Pneumatic Patents (Class 271/90)
  • Publication number: 20110084439
    Abstract: An edge alignment control apparatus for correcting vertical alignment of sheet members is disclosed to include two base units each having multiple first power drives controllable to reciprocate a respective horizontal reciprocating member, and adjustment units arranged between the base units, each adjustment unit having two holder blocks connected to the horizontal reciprocating members of the base units at one same elevation and movable by the respective horizontal reciprocating members horizontally, sheet-transfer rollers pivotally connected between the holder blocks, a bearing board connected between the holder blocks for receiving a sheet member from the sheet-transfer rollers and a suction hood suspending above the bearing board and defining with the bearing board a passage for the passing of a sheet member and controllable to suck up a sheet member from the bearing board for allowing adjustment of the position of the sheet member horizontally subject to the operation of the first power drive.
    Type: Application
    Filed: October 14, 2009
    Publication date: April 14, 2011
    Inventor: Tze-Che LIN
  • Publication number: 20110031679
    Abstract: An upper limit detection sensor detects that a top face position of a sheet stack on a tray reaches an upper limit position which enables feeding of sheets one by one by a sheet feeding portion and a lower limit detection sensor detects that the top face position of the sheet stack on the tray reaches a lower limit position which enable feeding of sheets one by one. When the sheet stack is loosened by blowing air against a side face of the sheet stack on the tray with an air spouting nozzle provided on an air loosening device, if a sheet floated by air from the air loosening device exceeds an upper limit position of a feeding enabled range, the lowering amount of the tray is controlled so that at least a sheet next to the sheet to be fed is not lower than a lower end position of the air spouting port of the air loosening device.
    Type: Application
    Filed: September 28, 2010
    Publication date: February 10, 2011
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: TAKASHI FUJITA
  • Patent number: 7883084
    Abstract: A sheet feeding device for feeding a sheet-form recording medium includes: a sheet accommodating portion for accommodating a sheet stack constituted by a plurality of sheets of the sheet-form recording medium; and a first warm air unit having a first blowing port for blowing warm air toward an upper face of the sheet stack accommodated in the sheet accommodating portion. The sheet feeding device preferably further includes a second warm air unit having a second blowing port for blowing warm air onto a side face of the sheet stack that is parallel to a sheet feeding direction.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: February 8, 2011
    Assignee: Kyocera Mita Corporation
    Inventors: Keiji Okumura, Yoshihiro Yamaguchi, Yoshio Sugishima, Sachio Izumichi
  • Patent number: 7866656
    Abstract: The present invention provides a method and apparatus separating a media combination from a stack of interleaved slip-sheets and printing plates and relates to image recording systems such as, for example, computer-to-plate (CTP) systems. Image recording systems include imaging systems that image an image recordable material in response to imaging information. Image recordable materials can include, for example, printing plates. Image recording systems can include integrated systems that additionally process the image forming materials. Additional processing can include, but is not limited to materials punching, materials bending, exposure to non-imaging radiation, chemical development and materials drying. The present invention relates to a materials handling system that separates a media combination from a media stack that includes image recordable materials. A slip-sheet separates each of the image recordable materials from one another in the media stack.
    Type: Grant
    Filed: July 6, 2009
    Date of Patent: January 11, 2011
    Assignee: Eastman Kodak Company
    Inventors: William Yuen, Martin C. Wight
  • Publication number: 20100298971
    Abstract: A method and apparatus for feeding sheets of media from a media stack in an image production device is disclosed. The method may include fluffing a stack of media with a predetermined amount of air flow, sensing a number of fluffed media sheets in the media stack, determining if the number of fluffed media sheets equals or exceeds a predetermined value, wherein if it is determined that the number of fluffed media sheets equals or exceeds the predetermined value, feeding the fluffed media sheets to an image production section of the image production device.
    Type: Application
    Filed: August 5, 2010
    Publication date: November 25, 2010
    Applicant: XEROX CORPORATION
    Inventors: Robert Alan Clark, Zhigang Fan
  • Publication number: 20100187747
    Abstract: A sheet feeding apparatus includes a sheet stacking unit, a suction conveyance unit configured to convey an uppermost sheet stacked on the sheet stacking unit, a suction unit configured to adsorb the sheets onto the suction conveyance unit, and an adsorption completion detection unit. In the sheet feeding apparatus, when the tab-attached sheets are stacked on the sheet stacking unit and fed such that their tab portions are on the downstream side in a sheet feeding direction, the suction unit starts to adsorb the sheet in response to a sheet feeding signal, and the suction conveyance unit starts to convey the sheet immediately after the adsorption completion detection unit detects the completion of the adsorption. When the sheets other than the tab-attached sheets are fed, the suction unit previously adsorbs the sheet onto the suction conveyance unit, and the suction conveyance unit starts to convey the sheet in response to the sheet feeding signal.
