Responsive To Thickness Of Record-medium Patents (Class 400/56)
  • Patent number: 10144233
    Abstract: A gap adjustment method of an ink jet device includes a head unit with an ink discharge port that discharges ink, a carriage that is provided with the head unit and moves in a main scanning direction, a print medium provided with a gap with respect to the ink discharge port, and a gap driving unit that adjusts a length of the gap. The gap adjustment method includes a discharging process (step ST4) and a gap adjusting process (step ST5 to step ST56). In the discharging process (step ST4), ink is discharged in each of a forward path and a backward path while reciprocating the carriage in the main scanning direction. In the gap adjusting process, a forward path landing position and a backward path landing position, and an optimum landing position determined in advance are compared, and the length of the gap is adjusted with the gap driving unit.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: December 4, 2018
    Assignee: MIMAKI ENGINEERING CO., LTD.
    Inventor: Akihiro Onodera
  • Patent number: 9931870
    Abstract: A printer can suppress paper lifting away from the platen surface even when conveying strong paper (regardless of paper strength) (a printer that can suppress paper uplift from the platen and is not easily affected by the type of paper). A printer 40 in which the platen surface 42a is on the inkjet head 21 side of a plane C through position A where paper 11 is held by a conveyance roller 36, and position B where the paper is held by a discharge roller, has: on the printhead 21 side of the plane C between the platen 42 and conveyance roller 36, at least one entry angle control unit 44 that contacts the paper 11 conveyed toward the platen surface 42a, and controls the entry angle of the paper 11 to the platen surface 42a; and on the printhead 21 side of the plane C between the platen 42 and the discharge roller 37, at least one exit angle control unit 46 that contacts the paper 11 conveyed in the direction away from the platen surface 42a, and controls the exit angle of the paper 11 from the platen surface 42a.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: April 3, 2018
    Assignee: Seiko Epson Corporation
    Inventors: Shuhei Kurotobi, Nobuhiro Inoue
  • Patent number: 9586426
    Abstract: An apparatus, method and non-transitory computer readable medium for printing on a profile of a printing medium having an irregular surface are disclosed. For example, the apparatus includes a print bar having one or more print heads, a shuttle, a loading carriage for holding the printing medium, wherein the loading carriage is coupled to the shuttle, a profile template coupled to the loading carriage via a cam follower and a controller coupled to the print bar and the shuttle, wherein the controller controls movement of the shuttle to cause the cam follower to move the loading carriage along a path that follows the profile of the printing medium and maintain a minimum print head gap during printing between the one or more print heads and the profile of the printing medium.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: March 7, 2017
    Assignee: Xerox Corporation
    Inventor: James Spence
  • Patent number: 9527320
    Abstract: A print head protection system is used in connection with an inkjet printer having a print head adapted for elevating, and a belt moving over a platen. A plurality of acoustic sensors is arrayed transversely to the process direction. The acoustic sensors measure a combined thickness of the belt, the platen, and the media sheet. An analyzer will detect if the media sheet is in contact with the media transport. An error signal is created when the thickness is below a predetermined value, indicating the media sheet is not in contact with the media transport. A mitigation control is operative to mitigate print head damage in response to the signal. Printing is halted in response to the signal to preclude damage to the print head. The sheet is discarded.
    Type: Grant
    Filed: April 23, 2015
    Date of Patent: December 27, 2016
    Assignee: Xerox Corporation
    Inventors: Timothy G. Shelhart, Aaron M. Moore, Samuel P. Sadtler, Donald R. Fess
  • Patent number: 9016463
    Abstract: A conveying device includes: opposed first and second rollers disposed to a first path; a roller holder supporting the second roller and movable between a first position where the second roller contacts the first roller and a second position where the second roller is spaced apart from the first roller; and opposed first and second guide members defining a second path merged with the first path. The first guide member is movable between a third position where the first guide member is spaced apart from the second guide member at a predetermined distance and a fourth position where their distance is less than the predetermined distance. The first guide member includes a guide portion for contacting and moving the roller holder from the first position to the second position in response to movement of the first guide member from the third position to the fourth position.
