Having Plural Doctor Means Patents (Class 101/350.6)
  • Patent number: 11110701
    Abstract: A main body of doctor blade chambers including a first portion configured to hold a first doctor blade, a second portion configured to hold a second doctor blade, a third portion connecting the first portion and the second portion, a cavity intended to receive ink and defined at least by the first portion, the second portion and the third portion, characterized in that the main body is a single closed hollow profile extending along a longitudinal main axis X-X, the main body being made of pultruded composite material.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: September 7, 2021
    Assignees: BOBST LYON, EPSILON COMPOSITE
    Inventors: René Bazin, Philippe Fleury, Julien Mattrand, Steve Peter Daniel Willems
  • Publication number: 20150128820
    Abstract: The system for applying a printing liquid or a printing auxiliary liquid to a rotogravure roller comprises a vat (B) containing an adhesive, lacquer or varnish (L) constituting the printing liquid or printing auxiliary liquid, a closed-chamber doctor blade device (D) communicating with the inside of the vat (B) by means of conduits (C1-C5) forming a closed circuit configured and arranged so as to extract the adhesive, lacquer or varnish (L) from the vat (B) through a first conduit (C1) and to apply same on the outer surface of the rotogravure roller (R), and to remove the leftover adhesive, lacquer or varnish (L) from the closed-chamber doctor blade device (D) and return same to the vat (B) through a second conduit (C2), and a viscosimeter (V) in fluid communication with the inside of the conduits (C1-C5) for measuring the viscosity of the adhesive, lacquer or varnish (L) flowing therethrough.
    Type: Application
    Filed: March 21, 2013
    Publication date: May 14, 2015
    Applicant: COMEXI GROUP INDUSTRIES S.A.U.
    Inventors: Carles Masgrau Lagresa, David Valverde Milan
  • Publication number: 20150107471
    Abstract: The invention relates to a device for setting at least one operating parameter of ink for a printing process of a rotary printing press, comprising an inking system which has a doctor blade device with a doctor blade chamber containing the ink for the printing process, and an ink reservoir from which ink can be supplied to the doctor blade chamber, and further comprising a supply system which allows ink to be supplied inside the inking system. According to the invention, the supply system is designed such that the supply system can be switched to a setting mode or to a production mode, the operating parameter being automatically set in the setting mode and no ink being supplied to the doctor blade chamber, and the supply system supplying ink to the doctor blade chamber in the production mode.
    Type: Application
    Filed: March 22, 2013
    Publication date: April 23, 2015
    Inventors: Lutz Telljohann, Frank Hasselmann, Andreas Ihme
  • Patent number: 8925455
    Abstract: A self-lubricating end seal, a pair of which are used to seal the opposite ends of the fluid reservoir of a doctor blade assembly, the top and bottom of which are enclosed by a pair of doctor blades which engage with a roller to transfer fluid to the roller. The seal includes a substantially rectilinear lubrication channel which may be divided into separate lubrication compartments packed with lubricant prior to attachment to the doctor blade assembly.
    Type: Grant
    Filed: September 1, 2011
    Date of Patent: January 6, 2015
    Inventor: Anthony Foley
  • Patent number: 8826818
    Abstract: The present invention relates to a scraper device for a printing machine which comprises a scraper body (20) having longitudinal blades (2) and lateral sealing elements, and having ink inlet and outlet passages (24). The scraper body (20) is supported by a scraper support (10) adjacent to an inking roller of a printing machine, and having ink supply and discharge passages (11) connected to respective ink supply and discharge conduits of an ink circulation device. Positioning and fixing means allow fixing the scraper body (20) to the scraper support (10) in an operating position in which openings (24a) of said ink inlet and outlet passages (24) of the scraper body (20) are in fluid communication with openings (11a) of said ink supply and discharge passages (11) of the scraper support (10).
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: September 9, 2014
    Assignee: Comexi Group Industries, S.A.
    Inventor: Jordi Puig Vilá
  • Patent number: 8820233
    Abstract: A method and apparatus to meter ink for electrographic printing is disclosed. An ink loading mechanism having an anilox roller fills ink from an ink supply into cells in the anilox roller having a plurality of valleys and lands that form the cells. The ink loading mechanism causes the valleys to be full or nearly full with the ink. The anilox roller rotates in a first direction. In one embodiment, a soft blade positioned slightly below surface of the lands removes ink from the cells and causes the valleys to be partially filled as the anilox roller rotates. A hard blade positioned at the surface of the lands to clean residue of ink on the surface of the lands as the anilox roller rotates. In another embodiment, a blanket roller rotationally engaged with the anilox roller pulls ink out of the cells and causes the valleys to be partially filled. The blanket roller rotates in a second direction. A first cleaning blade cleans tops of the lands of the cells.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: September 2, 2014
    Assignees: Palo Alto Research Center Incorporated, Xerox Corporation
    Inventors: Eugene M. Chow, Jing Zhou, Gerald A. Domoto, Grace T. Brewington
  • Patent number: 8474378
    Abstract: A chamber blade/sealing assembly for use with a fluid chamber which supplies fluid to a roll, includes a containment blade including an elongated thin plate having opposite ends; and a wear element which increases at least one of stiffness and wear of the thin plate, mounted to a surface of the thin plate at the opposite ends thereof. First and second end seals for sealing first and second ends of the fluid chamber, each include a supporting wall, an upper concave surface on the supporting wall and adapted to engage an outer surface of the roll, and a first upper supporting surface extending from one end of the upper concave surface, the first upper supporting surface adapted to receive the wear element such that the wear element does not substantially increase pressure from the roll on the containment blade at the first upper supporting surface.