    Type: Application
    Filed: January 28, 2010
    Publication date: July 29, 2010
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Isao Kannari, Taro Ikeda, Takashi Uno, Yuji Yamanaka, Yuuya Yokobori
  • Publication number: 20100181717
    Abstract: A sheet-conveying device designed to feed a sheet fed thereto through a fixing device toward a discharge unit includes first and second conveyance guides facing each other so as to define a sheet conveyance path and each having a conveying member designed to feed the sheet. The first conveyance guide includes a blower opening facing the sheet conveyance path for blowing air onto the sheet conveyance path, an exhaust opening provided on a downstream side in a sheet feeding direction with respect to the blower opening for removing air that has been blown onto the sheet conveyance path and discharging it outside the device.
    Type: Application
    Filed: November 10, 2009
    Publication date: July 22, 2010
    Applicant: KYOCERA MITA CORPORATION
    Inventor: Noriaki Sumikura
  • Patent number: 7740240
    Abstract: In a paper feeding apparatus, a paper feeding unit has a paper mounting surface provided with an air-blowing outlet. The paper feeding structure feeds an uppermost sheet of a stack of paper on the paper mounting surface. An air pump supplies air to an air-blowing outlet, a first air-blowing member and a second air-blowing member. The air-blowing outlet is so provided as to blow air to an approximately whole undersurface of the paper stacked on the paper mounting surface. When air is being supplied to the air-blowing outlet, an electronic control unit inhibits the feeding of sheets of paper by the paper feeding unit.
    Type: Grant
    Filed: June 15, 2007
    Date of Patent: June 22, 2010
    Assignee: Duplo Corporation
    Inventor: Shinichi Iwakiri
  • Patent number: 7700895
    Abstract: A sheet feeding apparatus including a stacking portion for stacking a plurality of sheets thereon, a sheet feeding portion for feeding the sheets stacked on the stacking portion, a fan for sending air to the sheets to loosen the sheets stacked on the stacking portion, a heater for warming the air sent by the fan, a temperature detecting portion for detecting the temperature of the heater, and a control portion for starting the driving of the fan in conformity with the temperature detecting portion having detected a predetermined temperature after temperature control for adjusting the heater to a target temperature has been started.
    Type: Grant
    Filed: May 25, 2007
    Date of Patent: April 20, 2010
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shunichi Komatsu, Kunio Tsuruno, Yuzo Matsumoto, Yasuo Fukatsu
  • Publication number: 20100066007
    Abstract: A method and an apparatus for conveying and aligning sheets being fed to a processing machine, include conveying a sheet which has been separated from an overlapping stream back into the overlapping stream in the case of a machine “stop,” wherein a rear sheet edge is raised by a mechanical or pneumatic device.
    Type: Application
    Filed: September 14, 2009
    Publication date: March 18, 2010
    Applicant: HEIDELBERGER DRUCKMASCHINEN AG
    Inventors: ANDREAS MÜLLER, BURKHARD WOLF
  • Patent number: 7665727
    Abstract: A system, method, and process of for packaging liquid product into cartons using an automated packaging system and more specifically methods of enclosing the packaging system and routing conditioned air over the cartons is presented. More specifically, a carton magazine assembly for collecting plastic coated paper carton blanks prior to sanitization, assembly, filling, and sealing includes a magazine cover that can be opened to insert additional carton blanks into the packaging system as necessary. The magazine cover has an integrated air manifold that directs pressurized conditioned air over the carton blanks towards suction ports. The suction ports collect the air with potential contaminants and the filters the air prior to ejecting it away from the vicinity of the packaging system.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: February 23, 2010
    Assignee: Evergreen Packaging Inc.
    Inventors: Gerald Paul Berger, Cletus Emerich Kreher, Yasushi Sasaki, Toshiyuki Kanemaru
  • Patent number: 7661672
    Abstract: A film handling system is described, including: a supply container for supporting a plurality of sheets of film; a film receiver; and a transport mechanism for retrieving a sheet of film from the supply container and transporting the sheet of film to the receiving mechanism, said transport mechanism comprising a vacuum head for adhering the sheet of film to the vacuum head; wherein the film receiver comprises a feed mechanism for conveying the sheet of film received by the film receiver, said feed mechanism including a sprocket for mating with at least one of a plurality of sprocket holes in the sheet of film transported by the transport mechanism.