    Type: Grant
    Filed: May 29, 2014
    Date of Patent: April 28, 2015
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Masao Mimoto, Shota Iijima
  • Patent number: 8974020
    Abstract: A device for adjusting gap between platen and print head includes a base, a printing unit, a platen and a pair of adjusting elements. The printing unit is located on the base and includes a print head. The platen is located between the printing unit and the base, in which the platen has a platen-portion and a pair of adjusting-portions, the adjusting-portions are disposed at opposite sides of the platen-portion, and each of the adjusting-portions has a step-guiding-surface. The adjusting elements are disposed beside the platen and correspondingly contact the step-guiding-surfaces of the adjusting-portions, in which the distance between the platen and the print head is varied with positions of the adjusting elements relative to the step-guiding-surfaces.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: March 10, 2015
    Assignees: Kinpo Electronics, Inc., Cal-Comp Electronics & Communications Company Limited
    Inventor: Yu-Ting Chen
  • Patent number: 8960830
    Abstract: An inkjet printing head prints an image on a printing medium located at a printing position facing the printing head, by a printing operation in which the printing head ejects ink onto the printing medium, and the printing head is capable of resuming the printing operation after suspension of the printing operation. A supporting unit supports the printing medium on which the image is printed by the printing head, and an adjusting unit is capable of adjusting a facing distance between the printing head and the supporting unit. A control unit controls the adjusting unit so that the facing distance is greater than that during the printing of a printed image, in case the printing operation is resumed and the printed image moves relative to the printing position. The control unit controls the adjusting unit based on the time elapsed between the suspension of the printing operation and the resumption of the printing operation, so that the facing distance is greater as the elapsed time is longer.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: February 24, 2015
    Assignee: Canon Finetech, Inc.
    Inventor: Takeshi Miura
  • Patent number: 8646995
    Abstract: The present invention supplied an excellent printer which can print on a thick print medium without deformation of character. In the printer, a tension spring is respectively furnished on both ends of a carriage shaft which slidably supports a carriage carrying a print head, and pulls the carriage shaft upward; a carriage shaft gear is respectively fixed the both ends of the carriage shaft and engages with rack furnished on a side frame; the carriage shaft only moves up and down; and when a print medium P whose thickness is a predetermined thickness or over is fed, the carriage does not incline, but evenly moves upward through rotation of the carriage shaft gear.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: February 11, 2014
    Assignee: Oki Data Corporation
    Inventor: Koji Furuyama
  • Patent number: 8564795
    Abstract: Disclosed is a printer including a transverse tension sensor for detecting that a sheet being discharged has deviated in a paper width direction orthogonal to a discharging direction. The conveyance of the sheet is stopped based on a detection signal of the transverse tension sensor.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: October 22, 2013
    Assignee: NEC Infrontia Corporation
    Inventors: Shou Yazawa, Yukio Yoshioka
  • Patent number: 8491208
    Abstract: A printer includes a conveying path for conveying a printing medium therealong. The printer also includes a thickness detecting unit configured to detect change in thickness of the printing medium along the conveying direction, which is conveyed along the conveying path. The printer also includes a first print unit configured to print information on one surface of the printing medium whose thickness change is detected by the thickness detecting unit, and a second print unit configured to print information on another surface of the printing medium. The printer also includes a pressure mechanism configured to press the print head against the platen of each of the first and second print units, and a control unit configured to reduce pressure applied to the print head by the pressure mechanism if the thickness of the printing medium detected by the thickness detecting unit is greater than a predetermined threshold value.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: July 23, 2013
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventor: Kenji Eoka
  • Patent number: 8465147
    Abstract: An ink-jet recording apparatus includes a pair of first rollers which transports a recording medium in a transporting direction, a platen arranged at a downstream side of the transporting direction with respect to the first rollers, and which supports the recording medium, a pair of second rollers arranged at the downstream side of the transporting direction with respect to the platen, and which transports the recording medium in the transporting direction, a recording head arranged to face the platen and which jets ink droplets onto the recording medium supported by the platen, and a guide mechanism which changes an attitude of the guide member between a first attitude in which a front end of the recording medium is guided to a nipping position of the second rollers, and a second attitude in which the front end of the recording medium is guided to a lower position than the nipping position.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: June 18, 2013
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Naokazu Tanahashi
  • Patent number: 8449207
    Abstract: A printer device having a detachable thermal head, the thermal head being precisely positioned relative to a platen, whereby the printer device is capable of printing characters or the like, of a stable quality, on printing paper having different thickness'. A head module of the printer an attachment member detachably attached to a main frame; a movable support member movable relative to the attachment member; and a thermal head fixedly supported by the movable support member. The movable support member is connected to the attachment member via a plurality of head springs, and has a head positioning protruding portion configured to engage with a head positioning recess portion of the attachment member. The recess portion is formed as a groove which is generally straight, whereby the movable support member and the thermal head 44 may be straightly displaced relative to the attachment member only in the extending direction of the groove.
    Type: Grant
    Filed: December 12, 2008
    Date of Patent: May 28, 2013
    Assignee: Fujitsu Component Limited
    Inventors: Yoshinari Takabatake, Masafumi Chiba, Masahiro Tsuchiya, Yoichi Takamura, Yukihiro Mori, Kunihiko Funada
  • Patent number: 8348369
    Abstract: An image forming method includes discharging a droplet of a recording fluid via nozzles of a recording head onto a print medium; performing a main scan in which the print medium is scanned in a main scan direction; performing a sub-scan in which the print medium is scanned in a sub-scan direction; determining an overlap region in an image region that is formed by a single main scan; and performing an overlap control by forming an image in the overlap region through a plurality of main scans while the print medium is moved in the sub-scan direction by a feed amount L, wherein L=(n?x)d?md, where n is a number of the nozzles in the recording head; x is a number of the nozzles in the overlap region; d is a nozzle pitch; and m is a feed correcting coefficient (0<m<1).