    Type: Grant
    Filed: February 14, 2011
    Date of Patent: July 2, 2013
    Assignee: Valley Holdings, LLC
    Inventor: Mark E. Van Denend
  • Publication number: 20130087058
    Abstract: An inking apparatus for a printing press is provided. The inking apparatus includes an anilox roll and at least one ink pump. The anilox roll includes an interior region, a porous layer surrounding the interior region and an outer surface of engraved cells surrounding the porous layer. The at least one ink pump is adapted to pump ink into the interior region and through the porous layer to the outer surface of engraved cells. A printing press and a method for providing ink to an anilox roll are also provided.
    Type: Application
    Filed: November 30, 2012
    Publication date: April 11, 2013
    Applicant: GOSS INTERNATIONAL AMERICAS, INC.
    Inventor: GOSS INTERNATIONAL AMERICAS, INC.
  • Patent number: 8408127
    Abstract: A method for mounting and dismounting a doctor blade chamber in a support holder on a printing unit as well as an apparatus in which the doctor blade chamber is placed in the support holder in a mounting position and subsequently is brought in contact with a roller, preferably, an anilox roller, in a position of operation. The method and the apparatus advantageously have the doctor blade chamber disposed with the opening upwards in the support holder, preferably in a horizontal position or in a position at such a small angle that ink does not run out of the doctor blade chamber, and is brought into a position under the roller, after which the doctor blade chamber is brought into contact with the roller and pivoted about an axis coinciding with the rotary axis of the roller, into the position of operation.
    Type: Grant
    Filed: May 18, 2009
    Date of Patent: April 2, 2013
    Assignee: Tresu A/S
    Inventor: Mikkel Qvist Nielsen
  • Publication number: 20130047876
    Abstract: Disclosed herein is a doctor blade apparatus, including a printing cylinder; a pre-wipe removing a portion of ink applied to a surface of the printing cylinder, while being spaced apart from the surface of the printing cylinder; and a blade removing the ink applied to the surface of the printing cylinder, while being in contact with the surface of the printing cylinder, whereby a life span of the blade can be remarkably improved and work suspension due to replacing the blade can be minimized. Furthermore, abrasion of the printing cylinder generating friction with the blade can be minimized, such that the entire lifespan of printing equipment can be improved.
    Type: Application
    Filed: August 7, 2012
    Publication date: February 28, 2013
    Inventors: Jin Hyuk JUNG, Tae Jun Choi, Yang Soo Choi
  • Patent number: 8347786
    Abstract: An ink chamber doctor blade for acting upon an ink transfer roll of a rotary press with a fluid, in particular with a printing ink, has an ink chamber, which is filled with ink during printing, and which extends in an axial direction of the ink transfer roll, and two doctor blades which are in physical contact with the ink transfer roll during printing and which extend in the axial direction of the ink transfer roll. At least one additional doctor blade can be inserted into the ink chamber doctor blade and can be fixed by holding devices inside the ink chamber. The holding device has at least one element, which is pretensioned by elastic force against at least one counter holder, and with which the additional doctor blade can be pressed against the counter holder.
    Type: Grant
    Filed: July 10, 2006
    Date of Patent: January 8, 2013
    Assignee: Windmoeller & Hoelscher KG
    Inventors: Frank Hasselmann, Lutz Telljohann, Frank Dirksmeier, Klaus Gräler
  • Publication number: 20120210891
    Abstract: A pressure adjustment device of a chambered doctor blade system of a printing press includes at least one chambered doctor blade, at least one ink chamber having at least one supply line connected to an ink reservoir and having at least one drain line or overflow opening that at least partially forms a return flow path of the medium from the at least one ink chamber to the at least one ink reservoir. At least one pressure release valve is arranged in the one of the drain line or overflow opening. Another pressure release valve is also arranged in the at least one supply line. One of the pressure release valves is configured as a passive pressure release valve. The at least one pressure release valve arranged in the at least one supply line has a line connection to at least one bypass line. That bypass line is arranged to at least partially form a return flow path of the medium from the supply line to the ink reservoir.
    Type: Application
    Filed: September 30, 2010
    Publication date: August 23, 2012
    Applicant: KOENIG & BAUER AKTIENGESELLSCHAFT
    Inventors: Bernd Kurt Masuch, Wolfgang Otto Reder
  • Patent number: 8245636
    Abstract: Doctor blade assembly for rotogravure printing units, having a support structure for a doctor blade, a holding device of the support structure and a moving device for moving the holding device. The holding device includes a mounting suitable to fix either a chambered doctor blade or a non-chambered doctor blade to the moving device.
