Relief Patents (Class 430/306)
  • Patent number: 9849663
    Abstract: An apparatus comprises: (a) a rotatable drum configured to have a UV-curable printing plate with an ablatable layer thereon, placed thereon; (b) at least one laser beam to image the plate on the drum by ablating some of the ablatable layer according to image data to form an imaged plate; (c) an unloading area onto which a plate is movable when unloaded; and (d) a plurality of UV LEDs configured to apply UV radiation to the back of the UV-curable plate or to both the front and back of the UV-curable plate during or after the unloading of the imaged plate.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: December 26, 2017
    Assignee: Esko-Graphics Imaging GmbH
    Inventor: Wolfgang Sievers
  • Patent number: 9720326
    Abstract: A method of making a relief image printing element from a photosensitive printing blank is provided. A photosensitive printing blank with a laser ablatable layer disposed on at least one photocurable layer is ablated with a laser to create an in situ mask. The printing blank is then exposed to at least one source of actinic radiation through the in situ mask to selectively cross link and cure portions of the photocurable layer. Diffusion of air into the at least one photocurable layer is limited during the exposing step and preferably at least one of the type, power and incident angle of illumination of the at least one source of actinic radiation is altered during the exposure step. The resulting relief image comprises a plurality of dots and a dot shape of the plurality of dots that provide optimal print performance on various substrates, including corrugated board.
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: August 1, 2017
    Inventors: David A. Recchia, Timothy Gotsick, Ryan Vest
  • Patent number: 9618847
    Abstract: The invention relates to a method for preparing a relief printing plate from a printing plate precursor wherein at least an end of the precursor is attached to a leader forming a composite printing form precursor that securely mounts the precursor in a treatment processor. The present method advantageously allows for all or substantially all of the area of the precursor to be utilized for forming the relief surface suitable for printing.
    Type: Grant
    Filed: February 9, 2015
    Date of Patent: April 11, 2017
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Carl Bernard Arnold, Edmund Francis Schieffer, Jr., Theodore William Frentzel, Jr., James Kenton Odle
  • Patent number: 9410219
    Abstract: A crankshaft heat treatment device may include a base frame, a jig frame in which a crankshaft is rotatably supported and that is disposed to be able to move in a horizontal direction and in a vertical direction at the base frame, and a laser unit that is disposed in a predetermined fixed position and irradiates laser beam to a pin portion and a journal portion of the crankshaft so as to treat the pin portion and the journal portion with heat.
    Type: Grant
    Filed: December 19, 2013
    Date of Patent: August 9, 2016
    Assignee: Hyundai Motor Company
    Inventors: Woojun Yoon, Hee Myoung Cho
  • Patent number: 9321239
    Abstract: A laser-engravable patternable element can be used to provide a relief image for various types of printing including flexographic printing. This laser-engraveable patternable element has a one laser-engravable layer that comprises a thermoplastic elastomeric interpolymer alloy that comprises a non-crosslinked halogenated polymer, a partially crosslinked polyolefin, and a polyester. A relief image can be obtained by directly laser-engraving the noted element under suitable conditions.
    Type: Grant
    Filed: September 26, 2012
    Date of Patent: April 26, 2016
    Assignee: EASTMAN KODAK COMPANY
    Inventors: Lawrence A. Rowley, Christine J. Landry-Coltrain
  • Patent number: 9248686
    Abstract: The present invention relates to a printing element having at least one polymer layer which has photoimageable constituents and a chemically functionalized polymer to make the polymer layer either more hydrophobic or hydrophilic. In one embodiment, the printing element comprises two adjacent polymer layers on a substrate in which the photoimaged layer comprises a polymer chemically modified with hydrophobic fluoroalkyl side groups to provide differential wetting with hydrophilic inks.
