Responsive To Condition Patents (Class 347/23)
  • Patent number: 8328322
    Abstract: An inkjet recording device includes an ink cartridge receiving unit configured to receive an ink cartridge, an inkjet head configured to eject ink, an ink passage configured to transport the ink from the ink cartridge to the inkjet head, a detecting unit configured to detect a type of ink cartridge received in the ink cartridge receiving unit, a waste ink collection unit including an absorber configured to absorb the ink, a discharging unit configured to discharge the ink remaining in the ink passage at one of a first discharging rate and a second discharging rate, and a controller configured to control the discharging unit to discharge an amount of ink. The controller is configured to control the discharging unit to discharge ink at one of the first discharging rate and the second discharging rate corresponding to the type of the ink cartridge detected by the detecting unit.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: December 11, 2012
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Masashi Ueda
  • Patent number: 8330998
    Abstract: A scanner device includes a scanner body enclosed by a housing and an external cover covering an outer side of the housing. The external cover is comprised of a plurality of external members. By spacing the adjacent external members apart from each other at the side edge parts of the housing, recesses are formed between the adjacent external members so as to constitute parts of the external design of the scanner body. Preferably, the side edge parts of the housing are exposed between the adjacent external members at the side edge parts of the housing, and information providing devices providing information on the scanner device are provided at the side edge parts of the housing exposed between the adjacent external members.
    Type: Grant
    Filed: August 14, 2009
    Date of Patent: December 11, 2012
    Assignee: PFU Limited
    Inventors: Shoji Yoshida, Hideaki Shibata, Yasuhiro Matsuda, Masaaki Yamashita
  • Patent number: 8322815
    Abstract: Provided is a method of cleaning a fluid ejecting apparatus including an ejection head including a plurality of ejection nozzles for ejecting a fluid to a target and a common fluid chamber from which the fluid is supplied to the ejection nozzles, the method including: performing a preliminary discharge operation for discharging the fluid from the ejection nozzles before the fluid is ejected to the target; detecting a fluid ejection state of the ejection nozzles after the preliminary discharge operation is finished; determining a processing parameter at the time of cleaning of the ejection head on the basis of the detected result; and performing cleaning with respect to the ejection heads on the basis of the processing parameter, wherein, in the performing of the preliminary discharge operation, the fluid of the amount corresponding to at least the volume of the common fluid chamber is ejected.
    Type: Grant
    Filed: December 10, 2008
    Date of Patent: December 4, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Kenji Tsukada
  • Patent number: 8314944
    Abstract: An image forming device includes a main body casing, a cover configured to be openable and closable with respect to the main body casing, a sensing unit configured to sense an opening-closing operation of the cover, a forming unit configured to form an image on a sheet, a detecting unit configured to perform a detecting operation to detect a deviation of an image forming position of the image to be formed by the forming unit, an accepting unit configured to accept a print request, and a control unit configured to control the detecting unit to perform the detecting operation in response to the print request being accepted when the sensing unit senses an opening-closing operation of the cover after execution of a previous detecting operation, and thereafter to control the forming unit to form the image in the image forming position corrected to cancel the deviation detected in the detecting operation.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: November 20, 2012
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Tsuyoshi Kushida
  • Patent number: 8303104
    Abstract: An inkjet recording apparatus to print onto a surface of a recording medium includes an endless rotation conveyance member with a plurality of through-holes; a suction unit to suction the recording medium on the surface of the endless rotation conveyance member; an ink discharge head including ink discharge nozzles; a blank discharge ink receiver to receive ink through the through-holes; a control unit to make the ink discharge nozzles discharge ink at a predetermined timing; and a fixed plate along an inner surface of the endless rotation conveyance member, the fixed plate including an opening formed in a position corresponding to the ink discharge nozzles and a through-hole. The blank discharge ink receiver is disposed corresponding to the opening of the fixed plate and in close contact with the fixed plate so that an inside space of the blank discharge receiver becomes a substantially closed space.
    Type: Grant
    Filed: March 16, 2010
    Date of Patent: November 6, 2012
    Assignee: Ricoh Company, Ltd.
