
    Date of Patent: October 16, 2012
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Toshiyuki Sano
  • Patent number: 8287066
    Abstract: This invention pertains to a drop-on-demand ink jet printing method, more particularly to a method of printing wherein a purge image is logically combined with a selected image so as to insure a desired amount of drop firing from every jet of an ink jet printhead for every page printed. The inventive method avoids image defects that could otherwise occur as a result of faulty drop firing from infrequently used nozzles. Purge image data that specifies the deposition of at least one ink dot on at least one predetermined pixel location on each of the plurality of image scanlines is constructed and stored in a purge image memory accessible by the printing apparatus. Imperceptible purge image patterns are constructed having blue noise spatial frequency characteristics and optical density levels equal to or less than 0.01 OD above print medium base OD. A plurality of purge image data sets are constructed and stored for retrieval to adapt to a variety of conditions.
    Type: Grant
    Filed: March 14, 2008
    Date of Patent: October 16, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventors: Christian Jackson, Stephen F. Pond
  • Patent number: 8282188
    Abstract: The inkjet head cleaning apparatus includes: a cleaning liquid holding device having a cleaning liquid holding surface with which cleaning liquid is held and applied to a liquid ejection surface of an inkjet head in which the liquid ejection surface is oblique to a horizontal plane, the cleaning liquid holding surface being arranged with an inclination such that the cleaning liquid holding surface is substantially parallel with the liquid ejection surface of the inkjet head and faces the liquid ejection surface at a prescribed distance from the liquid ejection surface; and a cleaning liquid supply device which has a cleaning liquid supply port through which the cleaning liquid is supplied from an upper portion of the inclined cleaning liquid holding surface in such a manner that the cleaning liquid slides down the inclined cleaning liquid holding surface while forming a meniscus between the cleaning liquid holding surface and the liquid ejection surface.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: October 9, 2012
    Assignee: FUJIFILM Corporation
    Inventor: Noriaki Maida
  • Patent number: 8277019
    Abstract: A printing apparatus comprises a jetting assembly including a plurality of nozzles for ejecting droplets on a substrate; an enclosure defining a print zone within which the jetting assembly prints on the substrate, the enclosure including an inlet for introducing a material associated with controlling an environment of the enclosure.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: October 2, 2012
    Assignee: FUJIFILM Dimatix, Inc.
    Inventors: Richard Baker, Edward R. Moynihan
  • Patent number: 8277020
    Abstract: A liquid ejection method includes determining, according to image data, an ejection pixel that is a pixel at which a liquid is to be ejected and a non-ejection pixel that is a pixel at which a liquid is not to be ejected; determining, according to the image data, a nozzle requiring flushing; and ejecting liquid from the nozzle requiring flushing to the non-ejection pixel adjacent to the ejection pixel, the non-ejection pixel being among pixels associated with the nozzle requiring flushing.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: October 2, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Toru Miyamoto, Hirokazu Nunokawa
  • Patent number: 8272714
    Abstract: A print spittoon is removably mounted in a slot of a print support to periodically receive drops of liquid spit from a printhead. Among other features, the spittoon includes a portion of an absorbent sheet provided a location recessed from a surface of the print support.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: September 25, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jeffrey R. Blackman, Mark D. Groenenboom
  • Patent number: 8272705
    Abstract: A liquid ejection apparatus including: a flushing-operation-data producing section which produces flushing-operation data for flashing of ink; a second-liquid-ejection-data producing section which produces data about ejection of treatment liquid such that (i) the treatment liquid is to be landed on a dot area on which the ink is to be landed upon forming an image dot among dot areas and (ii) an amount of the treatment liquid landed to be on at least one dot area on which the ink is to be landed upon flashing of the ink is made smaller, by referring the flushing-operation data produced by the flushing-operation-data producing section, than an amount of the treatment liquid to be landed on a dot area on which the ink is not to be landed upon flashing; and a second-liquid controlling section which controls a head on the basis of the data produced by the second-liquid-ejection-data producing section.