    Type: Grant
    Filed: September 18, 2013
    Date of Patent: February 2, 2016
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Gary Delmar Jaycox, Graciela Beatriz Blanchet, Nancy G. Tassi
  • Patent number: 9250516
    Abstract: Forming an imaging blanket for a printing apparatus includes depositing a patternable material over a substrate, etching the patternable material according to a desired exposure pattern, hardening the etched patternable material to thereby form a template surface comprising a desired template pattern of texture features, depositing a layer of curable liquid polymer over and in physical contact with the template surface, curing the liquid polymer to thereby form the imaging blanket, and removing the imaging blanket from the template surface to thereby expose a patterned imaging surface of the imaging blanket. The image blanket may thereby be provided with a desired texture surface, for example comprised of individual molded image blanket features, such as recesses or pillars, of a desired cross-sectional shape. The image blanket is configured for and may be disposed on an image forming member of a variable data lithography system.
    Type: Grant
    Filed: July 29, 2013
    Date of Patent: February 2, 2016
    Assignee: Palo Alto Research Center Incorporated
    Inventors: Gregory B. Anderson, David K. Biegelsen, Michael Y. Young
  • Patent number: 9163307
    Abstract: Disclosed are simple, efficient, and scalable methods of patterning polymeric or metallic microstructures on planar or non-planar surfaces. The methods utilize initiated chemical vapor deposition (iCVD) technology. Also disclosed are patterned articles produced by these methods, and methods of using the articles.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: October 20, 2015
    Assignee: Massachusetts Institute of Technology
    Inventors: Karen K. Gleason, Christy D. Petruczok
  • Patent number: 9144544
    Abstract: The synthesis of silver nanoparticles from Pimpinella anisum L seeds includes providing a silver nitrate (AgNO3) solution, providing an extract of Pimpinella anisum L. plant seeds, and combining the silver nitrate solution with the extract of the Pimpinella anisum L. plant seeds to produce silver nanoparticles. The synthesis of silver nanoparticles from Pimpinella anisum L. seeds does not require toxic chemical solvents.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: September 29, 2015
    Assignee: KING SAUD UNIVERSITY
    Inventors: Mohamad Saleh Alsalhi, Akram Ahmed Alfuraydi, Sandhanasamy Devanesan
  • Patent number: 9096090
    Abstract: A method of making a relief image printing element from a liquid photopolymer composition is described. The method includes the steps of (1) casting a liquid photopolymer layer onto a cover sheet and at least substantially simultaneously placing a hacking sheet onto the liquid photopolymer layer; (2) preliminarily exposing the liquid photopolymer layer to actinic radiation to create at least one island of solid photopolymer in the liquid photopolymer layer where it is desirable to laser engrave a relief image; (3) reclaiming uncured liquid photopolymer from the relief image printing element; (4) processing the at least one island of solid photopolymer to remove uncured liquid photopolymer; (5) exposing the at least one island of solid photopolymer to actinic radiation to fully cure the islands of solid photopolymer; and (6) laser engraving the at least one island of solid photopolymer to produce the relief image therein.
    Type: Grant
    Filed: May 9, 2012
    Date of Patent: August 4, 2015
    Inventor: Ryan W. Vest
  • Patent number: 9097974
    Abstract: A relief printing form is prepared from a photosensitive element. An in-situ mask is formed and disposed above a photopolymerizable layer of the photosensitive element, the element is exposed to actinic radiation through the in-situ mask in an environment having an inert gas and a concentration of oxygen between about 30,000 ppm and about 7500 ppm to form at least a polymerized portion and an unpolymerized portion of the layer, and the exposed element is processed by treating with at least one washout solution selected from solvent solution, aqueous solution, semi-aqueous solution, or water.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: August 4, 2015
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Edmund Francis Schieffer, Jr., Mark R. Mazur
  • Patent number: 9069252
    Abstract: The invention provides a method for preparing a relief printing form from a photosensitive element. The method includes forming an in-situ mask disposed above a photopolymerizable layer of the photosensitive element, exposing the element to actinic radiation through the in-situ mask in an environment having an inert gas and a concentration of oxygen between about 50,000 ppm and about 2000 ppm to form at least a polymerized portion and an unpolymerized portion of the layer, and treating by heating the exposed element to a temperature sufficient to cause the unpolymerized portion to melt, soften, or flow.