    Inventor: Takashi Miyagi
  • 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
  • Publication number: 20120268522
    Abstract: A printing device has a print unit that ejects fluid from ejection nozzles and prints; an ejection test unit that checks if fluid is ejected from the ejection nozzles; a cleaning unit that performs a cleaning process in either a timed cleaning mode that performs a cleaning process at a predetermined interval, or an ejection test cleaning mode that performs a cleaning process based on a test result; a decision unit that determines whether to use the timed cleaning mode or the ejection test cleaning mode based on an operating condition of the print unit; and a mode changing unit that switches the mode between the timed cleaning mode and the ejection test cleaning mode according to the decision by the decision unit.
    Type: Application
    Filed: April 20, 2012
    Publication date: October 25, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Yosuke Hatao
  • Patent number: 8287084
    Abstract: There is disclosed a recording apparatus including a recording head, a feeding mechanism, a detector, and a controller. The recording head has an ejection surface from which a droplet of a liquid is ejected. The feeding mechanism includes a plurality of rollers and an endless feeder belt wound around the rollers and having a feeding surface opposed to the ejection surface, and feeds a recording medium placed on the feeding surface a part of which serves as a liquid-droplet ejection area onto which a droplet of the liquid is ejected. The detector detects a trigger for initiating a manual cleansing of the liquid-droplet ejection area. The controller controls the feeding mechanism such that when the detector detects the trigger, the liquid-droplet ejection area is located at a cleansing position where the liquid-droplet ejection area is not opposed to the ejection surface of the recording head.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: October 16, 2012
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Koji Ito
  • 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: 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: 8267497
    Abstract: A liquid ejecting apparatus including a liquid ejecting head having a supply portion, an ejecting portion, a discharge portion, and a filter portion dividing an internal passage within the head into an upstream passage communicating with the supply and discharge portions and a downstream passage communicating with the ejecting portion, and further including pumps respectively connected to the supply and discharge portions. The apparatus includes, and a control portion configured to control the pumps so as to satisfy a mathematical relationship among parameters, during a maintenance operation to discharge a supplied liquid from the discharge portion through the upstream passage. A method is also provided to control the liquid ejecting apparatus.
    Type: Grant
    Filed: July 16, 2009
    Date of Patent: September 18, 2012
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Atsushi Hirota
  • 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: 8262191
    Abstract: A printing apparatus and a printing method in which an ejection failure state sensing process is sufficiently carried out while a decrease in printing throughput to be suppressed are provided. The print head includes at least two ejection ports through which different amounts of ink in the same color are ejected; both ejection amounts are equal to or smaller than 5 pl. The printing apparatus carries out a first ejection failure state sensing process for sensing a first ejection ports which have the smallest opening area in the ejection ports formed in the print head. The printing apparatus also carries out a second ejection failure state sensing process for sensing an ejection state in which ink is ejected through all the ejection ports in the print head. When any ejection port is determined to be in an inappropriate ejection state, the printing apparatus carries out compensation printing.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: September 11, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Tatsuya Mori
  • Patent number: 8240807
    Abstract: One exemplary embodiment is a method that performs a calibration process for determining a number of spit and wipe operations to place each of multiple dies on a print cartridge in a stable state.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: August 14, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Behnam Bastani, Alejandro Campillo Agusti, Bryan S. Ly
  • Patent number: 8235483
    Abstract: A droplet jetting device that includes a recording head section, a pressure sensor and a regulation pump is provided. The recording head section includes a recording head that jets droplets from nozzles and records an image at a recording medium. The pressure sensor is provided at the recording head section and senses a pressure of liquid supplied to the recording head by a main pump from a main tank. The main tank is disposed at a position away from the recording head section. The regulation pump is provided at the recording head section that is smaller in scale than the main pump and regulates pressure of the liquid such that the pressure of the liquid sensed by the pressure sensor is constant.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: August 7, 2012
    Assignee: FUJIFILM Corporation
    Inventors: Yoshinori Kato, Takamichi Fujii, Shuhei Hoshino
  • Patent number: 8231198
    Abstract: A method of printing with a printing system comprising an array of print heads, the array of print heads including a redundant print head, and a service station, includes, with the redundant print head located at the service station, printing using a remainder of the array of print heads; and positionally and functionally replacing a second print head in the array with the redundant print head while printing continues.