    Type: Grant
    Filed: February 6, 2012
    Date of Patent: August 21, 2012
    Assignee: Bobst Group Italia S.p.A.
    Inventor: Renzo Melotti
  • Publication number: 20120180677
    Abstract: A doctor assembly for a pad printing system includes a body and a doctor blade. The body has an outer surface and an opposite inner surface that defines a passageway through the body. The inner surface engages a removable pre-filled ink cup to secure the ink cup to the body. The inner surface directs ink from the ink cup through the passageway toward an ink-receiving surface of a cliché device. The doctor blade is coupled with the body and engages the cliché device. The doctor blade wipes the ink along the cliché device as the body laterally moves relative to the cliché device. The doctor blade is coupled with the body such that the doctor blade is laterally spaced apart from the inner surface of the body.
    Type: Application
    Filed: March 29, 2012
    Publication date: July 19, 2012
    Applicant: ILLINOIS TOOL WORKS INC.
    Inventors: Samuel Peterson, Christopher Schaafsma, Sigi Knappik, Christopher Williamson
  • Patent number: 8205550
    Abstract: A method of operating an anilox printing unit in which ink accumulates on and detaches from a feed blade and, after detaching from the feed blade, forms ink accumulations on a screen roller, and in which a gap is formed between the screen roller and a further roller for the ink accumulations to pass through the gap without contacting the further roller, includes forming the gap by displacing the axis of the further roller and evening out the ink accumulations on the screen roller to such an extent that the ink accumulations that have been evened out pass the gap without contacting the further roller. A smoothing roller, for example, may be used to even out the ink accumulations. A printing press for carrying out the method is also provided.
    Type: Grant
    Filed: December 5, 2007
    Date of Patent: June 26, 2012
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Gisela Binder, Suat Demir, Jürgen Michels, Dieter Schaffrath, Jörg Schilfahrt, Wolfgang Schönberger, Bernhard Schwaab, Michael Thielemenann
  • Publication number: 20110247512
    Abstract: A method for producing doctor blades from metal, in particular from steel, the doctor blades to be produced having a reduced material thickness in a region of a working edge. The material thickness is essentially constant in the region of reduced material thickness. By a planing operation being used upon a basic body with an essentially constant material thickness, the region of reduced material thickness is generated. By the region of reduced material thickness being generated by means of a planing operation, an efficient and cost-effective method for the production of doctor blades is achieved.
    Type: Application
    Filed: April 13, 2010
    Publication date: October 13, 2011
    Applicant: DAETWYLER SWISSTEC AG
    Inventors: Hans Jörg Brudermann, Peter Daetwyler
  • Publication number: 20110226144
    Abstract: A doctor blade for wiping printing ink off a surface of a printing plate and/or for use as a paper doctor knife, has a flat and elongated main body including a working edge region configured in a longitudinal direction, wherein at least the working edge region is covered with a first coating on the basis of a nickel-phosphorus alloy. The doctor blade is characterized in that monocrystalline and/or polycrystalline diamond particles are dispersed in the first coating, wherein a particle sizes of the diamond particles measure at least 5 nm and less than 50 nm.
    Type: Application
    Filed: September 10, 2009
    Publication date: September 22, 2011
    Applicant: DAETWYLER SWISSTEC AG
    Inventors: Hans Jörg Brudermann, Sibylle Stiltz, Andreas Hugli
  • Publication number: 20110219971
    Abstract: A doctor blade for wiping printing ink off a surface of a printing plate, comprising a flat and elongated main body having a working edge region configured in a longitudinal direction, the working edge region being covered with a first coating on the basis of a nickel-phosphorus alloy applied by electroless deposition, and hard material particles being dispersed in the first coating, characterized in that the first coating is covered with a second coating on the basis of galvanically deposited nickel.
    Type: Application
    Filed: August 27, 2009
    Publication date: September 15, 2011
    Applicant: DAETWYLER SWISSTEC AG
    Inventors: Hans Jörg Brudermann, Sibylle Stiltz, Andreas Hugli
  • Patent number: 8007090
    Abstract: An ink cartridge has a pair of elongated, longitudinally extending, and transversely spaced side plates and a pair of short, transversely extending, and longitudinally spaced end plates bridging the side plates and forming therewith an downwardly open compartment adapted to hold a body of ink. Respective doctor blades extend transversely toward each other from lower edges of the side plates and define a floor of the compartment and a central downwardly open mouth adapted to feed ink from the body to a roll below the compartment. Respective axially spaced flexible bodies carried on the end plates are shiftable between outer positions generally disengaged from axial end edges of the doctor blades and inner positions bearing axially against the axial end edges.