    Type: Grant
    Filed: April 28, 2006
    Date of Patent: February 16, 2010
    Inventor: Michael Tenbrock
  • Publication number: 20100032892
    Abstract: A method and apparatus for fluff management in an image production device is disclosed. The method may include fluffing a stack of media with a predetermined amount of air flow, sensing sheet separation in the media stack, determining if the sheet separation meets predetermined criteria, wherein if the sheet separation does not meet the predetermined criteria, adjusting the air flow used for fluffing the media stack.
    Type: Application
    Filed: August 7, 2008
    Publication date: February 11, 2010
    Applicant: XEROX CORPORATION
    Inventors: Robert Alan CLARK, Lloyd Williams
  • Patent number: 7637492
    Abstract: An apparatus and a method are provided for separating first and second flat objects from a stack in which the flat objects are provided substantially in pairs and differ from one another in terms of weight per unit area and/or flexibility. The apparatus includes at least one suction element for attracting the objects by suction, a drive apparatus for moving the suction element, and a control apparatus for controlling the drive apparatus. The control apparatus drives the drive apparatus such that the suction element is moved to a first position, in which the first object that has a lower weight per unit area and/or a greater flexibility than the second object is attracted by the suction of the suction element. The first position is at a minimum distance from a stack surface.
    Type: Grant
    Filed: April 2, 2008
    Date of Patent: December 29, 2009
    Assignee: Heidelberger Druckmaschinen AG
    Inventor: Wolfgang Brügge
  • Patent number: 7604231
    Abstract: The present invention provides a method and apparatus for separating a media combination from a stack of interleaved slip-sheets and printing plates. A media combination is separated from a media stack, including image recordable materials and a slip-sheet, is separated. The media combination is gripped and flexed in a direction, and then flexed in a second direction.
    Type: Grant
    Filed: January 30, 2007
    Date of Patent: October 20, 2009
    Assignee: Eastman Kodak Company
    Inventors: William Yuen, Martin C. Wight
  • Publication number: 20090194933
    Abstract: A printer for sheets of porous media supplied from a stack of such sheets. The printer has a printhead, a sheet pick-up assembly having a conduit connected to a reversible air supply, the conduit having an outlet directed towards a top sheet of the stack for directing an airstream onto the top sheet such that air penetrates the top sheet and generates an air cushion lifting the top sheet from a second sheet, the reversible air supply configured to suck air into the outlet after the top sheet has lifted from the second sheet to hold the top sheet against the outlet and a sheet feed mechanism for displacing the conduit to draw the top sheet away from the stack.
    Type: Application
    Filed: April 14, 2009
    Publication date: August 6, 2009
    Inventor: David William Jensen
  • Publication number: 20090190979
    Abstract: A transfer material separating device includes a transfer material moving member (intermediate transfer belt) adapted to move with a transfer material held in contact with and pressed against it so as to have a liquid developer image transferred onto the transfer material and a transfer material separation/suction section (a suction wheel, a suction wheel support lever, a cam and a spring) for sucking the transfer material moving with the transfer material moving member at the surface opposite to the image transfer surface thereof and separating the transfer material from the transfer material moving member.
    Type: Application
    Filed: January 26, 2009
    Publication date: July 30, 2009
    Applicant: SEIKO EPSON CORPORATION
    Inventor: Shinichi TANAKA
  • Patent number: 7562868
    Abstract: A media supply system (40) suitable for use in an imaging apparatus (30) to remove sheets of imaging media from a stack of one or more sheets of imaging media. Media supply system (40) includes a pickup assembly (50) and an actuator system (52). Pickup assembly (50) is moveable between at least a first position and a second position, wherein at least a portion of the pickup assembly is configured to selectively engage a first sheet of imaging media of the stack when the pickup assembly is in the first position. Actuator system (52) is selectively coupled to pickup assembly (50) and is configured to move pickup assembly (50) between at least the first position and the second position and to vibrate at least the portion of the pickup assembly engaging the first sheet of imaging media at a desired frequency after moving the pickup assembly from the first position, wherein the desired frequency is based on characteristics of the sheets of imaging media.
    Type: Grant
    Filed: August 3, 2005
    Date of Patent: July 21, 2009
    Assignee: Carestream Health, Inc.
    Inventor: Troy A. Giese
  • Patent number: 7552919
    Abstract: A feeder head assembly is provided for transporting a material in a printing apparatus. The feeder head assembly includes a housing and a cap. The housing is at least partially rotatable about a longitudinal axis. Also, the housing includes an inner hollow chamber and an opening into the chamber. The inner hollow chamber is adapted to be in fluid communication with a vacuum source for decreasing pressure within the chamber. The opening is defined by a rim. The cap is removeably secured to at least a portion of the rim. The cap includes at least one aperture passing therethrough, wherein the at least one aperture is in fluid communication with the vacuum source.