    Type: Grant
    Filed: March 29, 2012
    Date of Patent: July 31, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Ronald A Askeland, William S Osborne, Thomas M Sabo
  • Patent number: 8231201
    Abstract: In an inkjet recording device, ink droplets remaining on a nozzle surface are wiped off and the wiped off ink droplets are prevented from being scattered so as to stably form good quality images. When the wiper blade wiping the nozzle surface of the recording heads to wipe off the ink droplets and the like is separated from the nozzle surface and the bend of the wiper blade is straightened to restore to its idle position, a reaction force eliminating member absorbs the reaction force generated and softly restores the wiper blade to its idle position. As a result, the reaction force caused when the bend of the wiper blade is suddenly straightened is controlled, thereby preventing the ink drops and foreign matter on the header of the wiper blade from being scattered and avoiding the contamination of the inside of the inkjet recording device.
    Type: Grant
    Filed: February 6, 2008
    Date of Patent: July 31, 2012
    Assignee: Ricoh Company, Ltd.
    Inventor: Shigeyuki Ito
  • Publication number: 20120176438
    Abstract: An inkjet recording apparatus that suppresses temperature rising of a recording head to decrease standby time when the recording head is high in temperature, thereby reducing a drop in recording speed and degradation in image quality. The inkjet recording apparatus includes a recording head configured to have a discharge port surface in which a discharge port for discharging ink is formed, a temperature sensor configured to detect temperature of the recording head, and a cleaning unit configured to make contact with the recording head to clean the discharge port surface. The inkjet recording apparatus controls whether to make the cleaning unit contact the discharge port surface based on the recording head temperature detected by the temperature sensor.
    Type: Application
    Filed: December 30, 2011
    Publication date: July 12, 2012
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Kazuo Suzuki, Masaya Uetsuki, Toshimitsu Danzuka, Masataka Kato, Tsuyoshi Ibe, Asako Tomida, Hiroaki Komatsu
  • Patent number: 8210629
    Abstract: A method of determining the state of a printhead/cartridge in a thermal inkjet printer. An inkjet printhead undergoes a jetting operation in which a jetting frequency is selected and a corresponding steady state printhead temperature is known. The printhead is heated to the steady state temperature. Then the printhead is jetted with all nozzles for a predetermined period of time. Temperature samples from the printhead are obtained and the change in the printhead temperature for a short period of time is used to determine a slope in the temperature change. From the slope of printhead temperature changes, the ink flow rate through the printhead can be determined. The flow rate of ink through the printhead can be used to determine the various states of the printhead, including out of ink, clogged, deprimed, a taped printhead, etc.
    Type: Grant
    Filed: May 20, 2009
    Date of Patent: July 3, 2012
    Assignee: Lexmark International, Inc.
    Inventors: Christopher Alan Adkins, Eric David Langevin, Jason Todd McReynolds, Robert Henry Muyskens, Nicholas Jon Post, Kent Lee Ubellacker
  • 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: 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: 8177324
    Abstract: Printers and apparatus to clean printer surfaces are disclosed. An example apparatus to clean a surface in a printer includes an endless cleaning material loop and an advancer to advance the cleaning material loop when the loop is not engaged with the surface and to not advance the loop when the loop is engaged with the surface.
    Type: Grant
    Filed: October 29, 2010
    Date of Patent: May 15, 2012
    Inventors: Gene D. Jones, Kenneth Williams, Jeffrey R. Blackman
  • Patent number: 8177315
    Abstract: A printing apparatus includes an ejection unit that ejects fluid from nozzles onto a target and a nozzle inspection unit that performs nozzle inspection to inspect whether the fluid is ejected. An automatic print setting unit sets a check pattern automatic print mode in which a check pattern for confirming whether the fluid is ejected from the nozzles. An automatic inspection setting unit, when a predetermined automatic inspection condition is established, sets an automatic nozzle inspection mode in which the nozzle inspection is performed. A cleaning unit performs nozzle cleaning to clean abnormal nozzles that are detected. When the automatic nozzle inspection mode is set, a control unit controls the nozzle inspection unit so as not to perform the nozzle inspection during a period from when one of printing based on the print data and printing of the check pattern is started until the other is finished.