    Type: Grant
    Filed: September 3, 2008
    Date of Patent: August 30, 2011
    Assignee: KBA-Metronic AG
    Inventors: Rainer Wieland, Peter Schmitt
  • Patent number: 8006616
    Abstract: A printing roller has an outer surface and is rotatable in a rotational sense about a roller axis. A liquid applicator has an upstream blade having an edge engageable with the roller surface and a downstream blade having an edge engageable with the roller surface downstream in the sense from the upstream-blade edge. The blades form a compartment fillable with a liquid to be applied to the roller outer surface. The upstream blade is shifted on rotation of the roller between an engaged position with the respective edge engaging the surface and a disengaged position with the respective edge spaced radially from the surface.
    Type: Grant
    Filed: May 29, 2008
    Date of Patent: August 30, 2011
    Assignee: KBA-Metronic AG
    Inventors: Josef Kleinschnitz, Frank Kirchner
  • Patent number: 7997197
    Abstract: A printer having a roll with a radial outer roll surface has an ink cartridge having a housing itself having a pair of side walls and a pair of end walls bridging the side walls and defining therewith a downwardly open mouth juxtaposed with the roll surface. One of the side walls is shiftable between an outer position defining a relatively large volume and an inner position. Doctor blades supported on the housing have outer edges resiliently engageable at the mouth with the surface. One of the doctor blades is shiftable between an open position with its outer edge spaced from the other doctor blade and a closed position. A mechanism connected to the one wall and to the one doctor blade shifts the one doctor blade between the open position and the closed position and simultaneously shifts the one wall from the inner position to the outer position.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: August 16, 2011
    Assignee: KBA-Metronic AG
    Inventors: Rainer Wieland, Peter Schmitt
  • Publication number: 20110185929
    Abstract: An ink metering device for a printing press, providing improved handling of an ink fountain foil and reduced set-up times, includes an ink fountain for ink, an ink fountain roller rotating about an axis and dipping into the ink fountain, a plurality of zonal metering elements having blade edges at an adjustable distance from a circumferential surface of the roller, and at least one foil between the blade edges and the circumferential surface. The foil is fixed to the ink fountain and angled on one end along a straight line parallel to the axis. The ink fountain is to be thrown on and thrown off the roller between an operating position and a foil exchange position. The foil has a bend or curve so that when the ink fountain is thrown on, a foil end facing the roller is located substantially tangential with the circumferential surface before reaching an operating position.
    Type: Application
    Filed: February 1, 2011
    Publication date: August 4, 2011
    Applicant: HEIDELBERGER DRUCKMASCHINEN AKTIENGESELLSCHAFT
    Inventor: Martin Mayer
  • Patent number: 7987783
    Abstract: A doctor blade system for printing units is disclosed, which is arranged for applying ink, or the like to a rotatable cylinder in a printing unit, comprising an elongated frame, having a support and at least one clamp, which frame is arranged parallel to and outside the cylinder and on which are mounted, on each clamp of the frame, an elongated doctor blade, which is arranged for operative wiping engagement against the cylinder, each clamping portion comprising an elongated slit into which a doctor blade is intended to be partly introduced and fixed by a clamp, wherein the clamp is resiliently arranged for providing a damping action for the doctor blade. A doctor blade clamping device is also disclosed, as well as a chambered doctor blade system, a printing unit, and a method for attaching a clamping portion of a chambered doctor blade frame.
    Type: Grant
    Filed: December 20, 2004
    Date of Patent: August 2, 2011
    Assignee: Ake-Boose International AB
    Inventors: Åke Bööse, Fredrik Irlén
  • Patent number: 7921773
    Abstract: A doctor blade system utilizes a lightweight doctor blade chamber to apply ink to an inking roller. The doctor blade chamber is removably positioned on a support plate which is, in turn, carried by linear guides on pivotable end plates. A rigid box beam is also attached to the end plates and is spaced from the support plate. A plurality of membrane cylinders are mounted on the rigid box beam and engage a surface of the support plate opposite to the surface that supports the doctor blade chamber. Through the application of suitable force, the support plate and its supported doctor blade chamber can be moved, by sliding motion on the linear slides, into uniform engagement with the surface of the ink roller. The system uses pivotable end plates which are supported by exterior plates that are, in turn, pivotably supported by press side frames.
    Type: Grant
    Filed: April 28, 2008
    Date of Patent: April 12, 2011
    Assignee: Koenig & Bauer Aktiengesellschaft
    Inventors: Ewald Röthlein, Helmut Schmidt
  • Publication number: 20110061550
    Abstract: A method for mounting and dismounting a doctor blade chamber in a support holder on a printing unit as well as an apparatus in which the doctor blade chamber is placed in the support holder in a mounting position and subsequently is brought in contact with a roller, preferably, an anilox roller, in a position of operation. The method and the apparatus advantageously have the doctor blade chamber disposed with the opening upwards in the support holder, preferably in a horizontal position or in a position at such a small angle that ink does not run out of the doctor blade chamber, and is brought into a position under the roller, after which the doctor blade chamber is brought into contact with the roller and pivoted about an axis coinciding with the rotary axis of the roller, into the position of operation.