    Type: Grant
    Filed: July 13, 2010
    Date of Patent: September 25, 2012
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Yoshihiro Itogawa
  • Publication number: 20120229565
    Abstract: A fluid ejection device comprising: a first mid-recording flushing unit for ejecting fluid from the plurality of nozzles and carrying out flushing under a first fluid ejection condition during a recording process in accordance with the recording data; and a second mid-recording flushing unit for ejecting the fluid from the nozzles on the head part and carrying out flushing under a second fluid ejection condition in which at least one of the ejection frequency and quantity of the droplets of fluid ejected from the nozzles is greater than with the first fluid ejection condition when the head part is in a recording initiation part of an image that is formed on the recording medium during the recording process.
    Type: Application
    Filed: March 7, 2012
    Publication date: September 13, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Tomohiro YUDA, Ryoichi TANAKA
  • Patent number: 8262196
    Abstract: Methods and apparatus for user customization of flush patterns in an ink-based printing system. Features and aspects hereof provide for user input to define a flush pattern and to define a location at which the flush pattern is to be placed on sheetside images. By integrating the flush pattern as defined by the user into the sheetside images, the flush pattern may convey useful information or may at least be aesthetically acceptable as compared to prior flush pattern definitions. The user may select among a plurality of standard, pre-defined patterns and locations or may define a fully customized pattern to be placed at a fully customized location. Text or other potentially useful patterns may be defined by the user. Analysis of the sheetside images may permit the user to define placement of the pattern so as to avoid occluding information imprinted on the sheetside images.
    Type: Grant
    Filed: December 27, 2007
    Date of Patent: September 11, 2012
    Assignee: Ricoh Production Print Solutions LLC
    Inventors: Joan L. Mitchell, Stephen G. Price
  • Patent number: 8262194
    Abstract: An inkjet printer (10) comprising: an inkjet printing head (32); a service station (101) provided for the maintenance of the printing head (32) and having a protective cap (102), in turn adapted to be coupled in contact with a front surface (32b, 32c) of the printing head (32) to protect it; and a cleaning device (110), associated with the service station, wherein the cleaning device (110) comprises a receptacle (104) adapted to be moved between a first operative position (P5), in which the receptacle (104) is arranged between the protective cap (102) and the front surface of the printing head (32) to receive a determined amount of ink ejected, in the form of drops, by the printing head (32) during programmed cleaning cycles, and a second operative position (P6), in which the receptacle (104) is laterally displaced with respect to the protective cap (102), to allow the contact coupling between the printing head (32) and the protective cap (102).
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: September 11, 2012
    Assignee: Telecom Italia S.p.A.
    Inventors: Mario Manzone, Fabio Dondi
  • Patent number: 8259350
    Abstract: A print defect management device that supports job-specific print defect management automatically assesses print job pages to determine the severity of image quality defects likely to occur on one or more selected printers. Views of identified troubled pages may be rendered to include approximations of color and image quality defects based on the original page image data, and each printer's color rendition data and defect data, thereby allowing troubled pages for one or more selected printers to be viewed prior to printing. Suggested changes may be automatically or manually applied. Once satisfied with the image quality of print job pages rendered for a specific printer, a user may submit the print job to the same printer, thereby assuring that the user's image quality expectations are met in the printed product. The device may support job-specific print defect management with both local and/or remote printers via LAN, WAN and/or Internet based connectivity.
    Type: Grant
    Filed: January 13, 2009
    Date of Patent: September 4, 2012
    Assignee: Xerox Corporation
    Inventors: Wencheng Wu, Edul N. Dalal, D. Rene Rasmussen
  • Patent number: 8246145
    Abstract: An apparatus for use as part of an inkjet printer to clear an ink drop stalagmite in the printer. In one embodiment the apparatus includes a clearing device coupled to an access door of the inkjet printer, wherein upon operation of the access door the clearing device at least partially clears the ink drop stalagmite.
    Type: Grant
    Filed: July 14, 2010
    Date of Patent: August 21, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Teressa L. Roth, Kok Leong Law, Hai-Lung Hung, Kieran B. Kelly, John J. Cantrell
  • Patent number: 8240811
    Abstract: An ink-jet recording apparatus including: an ink-jet head; a feeding mechanism which includes a feeding member having a feeding surface and which is configured to feed a sheet on the feeding surface in a feeding direction; a supplying mechanism which supplies the sheet to the feeding mechanism; and a controller which controls operations of the ink-jet head, the feeding mechanism, and the supplying mechanism, wherein the controller is configured to perform a first control in which the ink is ejected directly onto the feeding surface and a second control in which the sheet is, after the first control, supplied from the supplying mechanism to the feeding mechanism such that the sheet absorbs the ink on the feeding surface that has been ejected from the ink-jet head in the first control, and in which the sheet is fed by the feeding mechanism during the ejection of the ink.