    Type: Grant
    Filed: August 29, 2008
    Date of Patent: May 15, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Hironori Endo, Shinya Komatsu
  • Patent number: 8172359
    Abstract: An ink jet printer system includes a partially redundant page-wide array of moveable ink jet print heads in a print zone, means outside of the print zone for servicing the print heads, and a transfer system, configured to selectively move a redundant portion of the array of print heads out of the print zone for servicing while printing with a remainder of the array.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: May 8, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Ronald A Askeland, William S Osborne, Thomas M Sabo
  • Patent number: 8169658
    Abstract: A printing apparatus includes: an image data acquiring unit which acquires image data representing an image of a print target; a print data generating unit which on the basis of the image data generates print data for forming the image by allowing an ink head to perform scanning and record ink in a specific edge of a print medium more times than in a portion other than the specific edge; and a print control unit which performs printing on the image on the basis of the print data by controlling the ink head.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: May 1, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Akira Saito
  • Patent number: 8167400
    Abstract: A droplet ejecting head is formed with at least one nozzle and is configured to eject a liquid droplet through the at least one nozzle in a nozzle axis direction. A carriage supports the droplet ejecting head. A guide member extends in a predetermined direction and is configured to guide the carriage so that the carriage is movable in the predetermined direction. A moving section moves the carriage along the guide member. The droplet ejecting head is configured to eject a liquid droplet through the at least one nozzle onto an ejection object while the moving section moves the carriage. A vibration generating section vibrates the droplet ejecting head in such a manner that vibration of liquid held in the at least one nozzle includes a component in the nozzle axis direction.
    Type: Grant
    Filed: January 29, 2009
    Date of Patent: May 1, 2012
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Akira Iriguchi
  • Patent number: 8162433
    Abstract: A method enables an ink jet image generating system to select an operational mode in response to detection of a missing ink jet. The method includes generating a digital image of an ink image on an image receiving member of an ink jet image generating system, detecting missing inkjets in a printhead of an ink jet image generating system from the digital image of the ink image on the image receiving member, and selecting an operational mode for the ink jet image generating system in response to the detection of at least one missing ink jet.
    Type: Grant
    Filed: March 30, 2009
    Date of Patent: April 24, 2012
    Assignee: Xerox Corporation
    Inventors: Bhaskar T. Ramakrishnan, Mary Lynne Morrow
  • Patent number: 8162434
    Abstract: A head cap for protecting an ink ejecting face of an ink-jet head may be provided with a plate member. The plate member may be opposed to the ink ejecting face. The head cap may include a flexible, continuous lip, which projects from one surface of the plate member. Recesses may be formed in the one surface of the plate member. Through-holes may be formed through the bottom walls of the recesses, respectively. Films may further be used where each covers the associated through-hole and is joined partially to a circumferential edge portion of the associated recess.
    Type: Grant
    Filed: September 24, 2007
    Date of Patent: April 24, 2012
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Tadanobu Chikamoto, Hiroshi Taira
  • 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
  • Publication number: 20120086752
    Abstract: A recording apparatus includes: a feeding unit which feeds a recording medium in a feeding direction; a recording head which discharges ink onto the recording medium for recording; and a first cleaning unit which performs first cleaning on at least one of a side surface on an upstream side of the feeding direction in the recording head, a side surface on a downstream side thereof, and side surfaces on both sides of a width direction of the recording medium with respect to the feeding direction.
    Type: Application
    Filed: September 23, 2011
    Publication date: April 12, 2012
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Takuya YASUE
  • Patent number: 8147027
    Abstract: An ink jet printing apparatus and an ink jet printing method are provided which can perform ink ejection performance recovery operations on a print head at optimal timings while at the same time reducing a volume of ink discarded by the recovery operations. Thirty days after a previous recovery operation, a suction-based recovery operation is performed on the print head prior to the printing operation that forms an image on a print medium. The recovery operation is performed under the condition that a temperature increase of the print head caused by a preliminary ejection of the print head is not more than a predetermined value.