    Type: Application
    Filed: May 18, 2009
    Publication date: March 17, 2011
    Applicant: TRESU A/S
    Inventor: Mikkel Qvist Nielsen
  • Patent number: 7779758
    Abstract: A system to remove most or substantially all of the residual ink from an ink chamber prior to post print washing, said ink chamber comprising an ink chamber profile provided with a space for ink, at least one inlet and at least one outlet, and with upper and lower doctor blade members detachably mounted on the ink chamber profile, said blades bounding an opening which, in operation, faces and engages with the outer circumference of an engraved cylinder and which extends over the length of the ink chamber profile, the ink chamber profile being sealed at its extremities by flexible seals, said ink chamber profile, end seals, doctor blades and engraved cylinder demarcating an ink cavity, characterized in that there is further provided a shuttle member within the ink cavity, said shuttle member being movable substantially along the entire length of the ink chamber profile in order to aid purging of residual ink from said ink cavity, said shuttle member further being provided with associated drive means to induce
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: August 24, 2010
    Assignee: Absolute Engineering, Limited
    Inventors: Stephen Wintersgill, John Robinson, David William Burke, Antony Whiteside
  • Patent number: 7685937
    Abstract: A composite doctor blade to be installed in a blade holder (11) containing a throat (15) has a rear part (14) made of a composite material which has a profiling (16) which protrudes beyond the plane (18) defined by the doctor blade in order to retain the doctor blade in the blade holder (11). At a distance from the rear part (14), part (17) of the profiling (16) protrudes from the plane (18) to one side only. Moreover, the part (17) is higher than its width in the cross-sectional plane of the doctor blade.
    Type: Grant
    Filed: December 15, 2005
    Date of Patent: March 30, 2010
    Assignee: Metso Paper, Inc.
    Inventors: Mikko Karioja, Ari Närhi, Harri Ruotsalainen
  • Patent number: 7658876
    Abstract: The present disclosure relates to a process for making a seamless tube from a liquid. A mandrel may be provided having a longitudinal axis, an outer surface and a length. A liquid material may be applied to the outer surface of the mandrel by one or more doctor blades, spaced apart from the mandrel outer surface and inclined at an angle ? with respect to the mandrel longitudinal axis, which may be moved along the longitudinal axis of the mandrel while rotating the mandrel around its longitudinal axis. One or a plurality of fingers may overly the mandrel and be positioned upstream of the one or more of blades, relative to the direction of movement of the blades along the longitudinal axis of the mandrel. The liquid material may then be converted to form a seamless tube.
    Type: Grant
    Filed: February 8, 2008
    Date of Patent: February 9, 2010
    Assignee: Lexmark International, Inc.
    Inventors: Larry Oral Aulick, Jean Marie Massie, David Allen Tinsley
  • Patent number: 7597761
    Abstract: A sealing assembly for an ink chamber associated with an anilox roll, includes a doctor blade having a doctoring edge, with each end having a notch at the doctoring edge, and first and second seals adapted to seal ends of the ink chamber. Each seal includes a peripheral supporting wall, an upper wall thereon including an upper concave surface for engaging an outer surface of the anilox roll, a flat upper supporting surface at opposite ends of the upper wall on which ends of the doctor blade seat, and an extension above the flat upper supporting surface for engaging within the notch at the end of the doctor blade to permit the doctor blade to bend thereat. A lubricant chamber is defined therein and the upper wall includes an opening through which the lubricant is forced out of the lubricant chamber due to external pressure.
    Type: Grant
    Filed: August 10, 2006
    Date of Patent: October 6, 2009
    Inventor: Mark E. Van Denend
  • Publication number: 20090193990
    Abstract: A seal adapted to seal an end of a fluid chamber which supplies fluid to a roll, includes at least one supporting wall and an upper concave surface on the at least one supporting wall and adapted to engage an outer surface of the roll. First and second, sloping, upper supporting surfaces are formed at opposite ends of the upper concave surface for receiving an end of a doctor/sealing blade thereon. Four flexible, resilient upstanding wings are provided along side edges of the first and second upper supporting surfaces for providing a sealing engagement with the doctor/sealing blades, even when the doctor/sealing blades bow outwardly away from the first and second upper supporting surfaces.
    Type: Application
    Filed: February 6, 2008
    Publication date: August 6, 2009
    Inventor: Mark E. Van Denend
  • Patent number: 7555982
    Abstract: A process and a device supply printing ink to and remove link from a doctor blade device of the inking system of a rotary printing press. The device has a doctor blade support provided with a linearly extending groove and with doctor blades that are contacted with an inking roller or screen roller, the blades forming together with the inking roller and the groove an inking chamber. The device has conduits and motor-driven pump devices that supply ink to and remove ink from the inking chamber. The motors are preadjusted in terms of their parameters and are not modifiable during operation. A portion of the ink from the flow of ink supplied to the doctor blade device can be diverted to an ink supply source, and/or a portion of the ink from the flow of ink removed from the doctor blade device can be returned to the ink supply conduit.