    Type: Grant
    Filed: February 16, 2010
    Date of Patent: January 8, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Taku Satoh, Yasunobu Takagi, Masakazu Yoshida, Takashi Kimura
  • Patent number: 8287065
    Abstract: A recording apparatus includes: a recording head that performs recording on a recording target medium; a driving mechanism that is capable of causing the recording head to move closer to the recording target medium or move away from the recording target medium; and a controlling section that determines driving amount for one driving operation that is performed by the driving mechanism on the basis of results of a comparison made between a first recording head movement direction that is taken or to be taken in the one driving operation and a second recording head movement direction that was taken in another driving operation that is immediately before the one driving operation and thus precedes the one driving operation.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: October 16, 2012
    Assignee: Seiko Epson Corporation
    Inventors: Yoshiyuki Okazawa, Kazuhisa Nakamura
  • Patent number: 8186787
    Abstract: A method for printing information on a print medium, such as a mailpiece, that includes determining a thickness of the medium while it is being transported toward a print head, such as an ink jet print head, causing the distance between the top surface of the medium the print head when the medium is located below the print head to be within a specified range based on the determined thickness, and printing the information on the print medium. Also, an apparatus includes a printing station having a print head, a transport mechanism for transporting the medium toward the printing station, and a thickness measuring mechanism. The apparatus is structured to cause the distance between the top surface of the medium and a portion of the print head when the medium is located below the print head to be within a specified distance range based on the thickness of the medium.
    Type: Grant
    Filed: December 13, 2010
    Date of Patent: May 29, 2012
    Assignee: Pitney Bowes Inc.
    Inventors: Russell W. Holbrook, Daniel Vetter J. Williams
  • Patent number: 7918618
    Abstract: A printer assembly for printing on a supply of media traveling in a media direction. The printer generally includes a platen assembly, a print head assembly and a pivot member. The pivot member provides for pivoting of the print head assembly relative to the platen assembly to adjust for variations in the media as it passes therebetween. Advantageously, the pivot member may be supported directly by the platen assembly, such as by bearing supports of the platen assembly, to reduce positioning error from intervening components. Preferably, the pivot member is positioned upstream of the print head assembly. Also, a pair of pivot members may each be supported at the ends of an angulation arm which is coupled to the print head assembly for angulation in the media direction but is uncoupled in the cross-media direction.
    Type: Grant
    Filed: March 12, 2007
    Date of Patent: April 5, 2011
    Assignee: ZIH Corp.
    Inventors: Thomas Michael Zevin, Bob M. Brashear
  • Patent number: 7901150
    Abstract: A wide/super wide digital printer comprising a printer head box that reciprocates from left to right across a wide or super wide printing table having a length of up to 20 cm that is supported by a fixed support, and a feed roller and a guiding roller that are moveably coupled to the fixed support, wherein the wide/super wide digital printer is configurable as a roll to roll printer by lowering the feed roller and the guiding roller to a lowered configuration wherein uppermost parts of the feed roller and the guiding roller are below upper surface of printing table, or as a discontinuous sheet printer by raising the feed roller and the guiding roller to a raised configuration wherein the uppermost parts of the feed roller and the guiding roller are collinear with the upper surface of the printing table.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: March 8, 2011
    Assignee: Matan Digital Printers Ltd.
    Inventors: Boris Liberman, Gur Shapira
  • Patent number: 7811014
    Abstract: An image recording apparatus, including a carriage which is reciprocated in a reciprocating direction; a pair of guide frames which extend parallel to each other in the reciprocating direction and which cooperate with each other to guide a reciprocating movement of the carriage, wherein the two guide frames are separate from each other in a conveying direction in which a recording medium is conveyed and which is perpendicular to the reciprocating direction, and wherein the carriage includes a main frame which is supported by the two guide frames such that the main frame bridges the two guide frames, and additionally includes at least two sliding members each of which has a sliding surface which slides on a corresponding one of the two guide frames in the reciprocating direction; an image recording head which is mounted on the main frame of the carriage and which records an image on the recording medium; a driving device which reciprocates the carriage in the reciprocating direction; and a gap adjusting device
    Type: Grant
    Filed: November 27, 2006
    Date of Patent: October 12, 2010
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Shuichi Tamaki, Kenji Samoto
  • Patent number: 7798732
    Abstract: This disclosure discloses a printing apparatus comprising a feeding device that applies a driving force to feed a print-receiving medium; a print forming device that performs a print forming process on the print-receiving medium; a harmonization controlling portion that harmonizes and controlling a driving speed of the feeding device and the print forming process operation of the print forming device, based on an input of print information by using a predetermined harmonization correlation; and a harmonization changing portion that changes the harmonization correlation according to properties of the print-receiving medium or a bonding medium to be bonded thereto.