    Type: Grant
    Filed: January 31, 2008
    Date of Patent: April 3, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventor: Katsushi Hara
  • Patent number: 8147029
    Abstract: A liquid ejection apparatus includes a heater controller and a purge controller. The heater controller controls a heater to heat liquid in at least a part of a liquid path of a head when an ambient temperature of the head is lower than a first predetermined temperature. The purge controller controls a pressurizer so that: the pressurizer is continuously driven until a predetermined amount of liquid is ejected from ejection openings, when the ambient temperature is not lower than the first predetermined temperature; and the pressurizer is intermittently driven plural times until the predetermined amount of liquid is ejected from the ejection openings, when the ambient temperature is lower than the first predetermined temperature, an amount of liquid ejected from the ejection openings in response to a single driving action of the pressurizer being not larger than an amount of liquid heated by the heater.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: April 3, 2012
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Yoshihumi Suzuki
  • Patent number: 8147028
    Abstract: A nozzle inspection device includes an inspection electrode placed apart from a discharge unit with a gap therebetween, an inspection unit for inspecting the presence of a defective nozzle by discharging a fluid with respect to the inspection electrode in a state in which the electric field is generated by application of a voltage between the discharge unit and the inspection electrode, a detection unit for detecting whether the inspection unit is in a non-inspectiable state, and a gap adjustment unit for adjusting the gap by transferring either the discharge unit or the inspection electrode in a case in which the inspection unit is in the non-inspectable state.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: April 3, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Keigo Ito
  • Patent number: 8136909
    Abstract: In an ink jet print head formed with ejection nozzles, which may use a wiping member to wipe ink adhered to the surface of the ink jet print head, it is desired to be able to perform a wiping operation in any environment without requiring a large amount of space to accommodate the liquid used during the wiping operation. To this end, a cooling unit is used which can produce water by cooling the atmosphere. This cooling unit is operated to produce water, which is brought into contact with and transferred onto the wiping member before the wiping member performs wiping.
    Type: Grant
    Filed: December 27, 2005
    Date of Patent: March 20, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masashi Ogasawara, Mikio Sanada
  • Patent number: 8136917
    Abstract: An image forming apparatus includes: a liquid jetting head jetting a liquid to form an image; a recovery mechanism discharging the liquid in the liquid jetting head to an external part to recover jetting performance of the liquid jetting head; a controller controlling an operation of the recovery mechanism; and an information obtaining section obtaining predetermined information, wherein the controller controls the recovery mechanism according to the predetermined information obtained by the information obtaining section.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: March 20, 2012
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Hisaki Sakurai
  • Patent number: 8132889
    Abstract: A method for detecting ink flow through a printhead, due to a successful purging of the nozzles of a heater chip of the printhead, includes moving the printhead to a location in preparation for a purging operation such that a purge pump is connected in flow communication with heater chip nozzles, setting the manner in which the purge pump operates to suction ink through nozzles of the heater chip from a source of ink, performing a thermal analysis on the heater chip concurrently as the purge pump operates to determine whether ink is flowing through the heater chip nozzles and whether the purge pump should continue to operate, and adjusting the manner in which the purge pump continues to operate in response to the thermal analysis.
    Type: Grant
    Filed: November 14, 2008
    Date of Patent: March 13, 2012
    Assignee: Lexmark International, Inc.
    Inventors: Jason Todd McReynolds, Robert Henry Muyskens
  • Patent number: 8128191
    Abstract: A maintenance method is provided for a discharging head in which multiple discharging portions are arranged in line. The maintenance method includes the steps of performing an operation of continuously discharging droplets from one discharging portion or a plurality of unadjacent discharging portions, and repeating the operation for one discharging portion or a plurality of discharging portions adjacent to the previous discharging portion or the previous discharging portions in a predetermined direction.
    Type: Grant
    Filed: July 30, 2008
    Date of Patent: March 6, 2012
    Assignee: Sony Corporation
    Inventors: Soichi Kuwahara, Kazuyasu Takenaka
  • Patent number: 8123330
    Abstract: In an ink jet head using a thermal energy for ejecting ink, this invention aims to reliably and uniformly remove kogations deposited on a heat application portion in contact with the ink. To realize this objective, the upper protective layer is arranged in an area including the heat application portion so that it can be electrically connected to serve as an electrode which causes an electrochemical reaction with the ink. The upper protective layer is formed of a material containing a metal which is dissolved by the electrochemical reaction and which does not form, on heating, an oxide film which hinders the dissolution. With this arrangement, a reliable electrochemical reaction can be produced to dissolve a surface layer of the upper protective layer, thereby removing kogations on the heat application portion reliably and uniformly.