    Type: Grant
    Filed: May 30, 2003
    Date of Patent: July 7, 2009
    Assignee: Windmoeller & Hoelscher KG
    Inventor: Lutz Telljohann
  • Publication number: 20090056573
    Abstract: A printer has a press frame and a roll rotatable in the frame about an axis and having a radially outwardly directed roll surface. An ink cartridge has a housing having a pair of support plates juxtaposed with and angularly spaced along the roll surface. Doctor blades supported on the support plates have outer edges resiliently engageable with the surface. One of the doctor blades is shiftable on the housing between an open position and a closed position with the outer edges engaging each other. Interengageable formations on the housing and on the press frame are movable between a use position retaining the housing on the press frame with the outer edges engaging the surface and a removal position. An actuating element is shiftable to move the one doctor blade from the open position to the closed position and shift the formations from the use position into the removal position.
    Type: Application
    Filed: September 2, 2008
    Publication date: March 5, 2009
    Inventors: Rainer Wieland, Peter Schmitt
  • Publication number: 20090056574
    Abstract: A printer having a roll with a radial outer roll surface has an ink cartridge having a housing itself having a pair of side walls and a pair of end walls bridging the side walls and defining therewith a downwardly open mouth juxtaposed with the roll surface. One of the side walls is shiftable between an outer position defining a relatively large volume and an inner position. Doctor blades supported on the housing have outer edges resiliently engageable at the mouth with the surface. One of the doctor blades is shiftable between an open position with its outer edge spaced from the other doctor blade and a closed position. A mechanism connected to the one wall and to the one doctor blade shifts the one doctor blade between the open position and the closed position and simultaneously shifts the one wall from the inner position to the outer position.
    Type: Application
    Filed: September 4, 2008
    Publication date: March 5, 2009
    Inventors: Rainer WIELAND, Peter SCHMITT
  • Patent number: 7497161
    Abstract: There is described a printing unit and a method for printing with flexographic inks. The printing unit includes a screen roller engaging a doctor blade system (3), and which is in continuous operation, either by engaging a motor (10) or by operation by the transmission (2) of the printing machine. The screen roller (1) of the printing unit interacts with a rubber sheet (16) which is disposed on a rubber sheet cylinder (4) at a position between a printing plate cylinder (5) and a back-pressure cylinder (6). A slot (7) is provided in the rubber sheet, used when the screen roller (1) is to be engaged with the rubber sheet (17).
    Type: Grant
    Filed: April 1, 2004
    Date of Patent: March 3, 2009
    Assignee: Tresu Anlæg A/S
    Inventors: Jesper Ravn Jensen, Erik Gydesen, Henrik Leimand
  • Publication number: 20080295718
    Abstract: A printing roller has an outer surface and is rotatable in a rotational sense about a roller axis. A liquid applicator has an upstream blade having an edge engageable with the roller surface and a downstream blade having an edge engageable with the roller surface downstream in the sense from the upstream-blade edge. The blades form a compartment fillable with a liquid to be applied to the roller outer surface. The upstream blade is shifted on rotation of the roller between an engaged position with the respective edge engaging the surface and a disengaged position with the respective edge spaced radially from the surface.
    Type: Application
    Filed: May 29, 2008
    Publication date: December 4, 2008
    Inventors: Josef Kleinschnitz, Frank Kirchner
  • Patent number: 7337720
    Abstract: A dual-doctor blade assembly that can accurately meter ink delivery to the anilox cells on the anilox roll of a flexographic printing system. The system utilizes a retractable dual-blade configuration in conjunction with an ink chamber and a gap between the lower doctor blade and the anilox roll. The entire configuration can be adjusted for anilox rolls of various diameters. The upper blade in this system contacts the anilox roll at a point after its rotation through the application tray and scrapes ink from the surface of the anilox roll directly into the ink chamber. As the chamber fills with ink, the hydraulic pressure created by the spinning of the anilox roll increases to a point where the anilox cells are filled to the appropriate volume. The gap created between the lower doctor blade and the anilox roll serves two functions.
    Type: Grant
    Filed: April 6, 2004
    Date of Patent: March 4, 2008
    Assignee: F.L. Smithe of Canada, Inc.
    Inventors: Pascal Ross, Mario Brunelle, Joey Hanachian
  • Publication number: 20080034997
    Abstract: A sealing assembly for an ink chamber associated with an anilox roll, includes a doctor blade having a doctoring edge, with each end having a notch at the doctoring edge, and first and second seals adapted to seal ends of the ink chamber. Each seal includes a peripheral supporting wall, an upper wall thereon including an upper concave surface for engaging an outer surface of the anilox roll, a flat upper supporting surface at opposite ends of the upper wall on which ends of the doctor blade seat, and an extension above the flat upper supporting surface for engaging within the notch at the end of the doctor blade to permit the doctor blade to bend thereat. A lubricant chamber is defined therein and the upper wall includes an opening through which the lubricant is forced out of the lubricant chamber due to external pressure.