    Type: Grant
    Filed: August 23, 2012
    Date of Patent: June 30, 2015
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Edmund Francis Schieffer, Jr., Marcia Jungran Cho
  • Patent number: 9040226
    Abstract: A method of tailoring the shape of a plurality of relief printing dots created in a photosensitive printing blank during a platemaking process including the steps of: (a) selectively exposing at least one photocurable layer to a source of actinic radiation to selectively crosslink and cure the at least one photocurable layer; and (b) developing the exposed at least one photocurable layer to reveal the relief image therein, said relief image comprising the plurality of relief printing dots. The source of actinic radiation comprises a source of UV light in the UV-A range and a source of light in the UV-C range. The at least one photocurable layer is simultaneously exposed to the source of UV light in the UV-A range and the source of UV light in the UV-C range to produce printing dots having at least one desired geometric characteristic.
    Type: Grant
    Filed: May 13, 2013
    Date of Patent: May 26, 2015
    Inventor: Chouaib Boukaftane
  • Publication number: 20150125796
    Abstract: Following imagewise exposure of a sandwiched photopolymer layer, the outer layers between which the photopolymer is interposed are separated in a manner that leaves some photopolymer on each of the separated layers. The photopolymer remaining on one layer contains the raised pattern that will carry ink, and may be subjected to further exposure to actinic radiation in order to complete the curing process without the need for washing; the photopolymer remaining on the other layer can be removed and reused. As a result, waste is minimized or eliminated.
    Type: Application
    Filed: November 6, 2013
    Publication date: May 7, 2015
    Inventors: Michael Karp, Avigdor Bieber
  • Patent number: 9023591
    Abstract: A flexography substrate for making I-plates with liquid photopolymers has, in addition to the tie-coat applied to one side to hold the photopolymers in place on the substrate, a micro-porous coating applied to the other side, enabling a masking image to be applied to it using an inkjet printer. In this way, one single sheet of film performs the dual role of substrate and I-plate masking film. By eliminating a sheet of film, the invention provides cost, quality, and environmental benefits.
    Type: Grant
    Filed: September 30, 2010
    Date of Patent: May 5, 2015
    Assignee: Chemence, Inc.
    Inventors: Peter D. Battisti, Joseph F. Rach, John P. Maneira
  • Patent number: 8985019
    Abstract: A method for making a flexographic printing master includes the steps of providing a flexographic printing support; applying image-wise on the flexographic printing support subsequent layers of radiation curable liquid by an inkjet printing device whereby one or more applied layers are immobilized using a curing device before one or more subsequent layers are applied, such that a relief with a top hat profile is obtained; and grinding the relief so that the height DT of a top hat segment is reduced. An imaging apparatus includes structure to perform the above method.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: March 24, 2015
    Assignee: Agfa Graphics NV
    Inventors: Eddie Daems, Luc Vanmaele
  • Patent number: 8985020
    Abstract: A heating step is performed in a printing operation where a gas jet emitting from a nozzle assembly impinges the exterior surface of a printing plate. The gas impingement provides rapid and specific convective heat flux to the exterior surface of the printing plate.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: March 24, 2015
    Assignee: E I du Pont de Nemours and Company
    Inventors: Carl Bernard Arnold, Gary W. Foggin
  • Patent number: 8951714
    Abstract: A relief printing plate manufacturing method includes: generating binary image data based on multivalued image data representing a printing image; generating, from the binary image data, target stereoscopic shape data; calculating, based on the target stereoscopic shape data, exposure amount data; providing a predetermined exposure amount to an outside image adjacent pixel in a range of predetermined pixels adjacent to an ON pixel; and applying laser light to an area of OFF pixels based on the exposure amount data to engrave a portion outside of an area, and applying laser light to the outside image adjacent pixel based on the predetermined exposure amount to form a relief having a projecting shape with a corner part of a flange part of a top face of the relief at least partially chamfered.