    Type: Grant
    Filed: July 25, 2008
    Date of Patent: September 21, 2010
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Satoru Moriyama, Koshiro Yamaguchi, Takamine Hokazono
  • Patent number: 7735991
    Abstract: A recording apparatus is advantageous in miniaturization even though a mechanism for adjusting a head gap is included. The recording apparatus includes a carriage for detachably holding a cartridge, a platen for supporting one surface of a recording medium, and a conveying roller and an eject roller for conveying the recording medium. The platen is constructed so that it is rockable with an axis of the eject roller as a rotation center and is switchable between at least two positions.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: June 15, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventor: Shinya Asano
  • Patent number: 7632029
    Abstract: Disclosed is a recording apparatus that can accurately detect the position of a recording member, such as thick paper or a CD-R, that is mounted on a tray, that can, as much as possible, protect to-be-detected portions from being scratched, and that can perform accurate printing using a simple structure. With a configuration wherein a recording member such as thick paper or a CD-R is mounted on a tray, and wherein the recording member is printed while the tray is conveyed, a reference position detection mark, which is a to-be-detected portion, is attached to the tray from the reverse face, and the edges of a reference position detection mark that has been detected are made as the edges of a hole portion that is formed in the tray.
    Type: Grant
    Filed: August 10, 2004
    Date of Patent: December 15, 2009
    Assignee: Canon Kabushiki Kaisha
    Inventor: Koichiro Kawaguchi
  • Patent number: 7611299
    Abstract: A thermal print head has a row of heating elements arranged in a printing position in which the heating elements row abuts against a platen via a paper guide path. The thermal print head is held so as to be displaceable in an adjusting direction substantially orthogonal to a rectilinear direction between the heating elements row and the platen. Positioning pins projecting from both sides of the thermal print head are fitted in positioning grooves so as to be movable in the adjusting direction The position of the positioning pins in the positioning grooves is displaced in the adjusting direction by displacement of movable pieces each adapted to project selectively from opposite sides of each of the positioning grooves, thereby making the position of the heating elements row adjustable in the adjusting direction.
    Type: Grant
    Filed: May 9, 2006
    Date of Patent: November 3, 2009
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Teruyuki Ochiai, Hiroyasu Ishii
  • Patent number: 7611239
    Abstract: An inkjet printer comprising: a body; a first gear assembly mounted to the body so as to cooperate with a motor gear for driving rotation of the first gear assembly, the first gear assembly having a code feature; and a second gear assembly mounted to the body so as to cooperate with the first gear assembly to be rotatable therewith, the second gear assembly, in use, cooperating with a capper for capping a printhead so that the rotation of the second gear assembly moves the capper out of and into its capping position, wherein the code feature of the first gear assembly is arranged to cooperate with a holding feature of a mounting arrangement used to mount the second gear assembly to the body, the code feature being configured so that the cooperation with the holding feature maintains the first gear assembly at a predetermined position during the mounting of the second gear assembly.
    Type: Grant
    Filed: December 5, 2005
    Date of Patent: November 3, 2009
    Assignee: Silverbrook Research Pty Ltd
    Inventors: Kia Silverbrook, Tobin Allen King, Gregory Michael Tow, Attila Bertok, Geoffrey Philip Dyer, Robert John Brice, Paul Ian Mackey, Christopher Hibbard
  • Patent number: 7585123
    Abstract: At a predetermined position during the lateral movement of a carriage 10, a gap switching mechanism 30 for switching a gap between a recording head 15 and a recording medium is provided. The recording head 15 is mounted facing downward on the carriage 10. A part close to one side on a lower end of the carriage is slidably and pivotably supported by a guide shaft 11 of a round shaft shape. A switching block member 13 provided with several abutment portions 52 and 53 with different heights, which are positioned so as to be opposed to a slide portion 12a at an upper end of a frame 12 extending in a vertical direction along a back of the carriage. The A switching block member 13 is pivotably supported by the carriage. A first pushing portion 56 is located at a left end of the frame so as to abut against the switching block member 13.