    Type: Grant
    Filed: March 26, 2010
    Date of Patent: August 14, 2012
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Yuji Sakano
  • Patent number: 8240812
    Abstract: A recording apparatus includes a recording head which discharges ink, an ink absorbing member which receives ink uselessly ejected by the recording head, directly from the recording head, or indirectly through another member, and a vibration application unit which applies vibration to the ink absorbing member.
    Type: Grant
    Filed: July 29, 2010
    Date of Patent: August 14, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Kazuhiko Tsuyama
  • Patent number: 8235497
    Abstract: A target medium is placed on a first region. A liquid absorbing member is placed in at least a second region which is adjacent to the first region. A liquid ejection head is movable above the first region and the second region, and provided with a plurality of liquid ejecting sections from which liquid droplets are ejected. Each of the liquid ejecting sections is configured so as to eject at least one liquid droplet toward the target medium when it is placed above the first region, and to flush a prescribed amount of liquid toward the liquid absorbing member when it is placed above the second region. The liquid ejecting sections are arranged such that at least one of the liquid ejecting sections can be placed above the first region when another one of the liquid ejecting sections is placed above the second region.
    Type: Grant
    Filed: June 18, 2010
    Date of Patent: August 7, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Kaoru Momose
  • Patent number: 8231205
    Abstract: A fluid ejecting head includes a fluid storage chamber that temporarily stores a fluid, which is supplied from a fluid supply port, a plurality of pressure chambers, to which the fluid stored in the fluid storage chamber is supplied through a plurality of fluid supply paths, respectively, a plurality of driving elements that change pressure in the pressure chambers, respectively, and a plurality of nozzle openings, from which the fluids contained in the pressure chambers are ejected when the driving elements are driven, respectively. A specific driving element most distant from the fluid supply port among the driving elements has a maximum capability to discharge the air bubbles in the fluid from the nozzle opening among the driving elements.
    Type: Grant
    Filed: March 13, 2008
    Date of Patent: July 31, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Shigeki Suzuki
  • Patent number: 8210643
    Abstract: A liquid droplet jetting apparatus includes a jetting head unit which has a nozzle which jets droplets of a liquid, and a heat generating section, a suction port which is formed in the jetting head unit, and which opens near the nozzle, and a suction device which sucks air around the nozzle from the suction port, and cools down the heat generating section of the jetting head unit by the air which is sucked. Since the heat generating portion is cooled down by the air sucked from the suction port by the suction device, it is possible to reduce a possibility of the heat of the heat generating section being transferred to the jetting head unit, and destabilizing an operation of the jetting head unit. Moreover, since the suction port opens near the nozzle, it is possible to suck fine liquid droplets together with air around the nozzle.
    Type: Grant
    Filed: May 2, 2011
    Date of Patent: July 3, 2012
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Tomoyuki Kubo
  • Patent number: 8205972
    Abstract: An image forming apparatus includes a recording head having a nozzle surface in which a plurality of nozzles is formed; and a vibration generating mechanism which is arranged at a position away from a recording medium in a moving direction of a recording head, and which intermittently sucks or blows air from and to the nozzle surface of the recording head moved to the position. The vibration generating mechanism vibrates a meniscus of a liquid inside each of the nozzles. Accordingly, there is provided an image forming apparatus in which the liquid is not consumed unnecessarily and thus is economical, and which effectively facilitates maintenance and recovery of the jetting function of the nozzles.
    Type: Grant
    Filed: April 4, 2008
    Date of Patent: June 26, 2012
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Koichiro Hara
  • Patent number: 8205959
    Abstract: A method of maintaining a printhead in an operable condition is provided in which a pad is moved between a first position in which the pad is sealingly engaged with the printhead, a second position in which the pad is disengaged from the printhead and a third position in which the pad is engaged with a pad cleaner. The pad is biased towards the second position relative to the third position.