    Type: Grant
    Filed: August 21, 2006
    Date of Patent: June 30, 2009
    Assignee: Halm Industries Co., Inc.
    Inventor: Mario Lisena
  • Patent number: 7527257
    Abstract: A method for lifting individual flat objects from a stack of objects includes providing at least two suction elements spaced apart from one another for lifting a respective object, alternately lifting the respective objects with the suction elements, and either forcing the respective object in at least one deforming direction or deforming the respective object in at least one region thereof during the lifting of the respective object. The method further includes providing, between the at least two suction elements, at least one plunger for deforming the respective object. The invention further relates to a device for performing the method.
    Type: Grant
    Filed: June 9, 2004
    Date of Patent: May 5, 2009
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Axel Trilk, Berhard Karl Wolff
  • Publication number: 20090039589
    Abstract: A feed apparatus for a printing press includes a first sucker device and a second sucker device. The first sucker device includes a guide nozzle, a sucker which is supported by said guide nozzle to be vertically movable and includes a chuck hole at a bottom for chucking the sheet, and a spring which biases said sucker toward a distal end of said guide nozzle. The guide nozzle includes a first air passage for drawing the sheet and a second air passage for drawing said sucker. The sucker includes a closing portion which closes said second air passage when said sucker is located at an upper limit against a biasing force of said spring.
    Type: Application
    Filed: August 4, 2008
    Publication date: February 12, 2009
    Inventor: Hiromichi Shimokawa
  • Patent number: 7434799
    Abstract: A film sheet feeding mechanism which can be reduced in size, and which can stably conduct a feeding operation, and a thermal development recording apparatus having such a mechanism are provided. A film sheet feeding mechanism that, from a tray on which plural film sheets are stacked, takes out one by one a uppermost film sheet, and that feeds the film sheet toward a downstream side in a direction of transporting the film sheet, includes: a feeding arm having film sucking unit for taking out the film sheet in the tray; arm moving unit for, while supporting the feeding arm, moving the feeding arm between a film taking out position of the tray and a film supplying position on the downstream side in the transportation direction; and a lifting and lowering amplification mechanism which is disposed in the feeding arm, and which lifts and lowers the film sucking unit.
    Type: Grant
    Filed: September 9, 2005
    Date of Patent: October 14, 2008
    Assignee: FUJIFILM Corporation
    Inventor: Koichi Mizuno
  • Patent number: 7434798
    Abstract: The invention relates to a method for grouping a multitude of film-like or sheet-like materials, which are stacked in a magazine (20) and which consist of at least one material layer, using at least one suction apparatus (42), which suctions the film-like or sheet-like materials in a clocked matter while removing them from the magazine, whereby one film-like or sheet-like material at a time directly rests with a portion of its surface that forms a contact surface against the suction device. To this end, one portion of the magazine contents consists of gas-impermeable film-like or sheet-like materials whereas another portion contains film-like or sheet-like materials that are each provided with at least one gas-permeable zone. The invention develops a method for grouping film-like or sheet-like materials during which a number of film-like or sheet-like materials can be grouped without impairing the speed of subsequent processing.
    Type: Grant
    Filed: October 13, 2006
    Date of Patent: October 14, 2008
    Assignee: LTS Lohmann Therapie-Systeme AG
    Inventor: Heinrich Thoeing
  • Patent number: 7431281
    Abstract: A method of separating a sheet of print media from a stack (28) of sheets, the sheets being porous, includes blowing fluid on to a top surface of a topmost sheet (28.1) of the print media on the stack (28) so that the fluid passes through at least the topmost sheet (28.1) of the stack (28) and capturing at least a part of the topmost sheet for conveyance to a printing station (13) of a printer (10).
    Type: Grant
    Filed: January 24, 2002
    Date of Patent: October 7, 2008
    Assignee: Silverbrook Research Pty Ltd
    Inventor: David William Jensen
  • Patent number: 7377507
    Abstract: An automatic flat-article dispensing apparatus which can dispense a relatively large and heavy flat articles without damaging the articles and without increasing the size of the apparatus and significantly increasing the energy consumption. The apparatus for dispensing a flat article, has a table which supports stacked flat articles and suction ports disposed over the table and facing the flat articles. A suction device provides suctions to hold the top flat article of the stacked flat articles by sucking air through the suction ports. A conveyance device conveys the flat article sucked via the suction port in a lateral direction with respect to the direction of the stack. The suction ports are a first suction port and a second suction port which are disposed in the lateral direction.