    Type: Grant
    Filed: August 15, 2012
    Date of Patent: February 10, 2015
    Assignee: FUJIFILM Corporation
    Inventors: Norimasa Shigeta, Hirokazu Kondo, Takeshi Kiso
  • Patent number: 8950326
    Abstract: A method for laser ablating an image on a blank printing plate, includes providing a peripheral tolerance region at the edges of a printing plate, mounting the printing plate on a roller, detecting positions of at least one edge of the printing plate, determining positions of all edges of the printing plate in accordance with the detection, determining an image area within boundaries of the printing plate, laser ablating an image on the printing, within the image area, laser ablating all areas outside of the image area on the printing plate to provide a relief area at which no printing, based on the determined positions of all edges of the printing plate, and controlling the laser to prevent any laser ablation outside of boundaries of the edges of the printing plate, based on the determined positions of all edges of the printing plate, within the provided peripheral tolerance region.
    Type: Grant
    Filed: April 19, 2012
    Date of Patent: February 10, 2015
    Assignee: Laser Dot Holding B.V.
    Inventors: Mark E. Van Denend, Arthur van der Weijden
  • Publication number: 20150030984
    Abstract: A method of manufacturing a flexographic printing plate includes exposing a bottom side of a flexographic printing plate substrate to UV-A radiation for a first exposure time. A top side of the flexographic printing plate substrate is exposed to UV-A radiation through a thermal imaging layer. The bottom side of the flexographic printing plate substrate is exposed to UV-A radiation for a second exposure time. The flexographic printing plate substrate is developed. The flexographic printing plate is cured. A sum of the first and second exposure times set a relief depth.
    Type: Application
    Filed: July 26, 2013
    Publication date: January 29, 2015
    Applicant: UNI-PIXEL DISPLAYS, INC.
    Inventor: Ed S. Ramakrishnan
  • Patent number: 8921035
    Abstract: A polymer washout solvent for developing a flexographic printing plate comprising: —an ester hydrocarbon component, —an ether hydrocarbon component, —an alcoholic hydrocarbon component. The washout solvent of the invention has less hazardous properties than the known solvents. Use of a polymer washout solvent for developing a flexographic printing plate in a washing step.
    Type: Grant
    Filed: June 8, 2010
    Date of Patent: December 30, 2014
    Assignee: Flexoclean Engineering B.V.
    Inventor: Figen Aydogan
  • Patent number: 8904930
    Abstract: The present disclosure describes a printing original plate capable of being laser-engraved such that printing deficiency caused by residues is avoided, and such that resolution and printing quality are good. A flexographic printing original plate capable of being laser-engraved which is obtained by subjecting a photosensitive resin composition containing (A) at least one latex having a weight-average degree of gelation of 40% or more, (B) photopolymerizable compound and (C) photopolymerization initiator to irradiation to light followed by cross-linking and curing. The photopolymerizable component (B) contains the photopolymerizable oligomer and the ethylenic unsaturated monomer in 10 to 25% by weight and 5 to 40% by weight, respectively, to the weight of the photosensitive resin composition and the ethylenic unsaturated monomer comprises 75 to 5% by weight of monofunctional monomer and 25 to 95% by weight of trifunctional monomer.
    Type: Grant
    Filed: June 9, 2009
    Date of Patent: December 9, 2014
    Assignee: Toyo Boseki Kabushiki Kaisha
    Inventors: Yukimi Yawata, Kazuya Yoshimoto, Toru Wada
  • Patent number: 8895228
    Abstract: The present invention pertains to a method for preparing a printing form from a photosensitive element by thermal treatment, wherein a gas jet emitting from a nozzle assembly impinges the exterior surface of the element to smooth or polish and mitigate marks and deformations that can be generated during development. Impingement with a heated gas jet provides surface polishing from rapid and specific convective heat flux to the exterior surface of the printing plate.