    Type: Application
    Filed: August 10, 2006
    Publication date: February 14, 2008
    Inventor: Mark E. Van Denend
  • Patent number: 7287471
    Abstract: A color chamber doctor blade has two doctor blade knives oriented in a roof-like fashion against a roller, from which the two doctor blade knives can be fixed on a doctor blade chamber body by means of a clamping plate. The clamping plate is in active connection with long-stretch fasteners in the axial direction (z) of the roller. The long-stretch fasteners are arranged substantially parallel to the clamping plate, and apply the force required for fixing at least one doctor blade knife. The resultant of the force exercised by the fasteners points toward the doctor blade chamber body.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: October 30, 2007
    Assignee: Windmoeller & Hoelscher KG
    Inventors: Klaus Graeler, Guenter Rogge
  • Publication number: 20070186794
    Abstract: An inking device for inking the screened cylinder of a printing machine, in particular a flexographic printing machine, comprises an inking chamber, delimited by delimiting doctors, and coupled to an ink vessel to which ink is continuously supplied through an ink delivery pipe and therefrom a pipe for continuously supplying ink to the inking chamber extends, a further outlet overflow pipe having an open end leading to the ink vessel, the open end of the outlet pipe being arranged at a level approximately corresponding to the top level of the inking chamber.
    Type: Application
    Filed: February 9, 2007
    Publication date: August 16, 2007
    Inventor: Mario Forno
  • Publication number: 20070175347
    Abstract: A spacer ink printing apparatus for printing spacers on an LCD substrate includes a main body, a pressing roller and a spacer ink removing portion. The apparatus may further include a spacer ink guiding portion and/or a spacer ink spreading portion. The pressing roller is combined with the main body and rotates so as to press a spacer ink sprayed onto a printing plate into each of a plurality of receiving recesses of the printing plate. The spacer ink removing portion is combined with the main body and serves to remove any excess spacer ink from the printing plate, thereby reducing wasted spacer ink and decreasing the manufacturing cost of LCDs produced with the apparatus.
    Type: Application
    Filed: October 4, 2006
    Publication date: August 2, 2007
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Bong-Sung Seo, So-Youn Park, Jeong-Uk Heo
  • Patent number: 7234396
    Abstract: An ink applicator has at least one generally stationary mounting part, a fixed elongated bar fixedly mounted on the mounting part and carrying an elongated applicator blade, and a movable elongated bar mounted on the mounting part, extending parallel to the fixed bar, carrying an elongated applicator blade parallel to the fixed-bar blade, and defining an elongated ink-holding compartment with the fixed bar. The movable bar is supported on the mounting part for movement between an outer position with the movable-bar blade spaced transversely from the fixed-bar blade and defining a gap through which ink can flow out of the compartment and an inner position with the blades engaging one another and closing the gap so that no ink can flow out of the compartment.
    Type: Grant
    Filed: September 10, 2004
    Date of Patent: June 26, 2007
    Assignee: KBA-Metronic AG
    Inventors: Josef Karl Kleinschnitz, Thomas Kubert
  • Patent number: 7228800
    Abstract: A doctor beam (1) is provided for a doctor blade for application in a printing unit. The doctor beam comprises a U-shaped channel. At least the U-shaped channel (3), which is formed in a metal beam, is provided with a fibre coating (6) preferably made of carbon fibres. Hereby is achieved resistance against corrosive attack on the metal by cleaning agents and/or printing inks.
    Type: Grant
    Filed: February 14, 2001
    Date of Patent: June 12, 2007
    Assignee: Tresu Anlæg A/S
    Inventor: Henrik Leimand
  • Patent number: 7219603
    Abstract: An ink supply unit for a flexographic press that is convenient for exchange of an anilox roll and an order of colors to be printed is disclosed. A time for test printing can be shortened, thereby enhancing a working efficiency. A pivot frame can move between a printing position where an anilox roll is mounted on a stationary frame to engage a printing cylinder and an exchanging position where the anilox roll is spaced away from the stationary frame to disengage the printing cylinder. An ink level of a maximum amount of ink contained in an ink chamber is located near a contact position between an upper doctor blade and the anilox roll, when the pivot frame is located at the printing position. The ink level is located below a lower doctor blade, when the pivot frame is located at the exchanging position.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: May 22, 2007
    Assignee: Kabushiki Kaisha Taiyo Kikai Seisakusho
    Inventor: Teiichirou Ishikawa
  • Patent number: 7114442
    Abstract: An inking unit for the printing couple of a double width printing press includes at least one roller. The inking unit consists of at least one, and possibly two chamber doctor blades. If there are two such chamber doctor blades, they are positioned side-by-side in an axial direction of the roller and they can operate independently of each other. If there is only one chamber doctor blade, it can have a length sufficient to enable the side-by-side positioning of at least four newspaper pages. The chamber doctor blade or blades can be positioned against or out of contact with the roller.