    Type: Grant
    Filed: April 26, 2004
    Date of Patent: September 8, 2009
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kiyoshi Ueda, Yukio Shiohara, Hiroaki Yazawa, Kenji Samoto, Shunji Murai, Masatoshi Yamada
  • Patent number: 7475979
    Abstract: A dynamic registration device for a mailing system that reduces the problems of dust generation, ink smearing, and print head contact is provided. The biasing force normally applied to the back panel of a mail piece, such that the front panel maintains contact with a registration plate, is controlled by an actuator such that the force can be removed when the printing module is not performing the actual printing process. Thus, the biasing force can be applied only when the print head is actually printing and the biasing force can be removed once printing has been completed. In other embodiments utilizing multiple printing modules, when one of the printing modules is inactivated, the biasing force can be removed, and the mail pieces pass through the inactive printing module without being registered against the top registration plate.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: January 13, 2009
    Assignee: Pitney Bowes Inc.
    Inventors: John P. Miller, Lun Chan, Anthony E. Yap
  • Patent number: 7448727
    Abstract: The invention provides an ink jet recording head in which an element substrate provided in a head unit and constituted of plural drive elements is driven to discharge ink droplets from plural nozzles. In the ink jet recording head, the head unit has a substantially parallelogram shape, and plural head units are connected in a row to form a head bar.
    Type: Grant
    Filed: February 2, 2005
    Date of Patent: November 11, 2008
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yoshihira Rai, Shinji Seto
  • Publication number: 20080240825
    Abstract: The present invention supplied an excellent printer which can print on a thick print medium without deformation of character. In the printer, a tension spring is respectively furnished on both ends of a carriage shaft which slidably supports a carriage carrying a print head, and pulls the carriage shaft upward; a carriage shaft gear is respectively fixed the both ends of the carriage shaft and engages with rack furnished on a side frame; the carriage shaft only moves up and down; and when a print medium P whose thickness is a predetermined thickness or over is fed, the carriage does not incline, but evenly moves upward through rotation of the carriage shaft gear.
    Type: Application
    Filed: February 29, 2008
    Publication date: October 2, 2008
    Applicant: Oki Data Corporation
    Inventor: Koji FURUYAMA
  • Publication number: 20080170899
    Abstract: A signal output apparatus comprises an impact applying unit applying an impact to a sheet from the outside thereof, and a detection unit outputting a signal by the impact. An apparatus for determining the type of sheet comprises an impact applying unit applying an impact to a sheet from the outside thereof, and a detection unit outputting a signal by the impact, wherein the type of the sheet is determined based on the signal from the detection unit. An image forming apparatus comprises an impact applying unit applying an impact to a sheet from the outside thereof, and a detection unit outputting a signal by the impact. A method for determining the type of sheet comprises the steps of applying an impact to a sheet from the outside thereof, outputting a signal from a detection unit by the applying step, and determining the type of sheet based on the signal. An apparatus carries out the method for determining the type of sheet.
    Type: Application
    Filed: March 17, 2008
    Publication date: July 17, 2008
    Applicant: Canon Kabushiki Kaisha
    Inventors: Hidetoshi Nojiri, Masatake Akaike, Norio Kaneko, Takehiko Kawasaki, Koichiro Nakanishi, Naoyo Gemma, Toshitsugu Morimoto
  • Patent number: 7331728
    Abstract: A printer includes a print head for printing on a print medium and a platen which supports the print medium, and is located opposite to the print head. The print head is linearly moved along the print medium. The platen includes first and second end portions and an intermediate portion, and is formed of material having stiffness. The first and second end portions are located at respective ends of the platen in the moving direction of the print head, and the intermediate portion is located between the first and second end portions. The first and second end portions are supported by respective spring members, such that they can be elastically displaced in a direction toward or away from the print head. The intermediate portion is formed to be more easily warped than the first and second end portions.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: February 19, 2008
    Assignee: Toshiba Tec Kabushiki Kaisha
    Inventors: Tsuyoshi Sanada, Kiyotaka Nihashi
  • Patent number: 7290949
    Abstract: Methods for setting the print gap in a printer are disclosed. The printer has an eccentric platen wherein rotation of the platen changes the print gap distance. A driver controls the eccentric platen rotation, and a sensor may be used to determine the position of the motor and platen. The configuration of an eccentric platen and a driver having a position sensor enables measuring the thickness of a form at one or more locations to create a representative thickness profile of the form, which may be saved to the printer's computer memory and repeated when printing similar forms in the future, thus obviating the need to measure the thickness of every individual form.
    Type: Grant
    Filed: October 12, 2005
    Date of Patent: November 6, 2007
    Assignee: TallyGenicom LP
    Inventors: Scott D Phillips, Joel C Brown, Craig J Cornelius, Kenneth R Hallock, Daniel A Durland, Gary A Gesellchen, Christopher J Bakken
  • Patent number: 7284918
    Abstract: A recording method, for example, which allows a recording medium to be carried with high carrying precision is to be achieved. A recording method includes a step of changing a carry command value, when carrying a recording medium, according to a state of bending of the recording medium that is carried, a step of carrying the recording medium based on the carry command value that has been changed, and a step of recording on the recording medium that has been carried.