    Type: Grant
    Filed: November 1, 2012
    Date of Patent: November 25, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventors: Carl Bernard Arnold, Masayuki Kato
  • Patent number: 8895227
    Abstract: A developing solution is disclosed with which it is possible to develop a photoresist disposed on a substrate including a conductive polymer. Also disclosed is a method for forming a resist pattern using the developing solution. The developing solution contains one or more acids and/or salts thereof, the acids being selected from inorganic acids, amino acids having an isoelectric point less than 7, and carboxylic acids having two or more carboxy groups. Use of this developing solution hence inhibits the phenomenon in which a substrate including a conductive polymer suffers an increase in surface resistivity due to a developing solution, and makes it possible to obtain a fine resist pattern.
    Type: Grant
    Filed: January 20, 2011
    Date of Patent: November 25, 2014
    Assignee: Toagosei Co., Ltd.
    Inventors: Takashi Ihara, Hiromu Taguchi
  • Patent number: 8889338
    Abstract: A method of making a flexographic printing form precursor for laser engraving including the steps of (i) providing at least one layer of a curable composition on a substrate; (ii) curing the at least one layer; wherein the curable composition defining an outermost layer includes at least 0.5% by weight relative to the total weight of the composition of an organo-silicon compound including at least one polymerizable group; and a urethane (meth)acrylate oligomer having three or less polymerizable groups.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: November 18, 2014
    Assignee: Agfa Graphics NV
    Inventors: Eddie Daems, Luc Leenders
  • Publication number: 20140335456
    Abstract: A method of tailoring the shape of a plurality of relief printing dots created in a photosensitive printing blank during a platemaking process including the steps of: (a) selectively exposing at least one photocurable layer to a source of actinic radiation to selectively crosslink and cure the at least one photocurable layer; and (b) developing the exposed at least one photocurable layer to reveal the relief image therein, said relief image comprising the plurality of relief printing dots. The source of actinic radiation comprises a source of UV light in the UV-A range and a source of light in the UV-C range. The at least one photocurable layer is simultaneously exposed to the source of UV light in the UV-A range and the source of UV light in the UV-C range to produce printing dots having at least one desired geometric characteristic.
    Type: Application
    Filed: May 13, 2013
    Publication date: November 13, 2014
    Applicant: MacDermid Printing Solutions, LLC
    Inventor: Chouaib Boukaftane
  • Patent number: 8883399
    Abstract: A photosensitive resin structure having an ablation layer for a photosensitive resin for a relief printing that is capable of being processed by infrared radiation and containing an anionic polymer, a relief printing plate is produced by drawing a pattern by irradiating the ablation layer with infrared radiation; exposing the pattern by irradiating the photosensitive resin layer with ultraviolet radiation; and removing the ablation layer and unexposed photosensitive resin layer with a developer.
    Type: Grant
    Filed: December 18, 2009
    Date of Patent: November 11, 2014
    Assignee: Asahi Kasei E-Materials Corporation
    Inventor: Chisato Iso
  • Publication number: 20140322649
    Abstract: A photocurable relief image printing element is described. The photocurable relief image printing element comprises (a) a support layer; (b) one or more photocurable layers disposed on the support layer, wherein the one or more photocurable layers comprise: (i) a binder; (ii) one or more monomers; (iii) a photoinitiator; and (iv) an additive selected from the group consisting of phosphites, phosphines, thioether amine compounds, and combinations of one or more of the foregoing; (c) a laser ablatable masking layer disposed on the one or more photocurable layers, the laser ablatable masking layer comprising a radiation opaque material; and (d) optionally, a removable coversheet. The photocurable relief image printing element provides improved surface cure in digital relief image printing elements.