    Type: Grant
    Filed: January 4, 2006
    Date of Patent: May 27, 2008
    Assignee: Asahi Seiko Co., Ltd
    Inventor: Takahito Yamamiya
  • Patent number: 7364150
    Abstract: An air duct is disposed in the vicinity of a heating member generating the heat for heating sheets stacked in a sheet tray, and the air in the air duct is heated by the heat generated by the heating member. The air duct is connected to an air blowing portion blowing the air toward the sheets stacked in the sheet tray, and the air in the air duct that is heated by the heat generated by the heating member is blown toward the sheets stacked in the sheet tray by the air blowing portion.
    Type: Grant
    Filed: January 31, 2006
    Date of Patent: April 29, 2008
    Assignee: Canon Kabushiki Kaisha
    Inventor: Yoshimitsu Nakane
  • Publication number: 20080088078
    Abstract: The position of a sheet accommodated in a sheet storage portion is restricted by a restricting member provided movably on a sheet storage portion. This restricting member has a holding portion which is movable freely and is attached detachably to the sheet storage portion so as to hold the restricting member at a restricted position corresponding to a sheet size. The end portion of the sheet whose rear end position is restricted is pressed from above by a pressing member provided movably in a vertical direction on the end portion restricting member. Then, to move the restricting member, an operation portion is operated and the holding portion is moved in a direction of releasing the engagement and the pressing member is raised upward of accommodated sheets.
    Type: Application
    Filed: October 10, 2007
    Publication date: April 17, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Hideki Kushida
  • Publication number: 20080088077
    Abstract: An upper limit detection sensor detects that a top face position of a sheet stack on a tray reaches an upper limit position which enables feeding of sheets one by one by a sheet feeding portion and a lower limit detection sensor detects that the top face position of the sheet stack on the tray reaches a lower limit position which enable feeding of sheets one by one. When the sheet stack is loosened by blowing air against a side face of the sheet stack on the tray with an air spouting nozzle provided on an air loosening device, if a sheet floated by air from the air loosening device exceeds an upper limit position of a feeding enabled range, the lowering amount of the tray is controlled so that at least a sheet next to the sheet to be fed is not lower than a lower end position of the air spouting port of the air loosening device.
    Type: Application
    Filed: October 5, 2007
    Publication date: April 17, 2008
    Applicant: CANON KABUSHIKI KAISHA
    Inventor: Takashi Fujita
  • Publication number: 20070210505
    Abstract: In an image system, a suction disc is used for adhering to paper to lift up the paper. A drawing device pulls a perimeter of a flexible and deformable suction disc to deform the suction disc, and the pulling force is released when the suction disc contacts the paper, resulting in the suction disc adhering to the paper. The drawing device pulls the perimeter of the suction disc again that the adhering force between the suction disc and the paper is lost in order to drop the paper.
    Type: Application
    Filed: August 10, 2006
    Publication date: September 13, 2007
    Inventor: Chui-Chien Chiu
  • Publication number: 20070205551
    Abstract: In a device that separates a sheet and extracts the sheet from a stack of the sheets, the stack of sheets is placed on a sheet feeding unit. A vibrator is contact with the top surface of the stack at a spot to vibrate the sheets at a high frequency. The high-frequency vibration reduces the adhesion and frictional force among the sheets. A sheet extraction mechanism conveys each sheet.
    Type: Application
    Filed: September 27, 2006
    Publication date: September 6, 2007
    Inventors: Hideki Nukada, Yuko Kobayashi, Kiminori Toya
  • Patent number: 7188834
    Abstract: The invention relates to a method for grouping a multitude of film-like or sheet-like materials, which are stacked in a magazine (20) and which consist of at least one material layer, using at least one suction apparatus (42), which suctions the film-like or sheet-like materials in a clocked matter while removing them from the magazine, whereby one film-like or sheet-like material at a time directly rests with a portion of its surface that forms a contact surface against the suction device. To this end, one portion of the magazine contents consists of gas-impermeable film-like or sheet-like materials whereas another portion contains film-like or sheet-like materials that are each provided with at least one gas-permeable zone. The invention develops a method for grouping film-like or sheet-like materials during which a number of film-like or sheet-like materials can be grouped without impairing the speed of subsequent processing.
    Type: Grant
    Filed: April 16, 2002
    Date of Patent: March 13, 2007
    Assignee: LTS Lohmann Therapie-Systeme AG
    Inventor: Heinrich Thöing
  • Patent number: 7070179
    Abstract: A system and method for feeding and transporting documents are provided. The method includes directing airflow to a fixed location upstream of a feeder at a stack of documents such that a document trailing edge passing the fixed location causes a disruption in the airflow. The method further comprises sensing the airflow disruption to indicate detection of the document trailing edge at the fixed location. Various techniques may be utilized for sensing the airflow disruption including detecting air pressure variations, accelerations, and/or deflections that result from the disruption and airflow.