    Type: Grant
    Filed: April 26, 2011
    Date of Patent: February 28, 2012
    Assignee: Canon Kabushiki Kaisha
    Inventors: Toshiyasu Sakai, Ichiro Saito, Teruo Ozaki, Sakai Yokoyama, Takahiro Matsui, Takuya Hatsui, Kazuaki Shibata
  • Patent number: 8123331
    Abstract: An ink-jet printer performs formation of an image by jetting an ink from nozzles of an ink-jet head. When a power supply is switched ON after a time measuring section is not capable of measuring time due to the power supply has been switched OFF, then the ink-jet printer outputs to a display section a signal which causes a display control section, provided on a controller, to display a message asking a user whether or not a cleaning operation by a recovery operation control section is to be performed. Accordingly, any unnecessary operation for recovering the jetting function is reduced, solving problems such as waiting time required for performing the operation for recovering the jetting function and that the ink is consumed unnecessarily.
    Type: Grant
    Filed: September 24, 2008
    Date of Patent: February 28, 2012
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Tatsuya Shindo, Katsunori Nishida
  • Patent number: 8109597
    Abstract: An image forming apparatus which forms an image includes: an intermediate transfer body which is conveyed in a conveyance direction; a washing liquid application device which applies a washing liquid on the intermediate transfer body; a first wiping device which is arranged on a downstream side of the washing liquid application device in terms of the conveyance direction of the intermediate transfer body, the first wiping device abutting against the intermediate transfer body to wipe away the washing liquid on the intermediate transfer body; a second wiping device which is arranged on a downstream side of the first wiping device in terms of the conveyance direction of the intermediate transfer body, the second wiping device abutting against the intermediate transfer body to wipe away the washing liquid on the intermediate transfer body; and a control device which controls the first and second wiping devices so that the first wiping device abuts against the intermediate transfer body when the image is being fo
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: February 7, 2012
    Assignee: Fujifilm Corporation
    Inventor: Hisamitsu Hori
  • Publication number: 20120019590
    Abstract: An inkjet printer 1 includes an inkjet head 31 with nozzles for discharging ink, a pressurizer for pressurizing a route for ink supply to the inkjet head 31, a head driver 6 for driving the inkjet head 31, and a controller 8 operable for control the pressurizer to pressurize the route for a prescribed time to have fluxes of ink once spilt out of the nozzles and to render nozzles covered with spilt ink before use of the head driver 6 to drive the inkjet head 31 for discharge operation in a maintenance service to the inkjet head 31.
    Type: Application
    Filed: July 21, 2011
    Publication date: January 26, 2012
    Applicant: RISO KAGAKU CORPORATION
    Inventors: Toshihiro BANSYO, Asayo NISHIMURA, Hiroshi SUGITANI
  • Patent number: 8100500
    Abstract: An ink jet printer is provided with an ink circulation route which includes an ink jet head, an ink supply tank and an ink collection tank. A measuring unit obtains a value indicative of the flow resistance measured when ink flows from the ink supply tank to the ink collection tank through the ink jet head. A control unit is operable to select one of maintenance operations on the basis of the value indicative of measured flow resistance. When the flow resistance value is lower than a predetermined value, the control unit selects the operation of circulating ink around the ink circulation route as a maintenance operation, and the maintenance unit does not perform the maintenance operation which consumes some amount of ink. This configuration makes it possible to perform maintenance in accordance with the ink viscosity by use of a simple structure.
    Type: Grant
    Filed: May 14, 2009
    Date of Patent: January 24, 2012
    Assignee: Riso Kagaku Corporation
    Inventor: Toshihiro Bansyo
  • Patent number: 8100495
    Abstract: Disclosed is a thermal inkjet printhead including at least one volume-changing body that can be used to maintain a flow resistance of ink that flows into an ink chamber substantially constant over an operating temperature range for the thermal inkjet printhead. The volume-changing body can be disposed in the ink flow path through which ink flows into the ink chamber and can be configured to adjust its volume to change the cross-sectional area of the ink flow path when the operating temperature of the thermal inkjet printhead, and thus the viscosity of the ink, changes.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: January 24, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Min-Soo Kim
  • Patent number: 8087294
    Abstract: When vibrations that may adversely affect the results of inspecting recording fluid discharge occur during the discharge inspection, properly discharging nozzles may be determined to be not functioning normally or faulty nozzles may be determined to be functioning normally. A vibration sensor is therefore used to detect vibrations in the inspection box during discharge inspection of a plurality of nozzles. Whether vibration adversely affecting inspection results was detected during the discharge inspection is then verified after discharge inspection is completed, and the cleaning process is applied to the faulty nozzles that need cleaning if such vibration was not detected. If such vibration was detected, the cleaning process is not executed and discharge inspection is repeated.