    Type: Application
    Filed: July 11, 2014
    Publication date: October 30, 2014
    Inventors: Jonghan Choi, Kerry O'Brate
  • Patent number: 8871431
    Abstract: A method of tailoring the shape of a plurality of relief dots created in a photosensitive printing blank during a digital platemaking process is provided. The photosensitive printing blank comprises a laser ablatable mask layer disposed on at least one photocurable layer which is mountable on a printing sleeve. The method comprises the steps of (1) laser ablating the laser ablatable mask layer to create an in situ negative in the laser ablatable layer; (2) placing a barrier layer on top of the laser ablatable mask layer; (3) exposing the at least one photocurable layer to actinic radiation through the barrier layer and the in situ negative; (4) removing the barrier layer; and (5) developing the imaged and exposed photosensitive printing blank to reveal the relief image therein, the relief image comprising the plurality of relief dots. The presence of the barrier layer produces printing dots having desired geometric characteristics.
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: October 28, 2014
    Inventors: Timothy Gotsick, David A. Recchia, Ryan W. Vest
  • Publication number: 20140315132
    Abstract: The invention pertains to an exposure apparatus, a method for exposing a photosensitive element to radiation using the exposure apparatus, and a method for preparing a printing form from the photosensitive element. The exposure apparatus includes a base assembly having an exposure bed that supports the photosensitive element, and a lamp housing assembly having two or more lamps. The lamp housing assembly includes an air distribution assembly having an air chamber that is disposed adjacent to the lamps and pressurized to provide uniform distribution of air exiting the air chamber to impinge a backside of each of the lamps. The air exiting the chamber and impinging the lamps is controlled by monitoring the temperature of the lamps and/or the irradiance emitting from the lamps.
    Type: Application
    Filed: April 3, 2014
    Publication date: October 23, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: VOLKER STRUEWE, Helmut Luetke, Rolf Schwan
  • Publication number: 20140315129
    Abstract: An imageable material can be used to form a mask image for providing a relief image. This imageable material has a simplified structure and consists essentially of, in order: a transparent polymeric carrier sheet and a barrier layer comprising a first infrared radiation absorbing compound. A first ultraviolet radiation absorbing compound is provided in the transparent polymeric carrier sheet or the barrier layer. A non-silver halide thermally sensitive imageable layer is disposed on the barrier layer and comprises a second infrared radiation absorbing compound and a second ultraviolet radiation absorbing compound. A relief image is formed by imaging the imageable material to form an imaged mask material, exposing a relief-forming material with curing radiation through the imaged mask material to form exposed regions and non-exposed regions, and developing the imaged relief-forming material to form a relief image by removing its non-exposed regions.
    Type: Application
    Filed: April 18, 2013
    Publication date: October 23, 2014
    Inventor: Kevin M. Kidnie
  • Patent number: 8867135
    Abstract: Various systems and methods are provided for non-attenuating light collimating articles. In one embodiment, among others, a phototool comprises a substrate; and a microstructured surface disposed on a first surface of the substrate, the microstructured surface comprising a plurality of light collimating articles.
    Type: Grant
    Filed: April 3, 2013
    Date of Patent: October 21, 2014
    Assignee: Xiper Innovations, Inc.
    Inventor: Rustom Sam Kanga
  • Publication number: 20140308617
    Abstract: A method of making a relief image printing element from a photosensitive printing blank is provided. The method comprising the steps of: 1) providing a photosensitive printing blank comprising a backing layer, at least one layer of photoresin on top of the backing layer and a removable coversheet on top of the at least one layer of photoresin; 2) imaging the photosensitive printing blank through the removable coversheet using a laser to create a relief image therein; and 3) removing the removable coversheet.
    Type: Application
    Filed: June 26, 2014
    Publication date: October 16, 2014
    Inventors: JONGHAN CHOI, CHOUAIB BOUKAFTANE, KERRY O'BRATE
  • Publication number: 20140295352
    Abstract: A method of tailoring the shape of a plurality of relief printing dots created in a photosensitive printing blank during a platemaking process is provided. The photocurable layer is exposed to actinic radiation using an array of UV LED light assemblies and the use of the array of UV LED light assemblies produces relief printing dots having at least one geometric characteristic selected from the group consisting of a desired planarity of a top surface of the relief printing dots, a desired shoulder angle of the relief printing dots and a desired edge sharpness of the relief printing dots.