    Type: Grant
    Filed: December 26, 2002
    Date of Patent: July 4, 2006
    Assignee: Unisys Corporation
    Inventors: Johan P. Bakker, Jeremy J. Curcuri
  • Patent number: 7028617
    Abstract: A printing plate sucker capable of stably suction-adhering and sheet-feeding both a printing plate and a protective sheet simultaneously without causing wrinkling at the protective sheet during the suction-adherence and sheet-feeding. The sucker is structured by a main body portion formed of a stiff body, a skirt portion formed of a resilient body, and a spring. When a moment from a printing plate acts on the sucker during sheet-feeding, the spring resiliently deforms. Thus, the main body portion is displaced (inclined) in the moment application direction, effective weight on the sucker is reduced, and a state in which a reduced moment acts on the sucker is achieved (the moment is substantially absorbed). Furthermore, the spring which redirects the moment is structured separately from the main body portion and skirt portion. Therefore, the sucker will not be deformed, an interleaf sheet will not be hoistingly deformed, and wrinkling will not occur.
    Type: Grant
    Filed: December 9, 2003
    Date of Patent: April 18, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Tadanobu Shibabuki, Kazuoki Komiyama, Yoshinori Kawamura
  • Patent number: 7014185
    Abstract: In a spring-action suction head for separating sheets from a sheet stack, a first suction chamber, which can be subjected to vacuum is provided for lifting the sheet. The first suction chamber is surrounded coaxially by a second suction chamber, which can be subjected to vacuum, for holding and lowering the spring-action suction head in a controlled manner.
    Type: Grant
    Filed: October 27, 2003
    Date of Patent: March 21, 2006
    Assignee: Heidelberger Druckmaschinen Aktiengesellschaft
    Inventors: Michael Östreicher, Jochen Renner
  • Patent number: 6896252
    Abstract: A device for lifting a porous sheet from a stack of such sheets includes a gas stream supply mechanism that is configured to generate a gas stream and is positioned so that, in use, the gas stream impinges on a first sheet of the stack. The gas stream supply mechanism is configured so that the gas stream penetrates the first sheet to generate a cushion of gas between the first sheet and a second sheet, thereby lifting the first sheet from the second sheet. A capturing mechanism captures the first sheet.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: May 24, 2005
    Assignee: Silverbrook Research PTY LTD
    Inventor: David William Jensen
  • Patent number: 6854724
    Abstract: A method of separating a sheet of print media from a stack of sheets, the sheets being porous, includes blowing fluid on to a top surface of a topmost sheet of the print media on the stack so that the fluid passes through at least the topmost sheet of the stack and capturing at least a part of the topmost sheet for conveyance to a printing station of a printer.
    Type: Grant
    Filed: August 8, 2003
    Date of Patent: February 15, 2005
    Assignee: Silverbrook Research PTY LTD
    Inventor: David William Jensen
  • Patent number: 6851671
    Abstract: A method of feeding porous sheets of media from a stack of such sheets includes the step of applying a gas flow to a first sheet of a stack, via a gas conduit and nozzle so that the gas passes partially through the first sheet and impinges on a second sheet, generating a cushion of air between the first and second sheets to separate the first and second sheets. The gas flow is reversed so that the first sheet is drawn towards a pick-up surface and retained against the pick-up surface. A pick-up device that defines the pick-up surface is displaced along the feed path so that the first sheet is fed from the stack along the feed path.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: February 8, 2005
    Assignee: Silverbrook Research PTY LTD
    Inventor: David William Jensen
  • Patent number: 6848686
    Abstract: A printing assembly for printing on porous sheets of media from a stack of such sheets includes a retaining structure that is configured to retain the stack in an aligned condition. A pick-up device on the retaining structure includes a gas conduit that is in fluid communication with a gas supply and a nozzle arrangement that is in fluid communication with the gas conduit. The nozzle arrangement is shaped to define a pick-up surface. The pick-up device is displaceable along a feed path relative to the retaining structure. The nozzle arrangement is capable of directing a flow of gas onto a first sheet of the stack such that the gas passes partially through the first sheet and impinges on a second sheet, generating a cushion of air between the first and second sheets to separate the first and second sheets. The gas supply is reversible so that the first sheet can be drawn towards the pick-up surface and retained against the pick-up surface.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: February 1, 2005
    Assignee: Silverbrook Research Pty LTD
    Inventor: David William Jensen
  • Patent number: 6834851