    Type: Grant
    Filed: July 29, 2003
    Date of Patent: October 23, 2007
    Assignee: Seiko Epson Corporation
    Inventor: Hirokazu Nunokawa
  • Patent number: 7281870
    Abstract: An ink jet recording apparatus includes a carriage for reciprocal movement while carrying a recording head for effecting recording by ejecting ink; a platen for supporting recording material at a position opposed to the recording head; a changing member for changing a distance between the recording head and the platen; a detecting member, provided on the carriage, for detecting recording positional deviation by reading a pattern recorded on a recording material by the recording head; a member to be detected that is movable with an operation of the changing member; and a discriminating unit for discriminating a distance between the recording head and the platen by detecting a state of the member to be detected by the detecting member.
    Type: Grant
    Filed: June 8, 2005
    Date of Patent: October 16, 2007
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kota Uchida
  • Patent number: 7220070
    Abstract: A printer having a main printer unit 1 an image recording unit 3 and a base unit 2. The image recording unit 3 includes a carriage 25 having an ink head for discharging ink to paper and a guide shaft 26 for slidably guiding the carriage 25. The base unit 2 is disposed opposite the image recording unit 3 and supports the image recording unit 3.
    Type: Grant
    Filed: September 26, 2005
    Date of Patent: May 22, 2007
    Assignee: Seiko Epson Corporation
    Inventors: Hiroshi Narita, Yoshiki Kinoshita
  • Patent number: 7213986
    Abstract: A printer apparatus for printing data on paper traveling through the printer apparatus in a paper conveying direction. The printer apparatus includes a paper conveying portion including a driving roller and a driven roller, the driving roller and driven roller being moveable with respect to one another between an engaged position at which the driving roller and the driven roller are pressed together and a disengaged position at which the driving roller and the driven roller are separated; wherein the paper conveying portion is situated downstream, with respect to the paper conveying direction, from the location at which the data is printed on the paper; and wherein the driving roller and the driven roller are operative to pressingly sandwich the paper therebetween when the driving roller and the driven roller are in the engaged position.
    Type: Grant
    Filed: April 21, 2004
    Date of Patent: May 8, 2007
    Assignee: Fujitsu Component Limited
    Inventors: Sumio Watanabe, Fumio Sakurai, Yukihiro Mori, Kunihiko Funada
  • Patent number: 7210866
    Abstract: A printer is provided comprising an elongate printhead for printing across the pagewidth of print media, a rotatable, elongate platen arranged to support the print media being printed on by the printhead, a sensor for sensing a thickness of the print media, and a controller arranged to rotate the platen. The platen can support the print media at a plurality of predetermined distances from the printhead with the rotation of the platen providing selection of the plurality of predetermined distances. The controller rotates the platen in response to the sensed print media thickness so as to select a predetermined distance of the plurality of predetermined distances which accommodates the print media.
    Type: Grant
    Filed: January 11, 2006
    Date of Patent: May 1, 2007
    Assignee: Silverbrook Research Pty Ltd
    Inventor: Kia Silverbrook
  • Patent number: 7096643
    Abstract: A mail-handling machine including a postage-metering or “franking” module including at least a print mechanism for printing a postage imprint on a mail item and a conveyor for conveying the mail item along a mail item conveyor path defined by top and bottom guide plates. The conveyor includes at least a mail item engagement mechanism including a bottom plate mounted to move vertically at the inlet of the franking module. A support supports the mail items at the inlet of the franking module. The support is moveable in a manner synchronized with the vertical movement of the bottom engagement means.
    Type: Grant
    Filed: August 5, 2002
    Date of Patent: August 29, 2006
    Assignee: Neopost Industrie
    Inventor: Stephane Le Gallo
  • Patent number: 7083245
    Abstract: A reliable detection of optically detecting the type of recording media is achieved. A part of a support member for supporting an optical sensor is pushed against the surface of a sheet by a spring so as to maintain the gap between the sensor and the sheet surface. With this arrangement, a recording apparatus which is free from wrong detection is achieved regardless of a gap-varying factor, that is, the remaining amount of sheets. Also, by arranging a part of a light-shielding hood so as to abut against the sheet, wrong detection due to disturbance light can be prevented.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: August 1, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kosuke Yamamoto
  • Patent number: 7063468
    Abstract: Provided is an ink-jet printer comprising a carriage, which is rotatably installed on a guide shaft and includes a stacking portion on which an ink cartridge is stacked, and a balancing portion installed on a side opposite to the stacking portion, so as to move in a straight reciprocating motion along the guide shaft; and a head gap adjusting apparatus, which is rotatably installed in the balancing portion and adjusts a head gap by rotating the carriage centering on the guide shaft according to a thickness of a printing medium.