    Type: Grant
    Filed: November 21, 2008
    Date of Patent: January 3, 2012
    Assignee: Seiko Epson Corporation
    Inventor: Shinichi Yoshie
  • Patent number: 8083311
    Abstract: An object of this invention is to prevent prolongation of the time taken for a suction recovery operation while suppressing wasteful consumption of ink in the suction recovery operation. An ink-jet printing apparatus includes a plurality of caps which, when a plurality of nozzles of an ink-jet head are divided into a plurality of nozzle groups, are arranged one by one for the respective nozzle groups, and cap the respective nozzle groups, a suction pump which generates a negative pressure in the plurality of caps to suck ink from the plurality of nozzles, and is arranged commonly for the plurality of caps, and a control unit which controls the suction pump so as to make the negative pressure by the suction pump act on all the caps when a common negative pressure is generated in the plurality of caps, and make different negative pressures by the suction pump act sequentially on the plurality of caps when different negative pressures are generated in the respective caps.
    Type: Grant
    Filed: September 18, 2008
    Date of Patent: December 27, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventors: Daisaku Ide, Hirokazu Yoshikawa, Hitoshi Nishikori, Takeshi Yazawa, Atsuhiko Masuyama, Akiko Maru, Hideaki Takamiya, Hiroshi Tajika
  • Publication number: 20110310167
    Abstract: The invention prevents and suppresses wasteful expenditure of ink which occurs when recovering nozzles. In greater detail, a plurality of head units arranged in a direction which intersects a transportation direction of a printing medium is provided, a plurality of cleaning units is disposed to face the plurality of head units, and at least one of the plurality of cleaning units is selected and moved so as to be in close contact with the corresponding cleaning unit. By such a method, only the cleaning head unit which faces the head unit of which nozzles need to be recovered is selected and is brought into contact with the head unit, and liquid is sucked in from the nozzles of the head unit.
    Type: Application
    Filed: August 26, 2011
    Publication date: December 22, 2011
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Kaneo YODA, Hiroshi MIYAZAWA
  • Patent number: 8070253
    Abstract: An inkjet printer and a head cleaning method for an inkjet printer reduce the time required for head cleaning while also reducing needless ink consumption. The control unit 30 of the printer 1 confirms if a timer AID flag, impact detection flag, startup process flag, AID hold flag, or cover closed flag is set before executing the cleaning process a first time. If any one of the flags is set, the possibility that there are numerous defective nozzles in the printer 1 is high, and a stronger or more intense cleaning process (CL1 or CL2) is executed. Whether cleaning process CL1 or CL2 executes is determined according to the number of defective nozzles detected in the first nozzle check. If no flag is set, the weakest cleaning process (CL0) is executed.
    Type: Grant
    Filed: March 4, 2009
    Date of Patent: December 6, 2011
    Assignee: Seiko Epson Corporation
    Inventors: Kiyomi Kuroda, Hiroyuki Motoyama
  • Publication number: 20110292118
    Abstract: An inkjet recording apparatus includes a carriage configured to hold a recording head having a plurality of discharge ports from each of which ink is discharged, and to move in a first direction, and a platen configured to support a sheet moving downstream in a second direction intersecting with the first direction. The platen has a receiver configured to receive ink discharged towards an outside of the sheet, and a hole provided in an inside of the receiver to suction air therefrom. The hole is provided at a position at which an airflow is generated in a vicinity of a sheet edge so that each record band formed on a sheet with ink discharged from the plurality of discharge ports by movement of the carriage is expanded to at least one of an upstream side and a downstream side in the second direction.
    Type: Application
    Filed: May 18, 2011
    Publication date: December 1, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Itaru Wada
  • Patent number: 8068253
    Abstract: A recording apparatus having a buffer to store recording data associated with a recording area in a scanning direction of a recording head divided into a plurality of areas. The buffer stores the recording data in units of the divided areas. The recording apparatus includes a signal generation unit configured to output a signal according to a position of the recording head, a transfer data generation unit configured to generate transfer data transferred to the recording head based on the signal output from the signal generation unit, and a pattern data generation unit configured to generate predetermined pattern data. The transfer data generation unit includes a first input section for receiving the recording data read from the buffer and a second input section for receiving the pattern data generated by the pattern data generation unit.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: November 29, 2011
    Assignee: Canon Kabushiki Kaisha
    Inventor: Akihiko Hamamoto