    Abstract: A sheet feeding apparatus for feeding porous sheets from a stack includes an air displacement device having an outlet conduit. Outlet nozzles are connected to the outlet conduit. The outlet nozzles are displaceable between a pick-up position proximate a first sheet of the stack and a feed position. The air displacement device is configured to generate a flow of air from the outlet nozzles sufficient to penetrate the first sheet such that a cushion of air is generated between the first sheet and a second sheet to lift the first sheet from the second sheet. An air extraction device has an inlet conduit. Inlet nozzles are connected to the inlet conduit. The inlet nozzles define a pick-up surface and are displaceable between a pick-up position proximate a first sheet of the stack and a feed position. The air extraction device is configured to generate a flow of air into the inlet nozzles such that the first sheet is drawn against the pick-up surface.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: December 28, 2004
    Assignee: Silverbrook Research PTY LTD
    Inventor: David William Jensen
  • Patent number: 6830246
    Abstract: An apparatus for feeding porous sheets of media from a stack of such sheets includes a retaining structure that is configured to retain the stack in an aligned condition. A pick-up device is operatively arranged with respect to the retaining structure. The pick-up device includes a gas conduit that is in fluid communication with a gas supply and a nozzle arrangement that is in fluid communication with the gas conduit. The nozzle arrangement is shaped to define a pick-up surface. The pick-up device is displaceable along a feed path relative to the retaining structure. The pick-up device is positioned so that the nozzle arrangement is capable of directing a flow of gas onto a first sheet of the stack such that the gas passes partially through the first sheet and impinges on a second sheet, generating a cushion of air between the first and second sheets to separate the first and second sheets.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: December 14, 2004
    Assignee: Silverbrook Research PTY LTD
    Inventor: David William Jensen
  • Patent number: 6820871
    Abstract: A printer for printing on porous sheets of media fed from a stack of such sheets includes a gas stream supply mechanism that is configured to generate a gas stream and is positioned so that, in use, the gas stream impinges on a first sheet of the stack. The gas stream supply mechanism is configured so that the gas stream penetrates the first sheet to generate a cushion of gas between the first sheet and a second sheet, thereby lifting the first sheet from the second sheet. A capturing mechanism captures the first sheet and is displaceable between a pick-up position in which the first sheet is captured and a feed position. A displacement mechanism displaces the capturing mechanism between the pick-up and feed positions. A feed mechanism is arranged downstream of the capturing mechanism and is configured to engage the first sheet as the capturing mechanism is displaced from the pick-up position to the feed position and to feed the first sheet along a printing path.
    Type: Grant
    Filed: October 28, 2003
    Date of Patent: November 23, 2004
    Assignee: Silverbrook Research Pty LTD
    Inventor: David William Jensen
  • Publication number: 20040217539
    Abstract: A method for measuring substrate bending stiffness and thereby basis weight on a real time basis. Provided is a corrugator having a plurality of parallel ribs, with one or more sheets of the substrate provided below the corrugator wherein a predetermined gap exists between a topmost sheet of the sheets and the corrugator. A vacuum is applied between the corrugator and the topmost sheet, wherein the vacuum is sufficiently large to raise the topmost sheet, thereby deflecting and bending it into a profile corresponding to the arrangement and size of the corrugator ribs and bending stiffness of the substrate. One or more sensors are provided for measuring the deflection of the topmost sheet. The vacuum, an air knife output and/or a fluffer output are then adjusted according to predetermined rules and the measured deflection.
    Type: Application
    Filed: March 31, 2004
    Publication date: November 4, 2004
    Applicant: Xerox Corporation
    Inventor: Robert A. Clark
  • Publication number: 20040201161
    Abstract: The invention relates to a device for the delivery of flat objects to a friction/suction picking device with a suction head, the objects standing in a stack on a thin edge thereof on a support surface arranged on a stop surface and transported in the direction of the picking point using conveyor means. A sensor for measuring the vacuum in the suction head, is arranged on or in the suction head, which is connected to the drive controller on the conveyor means. Depending on the measured vacuum the conveyor means can be controlled such that the front object has an inclination as low as possible with the lowest possible stack pressure on the at least one friction picking device.
    Type: Application
    Filed: January 26, 2004
    Publication date: October 14, 2004
    Applicant: SIEMENS AG
    Inventors: Erich Groegor, Gerhard Obier, Holger Schererz
  • Publication number: 20040108649
    Abstract: A sheet feeder for use, with a stack having plates and sheets alternating. Sheets are removed by being reliably suction adhered with a sucker. The sheet feeder includes a suction device, and the sucker and device are mounted at a supporting portion. In order to allow suction adhering of the plates and sheets alternately stacked in a magazine, the suction device is operated when the sucker is brought into contact with the sheet, and the sheet is raised separately from the plate. Thereafter, the sheet is suction adhered to the sucker by suction. This makes it possible to prevent the sucker from suction adhering to the plate together with the sheet, and only the sheet is reliably from the stack.