    Type: Grant
    Filed: November 22, 2002
    Date of Patent: October 3, 2006
    Assignee: Koenig & Bauer Aktiengesellschaft
    Inventors: Wolfgang Otto Reder, Georg Schneider
  • Patent number: 7082874
    Abstract: A short inking unit for a planographic printing unit that has a compact design and is operable for transferring an ink film to a form cylinder with high uniformity and stability. This short inking unit includes an applicator roll arrangement having a plurality of applicator rolls (5, 6; 5, 6, 15) which each interact with the form cylinder (1) and are offset with respect to one another in the direction of rotation of said form cylinder (1), and a plurality of engraved rolls (7, 8; 7, 8, 13; 17, 7, 8; 17, 7) which are offset with respect to one another in the direction of rotation of the form cylinder (1) and which each have a respective ink supply for applying ink to the engraved roll. The applicator rolls and engraved rolls form a roll train having rolls which roll on one another in pairs with each pair of rolls including one applicator roll (5, 6, 15) and one engraved roll (7, 8, 13, 17) interacting at a roll nip of the roll train.
    Type: Grant
    Filed: December 10, 2004
    Date of Patent: August 1, 2006
    Assignee: MAN Roland Druckmaschinen AG
    Inventor: Robert Konrad
  • Patent number: 6971310
    Abstract: There is described a printing unit (1) for use in an offset machine. The printing unit enables wider application of offset machines (1). This is achieved by the coating means and the water application means comprising a unit (28) consisting of a doctor blade (30) and at least one roller (29, 32) for transferring coating or water from the doctor blade (30) to the plate cylinder (15)/blanket cylinder (14) of the printing unit. The unit (28) is arranged for pivoting so that water is transferred to plate cylinder, and coating is transferred directly to the blanket cylinder.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: December 6, 2005
    Assignee: Tresu Production A/S
    Inventor: Henrik Christiansen
  • Patent number: 6886460
    Abstract: A method for conditioning a printing ink in a printing press includes providing an ink duct roller and a metering device, operating the ink duct roller in conjunction with the metering device for liquefying the printing ink before a start of printing, and providing a further roller for removing the printing ink from the ink duct roller. Removal of the printing ink from the ink duct roller by the further roller is held in a suppressed state, while simultaneously rotating the ink duct roller at a conditioning rotational speed, and simultaneously controlling the metering device pursuant to a conditioning profile, for only partially opening the metering device at least intermittently. A printing press for performing the method is also provided.
    Type: Grant
    Filed: March 24, 2004
    Date of Patent: May 3, 2005
    Assignee: Heidelberger Druckmaschinen AG
    Inventors: Martin Mayer, Nikolaus Pfeiffer, Bernhard Roskosch
  • Publication number: 20040261640
    Abstract: Lateral sealing device for doctor blade inking chambers of inking rolls for flexographic rotary printing machines, of the type comprising a rigid cassette housing a sealing element. The said sealing element is made in the form of a hollow body made from rubber or from elastomeric material having a consistency similar to that of rubber, closed on five sides and open on the side facing the end of the inking chamber, the side facing the inking roll being shaped in such a way as to have a curvature equal to that of the said roll, and provided with sides inclined in a way corresponding to the inclination of the scraper blades, an elastic element being housed inside the said hollow body and constantly pressing, with a substantially constant force, the side of the said hollow body interacting with the inking roll against the periphery of the inking roll.
    Type: Application
    Filed: June 24, 2004
    Publication date: December 30, 2004
    Inventors: Roberto Maccagni, Oscar Xerra
  • Patent number: 6832551
    Abstract: An ink chamber for rotation printing machines having an ink roll that rotates around an axis during operation, an elongated doctor blade chamber body that limits the ink chamber at least on the side opposite the ink roll, two wedge-like doctor blades that can be set to the ink roll, two sealing bodies that limit the ends of the ink chamber, whereby the sealing surfaces of the sealing bodies are set against the ink roll, and two first intermediate walls, of which one each is arranged between the dye zone of the ink roll and the respective sealing body so that first chambers are created on each side of the doctor blade chamber between the sealing bodies and the intermediate walls. At least one of the doctor blades has a length that ends between one of the intermediate walls and the sealing body on at least one end of the ink chamber.
    Type: Grant
    Filed: October 15, 2002
    Date of Patent: December 21, 2004
    Assignee: Windmoeller & Hoelscher KG
    Inventors: Rainer Jendroska, Guido Averdiek
  • Patent number: 6799508
    Abstract: The invention concerns an inking device, called doctor blade chamber, for a flexographic printing machine anilox roll (2). Said doctor blade chamber, which comprises a closed box (4, 6) borne mobile (10) by a frame (8) for being sealingly pressed against anilox roll (2), box (4, 6) defining a main chamber equipped with a couple of positive (16) and negative (18) blades. The invention is characterized in that the main chamber, equipped with means (32, 34) for being the seat of ink circulations at atomsphere pressure, is divided into two superposed chambers (20, 22) communication with each other through channels (24) circulating ink by simple gravity, from an upper supply chamber (20) to a lower delivery chamber (22), the two chambers (20, 22) being separated from each other by retaining blade (26) which provides an ink reserve (28) between two chambers (20, 22) and upstream of the negative blade (18).
    Type: Grant
    Filed: June 11, 2002
    Date of Patent: October 5, 2004
    Assignee: Saint Eloi Mecanique Outillage S.A.
    Inventor: Bernard Depond