    Type: Grant
    Filed: March 10, 2004
    Date of Patent: June 20, 2006
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Karp-sik Youn, Jin-ho Park
  • Patent number: 7059697
    Abstract: The present invention provides an ink jet printing apparatus of a low-cost and simple construction which can detect with high reliability a gap between a print medium and a print head mounted on a carriage. The ink jet printing apparatus, which reciprocally moves in a predetermined scan direction the carriage holding the print head for ejecting ink onto the print medium, includes a gap changing mechanism for changing the gap between the print head held in the carriage and the print medium and a control unit for controlling a driving of the gap changing mechanism and a reciprocal movement of the carriage, wherein the control unit drives the gap changing mechanism and reciprocally moves the carriage to check the operation state of the gap changing mechanism.
    Type: Grant
    Filed: May 17, 2005
    Date of Patent: June 13, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Seiji Takahashi, Yasuhiko Ikeda, Hiroyuki Niimura, Kota Uchida
  • Patent number: 7044570
    Abstract: The present invention provides an ink jet printing apparatus of a low-cost and simple construction which can detect with high reliability a gap between a print medium and a print head mounted on a carriage. The ink jet printing apparatus, which reciprocally moves in a predetermined scan direction the carriage holding the print head for ejecting ink onto the print medium, includes a gap changing mechanism for changing the gap between the print head held in the carriage and the print medium and a control unit for controlling a driving of the gap changing mechanism and a reciprocal movement of the carriage, wherein the control unit drives the gap changing mechanism and reciprocally moves the carriage to check the operation state of the gap changing mechanism.
    Type: Grant
    Filed: August 28, 2003
    Date of Patent: May 16, 2006
    Assignee: Canon Kabushiki Kaisha
    Inventors: Seiji Takahashi, Yasuhiko Ikeda, Hiroyuki Niimura, Kota Uchida
  • Patent number: 7040819
    Abstract: In a platen gap adjustment device, a stable area detection device for a platen gap formed between ahead and an upper surface of a platen, wherein the carriage guide shaft is moved relatively to the platen so that the platen gap is adjusted by driving the drive motor to rotate the gap adjuster cam, the gap adjuster cam is configured so as to provide a plurality of stable areas and a plurality transition areas; and wherein a stable area detection sensor is provided so as to face to a rotational member which rotates synchronously with the gap adjuster cam, and a detection object in correspondence with the stable areas of the platen gap is provided on the rotational member.
    Type: Grant
    Filed: April 2, 2004
    Date of Patent: May 9, 2006
    Assignee: Seiko Epson Corporation
    Inventors: Sanshiro Takeshita, Kazuhiko Yamaguchi, Hiroyuki Sugimoto
  • Patent number: 7004652
    Abstract: A pagewidth drop on demand printer includes a printhead having an array of fixed printing nozzles thereon. A platen having a platen surface upon which a sheet rides to receive ink from the printing nozzles is situated alongside the nozzles. A sensor is provided to measure an offset of the print surface of the sheet with respect to the printing nozzles and means is provided effecting movement of the platen to alter the offset. This is typically done by making a compensatory rotation of the platen.
    Type: Grant
    Filed: May 26, 2004
    Date of Patent: February 28, 2006
    Assignee: Silverbrook Research Pty Ltd
    Inventor: Kia Silverbrook
  • Patent number: 6997623
    Abstract: A printer unit comprises a first positioning mechanism and a second positioning mechanism for positioning a platen with respect to a print head when a cover frame is closed. The first positioning mechanism is constituted to restrict a change in the position of the platen to a rotation around a first positioning fulcrum, such as a lock pin. The second positioning mechanism is constituted to restrict the rotation of the platen around a first positioning fulcrum by abutment on a second positioning fulcrum, such as a lock lever spindle.
    Type: Grant
    Filed: August 6, 2004
    Date of Patent: February 14, 2006
    Assignee: Seiko Epson Corporation
    Inventor: Mitsuhiko Nebashi
  • Patent number: 6966711
    Abstract: A dynamic registration device for a mailing system that reduces the problems of dust generation, ink smearing, and print head contact is provided. The biasing force normally applied to the back panel of a mail piece, such that the front panel maintains contact with a registration plate, is controlled by an actuator such that the force can be removed when the printing module is not performing the actual printing process. Thus, the biasing force can be applied only when the print head is actually printing and the biasing force can be removed once printing has been completed. In other embodiments utilizing multiple printing modules, when one of the printing modules is inactivated, the biasing force can be removed, and the mail pieces pass through the inactive printing module without being registered against the top registration plate.
    Type: Grant
    Filed: December 18, 2003
    Date of Patent: November 22, 2005
    Assignee: Pitney Bowes Inc.