    Type: Application
    Filed: December 4, 2003
    Publication date: June 10, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Tsukasa Ono, Takashi Koizumi, Yoshinori Kawamura, Kazuhisa Okamoto
  • Publication number: 20040041327
    Abstract: A method of separating a sheet of print media from a stack of sheets, the sheets being porous, includes blowing fluid on to a top surface of a topmost sheet of the print media on the stack so that the fluid passes through at least the topmost sheet of the stack and capturing at least a part of the topmost sheet for conveyance to a printing station of a printer.
    Type: Application
    Filed: August 8, 2003
    Publication date: March 4, 2004
    Applicant: SILVERBROOK RESEARCH PTY LTD
    Inventor: David William Jensen
  • Publication number: 20030230843
    Abstract: A top sheet feeding apparatus for feeding sheets from a stack of sheets is disclosed. The feeding apparatus comprises a sheet stack support tray for supporting a stack of sheets, an air knife device positioned immediately adjacent the front of the stack of sheets for applying a positive pressure to the sheet stack in order to separate the uppermost sheet in the stack from the rest of the stack, and a feedhead device including a vacuum plenum chamber positioned over the front of the sheet stack having a negative pressure applied thereto during feeding, the vacuum plenum chamber having a sheet corrugation member located in the center of its bottom surface and perforated feed belt means associated with the vacuum plenum chamber to transport the sheets acquired by said vacuum plenum chamber in a forward direction out of the stack support tray. The air knife device includes a pair of straight air nozzles extending from the rear portion of the air knife device.
    Type: Application
    Filed: June 13, 2002
    Publication date: December 18, 2003
    Applicant: Xerox Corporation.
    Inventor: Robert A. Clark
  • Patent number: 6659447
    Abstract: A method of separating a sheet of print media from a stack of sheets, the sheets being porous, includes blowing fluid on to a top surface of a topmost sheet of the print media on the stack so that the fluid passes through at least the topmost sheet of the stack and capturing at least a part of the topmost sheet for conveyance to a printing station of a printer.
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: December 9, 2003
    Assignee: Silverbrook Research Pty Ltd
    Inventor: David William Jensen
  • Patent number: 6652217
    Abstract: The device and method prevents a robot from carrying two blanks stuck together i.e., a double blank, from being transported storage station to a workstation. Suction cups on the robot arm grip the blank. The robot transports the blank to a double blank separation station, which has suction cups facing the opposite side of the blank. If the blank is a double blank, the opposing force from the suction cups pulls the blanks apart. The robot carries the separated single blank to the workstation. Instead of returning to the storage station to obtain another blank, the robot returns to the double blank separation station to pick up the separated blank that remained there.
    Type: Grant
    Filed: June 8, 2001
    Date of Patent: November 25, 2003
    Assignee: Kawasaki Robotics (USA), Inc.
    Inventors: Mark Prentiss Dettman, Brian Jay Bethke
  • Patent number: 6648321
    Abstract: An apparatus for separating a sheet of print media from a stack of porous sheets includes a sheet conveyor for conveying a topmost sheet of print media which has been separated from the stack to a printing station of a printer. A separator is associated with the sheet conveyor for separating the sheet of print media from the stack. The separator includes a fluid delivery arrangement for blowing fluid on to a top surface of the stack for effecting separation of the topmost sheet of print media from the stack. A capturing arrangement is carried by the sheet conveyor for capturing at least a part of the topmost sheet and for facilitating conveyance of the topmost sheet by the sheet conveyor to the printing station.
    Type: Grant
    Filed: December 4, 2002
    Date of Patent: November 18, 2003
    Assignee: Silverbrook Research Pty Ltd
    Inventor: David William Jensen
  • Patent number: 6641131
    Abstract: A handling device is proposed, in particular for handling boards and foils, with a number of suction grippers located in a plane. A suction plate (10) is provided which is made of a porous material or sintered material and a suction pressure can be applied to said suction plate, where said suction plate is equipped with openings (19) permitting passage of the suction grippers (18). In addition, positioning means (23) are provided so that in a first position setting, the suction grippers (18) extend past the suction surface (15) of the suction plate (10) and so that in a second position setting, the suction grippers (18) are set back into the openings (19) in such a manner that they no longer extend past the suction surface (15) of the suction plate (10).
    Type: Grant
    Filed: July 30, 2002
    Date of Patent: November 4, 2003
    Assignee: Festo AG & Co.
    Inventors: Eberhard Stöhr, Peter Löbelenz