    Type: Grant
    Filed: September 21, 2008
    Date of Patent: June 26, 2012
    Assignee: Zamtec Limited
    Inventors: John Douglas Peter Morgan, Kia Silverbrook, Christopher Hibbard, Bruce Gordon Holyoake
  • Patent number: 8191989
    Abstract: A printing apparatus comprises: a temperature sensor configured to detect an environmental temperature of the printing apparatus; a suction unit configured to suck ink from a printhead according to a target suction amount indicating amount of ink that the suction unit should suck per unit time at a predetermined environmental temperature; and a controller configured to cause the suction unit to suck ink such that the target suction amount in a case where the environmental temperature is higher than a predetermined temperature is greater than the target suction amount in a case where the environmental temperature is lower than the predetermined temperature.
    Type: Grant
    Filed: April 16, 2010
    Date of Patent: June 5, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Genji Inada
  • Patent number: 8167402
    Abstract: 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 area of dots formed by landing ink droplets ejected from the printing head for the maintenance ejection onto the printing medium is smaller than an area of similar dots formed by a normal printing. Specifically, by flowing currents having different waveforms into an ejection heater of the printing head depending on the ejection for printing an image and the maintenance ejection, an area of dots formed by the maintenance ejection can be smaller than an area of dots formed by the normal ejection for printing an image.
    Type: Grant
    Filed: December 28, 2006
    Date of Patent: May 1, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshinori Misumi, Nobuyuki Matsumoto, Hiroyuki Murayama
  • Patent number: 8162436
    Abstract: A fluid discharging apparatus including a head that has a nozzle which discharges fluid from the nozzle and a sheet shaped wiping member for wiping a nozzle surface of the head. The wiping member is moved relative to the nozzle surface so that portions of the wiping member are sequentially in contact with the nozzle surface in order to wipe the nozzle surface.
    Type: Grant
    Filed: July 1, 2008
    Date of Patent: April 24, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Masaru Takahashi, Eiichiro Watanabe, Jun Shimazaki, Takayuki Kawakami
  • Patent number: 8157348
    Abstract: A page wide array printer comprises a print head bar which carries an array of print nozzles, and which is static during a printing operation. A carriage has print head service elements. The print head bar is movable perpendicularly to the plane of the print medium beneath the print head, between a lowered print position and a raised service position. The carriage is moveable along the print head to perform a service operation when the print head is in the raised position.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: April 17, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Silvia Miramanda, Alex Andrea, Angel Martinez, Joan Jorba, Paul Ray
  • Patent number: 8152271
    Abstract: 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 the nozzle forming surface on the transport path, and a liquid receptor transport unit transporting a liquid receptor for receiving the liquid ejected from the nozzles as a waste liquid such that the liquid receptor passes through the position opposite the nozzle forming surface on the transport path. With rotation of the target transport unit, a mechanism unit including a target transport member for transporting the target in a transport direction is able to be attached and detached at a position out of a mechanism portion of the liquid receptor transport unit with respect to the liquid ejecting apparatus.
    Type: Grant
    Filed: March 26, 2009
    Date of Patent: April 10, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Masato Mitsuhashi, Makoto Kawamoto, Koji Higuchi
  • Patent number: 8152272
    Abstract: 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 scanning direction and a sub scanning direction for printing by the inkjet head on the print medium; and a print control unit which controls the inkjet head and the moving mechanism so as to execute flushing printing on the print medium for preventing clogging of the nozzles while moving the inkjet head relative to the holding member in a first printing direction in the main scanning direction and to execute pattern printing on the print medium according to pattern printing data while moving the inkjet head relative to the holding member in a second printing direction in the main scanning direction.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: April 10, 2012
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Yasuhiko Kawaguchi, Motoshi Kishi, Haruna Kato
  • Patent number: 8147032
    Abstract: A liquid droplet ejection apparatus performs a drawing operation on a workpiece set on a set table by driving the ejection of a functional liquid droplet ejection head in a head unit while moving the head unit in a main scanning direction relative to the set table facing a drawing area by an X-axis table. The liquid droplet ejection apparatus includes a periodic flushing unit which is disposed on a main scan moving axis at a position offset from the drawing area towards the main scanning direction and which receives forcible ejection from the functional liquid droplet ejection head during non-drawing time and a pre-drawing flushing unit which is disposed adjacent to the set table and faces the drawing area and which receives forcible ejection from the functional liquid droplet ejection head performed immediately before starting the drawing operation.
    Type: Grant
    Filed: November 22, 2010
    Date of Patent: April 3, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Kenji Kojima