    Inventors: John P. Miller, Lun Chan, Anthony E. Yap
  • Patent number: 6921217
    Abstract: The present invention provides a gap adjusting device that allows gap adjustment with a small torque and also allows more gap positions to be set. The gap adjusting device rotates bushing members so as to change level (PG) of carriage guide shafts for guiding a carriage. An intermediate gear that engages with the bushing members has a boss to be inserted into a cam groove formed in a slidable member that can slide. In accordance with a sliding operation of the slidable member 51, PG is changed. The weights of the carriage and the carriage guide shafts are transmitted to the boss via the bushing members and the intermediate gear and therefore the boss is pushed against a sidewall of the cam groove to be in contact with the sidewall, thereby PG is maintained. Therefore, the slidable member 51 can be caused to slide with a small torque.
    Type: Grant
    Filed: May 7, 2004
    Date of Patent: July 26, 2005
    Assignee: Seiko Epson Corporation
    Inventor: Keishiro Tsuji
  • Patent number: 6903358
    Abstract: Embodiments of the present invention relate to an apparatus (i.e. an automatic teller machine) comprising an optical sensor. The optical sensor is configured to detect thickness of paper. Advantages of some embodiments of the present invention are that by determining a thickness of paper, it can be confirmed that two pieces of paper are not stuck together. For example, if two substantially identical pieces of paper are stuck together, then their thickness will be approximately twice the thickness of a single sheet. Accordingly, upon detection of two or more sheets of paper stuck together, a device, that automatically handles paper, may cause the sheets of paper to be separated.
    Type: Grant
    Filed: December 17, 2002
    Date of Patent: June 7, 2005
    Assignee: LG N-Sys Inc.
    Inventor: Kyung-Hoon Kim
  • Patent number: 6886897
    Abstract: A head gap adjusting apparatus used with an ink-jet printer, in which there are provided a pair of carrier shaft lifting parts disposed upon a chassis to adjust the head gap between a paper and a print head by converting a force of horizontal motion to a force of vertical motion and transmit the converted force to a carrier shaft. Each of the carrier shaft lifting parts includes the following elements. A vertical opening is formed in the chassis to guide the end of the carrier shaft to be movable up and down. An elastic supporting member elastically supporting the carrier shaft within the vertical opening to prevent the carrier shaft from being freely moved during movements of the carrier for carrying out a printing. A horizontal moving device is for enabling an end of the carrier shaft to move up and down within the vertical opening against the elastic forces of the elastic supporting member during the horizontal movements thereof.
    Type: Grant
    Filed: June 4, 2003
    Date of Patent: May 3, 2005
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yong-myoun Park
  • Patent number: 6883979
    Abstract: The serial printer includes a carriage reciprocating in a main scanning direction, a reading sensor mounted in carriage, a timing fence arranged in the main scanning direction, a mechanism preventing movement of carriage in the main scanning direction, and a controlling portion detecting a set condition for image formation in accordance with read data of timing fence from reading sensor for controlling image formation. The controlling portion detects the set condition for image formation in accordance with the read data obtained from the timing fence, so that detection of the set condition for image formation is enabled without increasing the size of an apparatus and cost, or without decreasing a processing efficiency in image formation.
    Type: Grant
    Filed: May 20, 2002
    Date of Patent: April 26, 2005
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Atsushi Ueda, Hirotoshi Iemura, Hajime Horinaka, Masaharu Kimura, Norihiro Ochi, Shunichi Hayashiyama
  • Patent number: 6871042
    Abstract: A sheet-thickness detector device has a sheet guide with a sheet-guide surface for guiding a sheet between a magnetic field sensor and a magnetic guide element. The magnetic field sensor, having an approach-guide plane disposed upstream in a sheet conveying direction for guiding the sheet to a detection surface, comes into direct contact with the sheet. By the structure mentioned above, the thickness of a sheet is detected so as to determine sheet double feeding and the like without producing sheet jamming.
    Type: Grant
    Filed: June 18, 2003
    Date of Patent: March 22, 2005
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masaharu Nemura, Norifumi Miyake, Takayuki Fujii, Tsuyoshi Moriyama, Yuzo Matsumoto, Yusuke Obuchi, Kouji Shimizu
  • Patent number: 6816281
    Abstract: A printing device is described, predominantly for printing labels on a tape. The printing device has a display and input means for inputting characters to be printed by the printing device. Using the input means, a cursor on the display can be controlled. The printing device has a label memory which comprises a storage portion having a plurality of storage sections. The display is operable to display a plurality of label access elements each of which represents a respective storage section in the storage portion of the memory. The cursor is used to access a selected storage section of the memory associated with the label access element identified by the cursor position. A method of storage label data in a label memory using this principle is also described.
    Type: Grant
    Filed: July 28, 2000
    Date of Patent: November 9, 2004
    Assignee: Esselte
    Inventors: Clive Lawrence Ayling, Michel Woodman, David Roger Tegerdine, Geoffrey Stuart Howe