    Type: Application
    Filed: June 12, 2014
    Publication date: October 2, 2014
    Inventor: Kyle P. Baldwin
  • Patent number: 8841062
    Abstract: Disclosed herein is a photosensitive composition comprising a heterocyclic thiol compound or tautomeric form thereof and its method of use on a substrate, which may include a chalcophile substrate.
    Type: Grant
    Filed: December 4, 2012
    Date of Patent: September 23, 2014
    Assignee: AZ Electronic Materials (Luxembourg) S.A.R.L.
    Inventors: Weihong Liu, Ping-Hung Lu, Medhat Toukhy, SookMee Lai, Yoshiharu Sakurai, Aritaka Hishida
  • Patent number: 8822131
    Abstract: Disclosed is a flexographic printing plate precursor in which formation of cracks and wrinkles in an infrared ablation layer is suppressed and the scratch resistance of the layer is improved. The precursor includes a support, photosensitive resin layer, and an infrared ablation layer that are laminated in the order presented. The binder polymer contained in the infrared ablation layer contains a polymer (A) and an acrylic resin (B). The polymer (A) contains the same structural unit as the structural unit contained in the binder polymer in the photosensitive resin layer. The mass ratio (A/B) of the component (A) with respect to the component (B) is within a range of 1/3 to 3/1. The difference between a plastic hardness (Ha) of the infrared ablation layer and a plastic hardness (Hb) of the photosensitive resin layer is 30 mN/mm2 or smaller.
    Type: Grant
    Filed: May 30, 2013
    Date of Patent: September 2, 2014
    Assignee: Tokai Rubber Industries, Ltd.
    Inventors: Daisuke Inoue, Koki Matsuoka, Hideyuki Hashimoto
  • Patent number: 8822126
    Abstract: The invention provides a resin composition for laser engraving, having a binder polymer containing at least one of a structure unit represented by the following Formula (I) or a structure unit represented by the following Formula (II). In the Formulae, Q represents a partial structure which provides an acid group having an acid dissociation constant pKa of 0 to 20 when it is in the form of -Q-H; R1 to R3 each independently represent a hydrogen atom or a monovalent organic group; and A and B each independently represent a bivalent organic connecting group. The invention further provides a relief printing plate precursor having a relief forming layer containing the resin composition, a method for manufacturing a relief printing plate having crosslinking components of the relief forming layer and laser engraving the relief forming layer, and a relief printing plate formed thereby.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: September 2, 2014
    Assignee: FUJIFILM Corporation
    Inventor: Atsushi Sugasaki
  • Patent number: 8822135
    Abstract: The invention pertains to a method for preparing a composite printing form from a single precursor that is capable of forming a relief and a carrier. The single precursor can be a single photosensitive element or a single laser-engravable print element having a reinforced elastomeric layer. The single precursor has a size that is at least 70% of a size of the carrier. The single precursor is located on the carrier by approximately positioning the precursor on the carrier that has no registration markings. Precise registration of the single precursor is achieved by using digital information generated from a computer to create the registered image on the composite form. The method is particularly suited for preparing composite printing forms for relief printing, and in particular for preparing composite printing forms for flexographic printing of corrugated substrates.
    Type: Grant
    Filed: August 9, 2012
    Date of Patent: September 2, 2014
    Assignee: E. I. Dupont de Nemours and Company
    Inventors: Robert W. Hannum, Thomas Klein
  • Patent number: 8808968
    Abstract: A photocurable relief image printing element is described. The photocurable relief image printing element comprises (a) a support layer; (b) one or more photocurable layers disposed on the support layer, wherein the one or more photocurable layers comprise: (i) a binder; (ii) one or more monomers; (iii) a photoinitiator; and (iv) an additive selected from the group consisting of phosphites, phosphines, thioether amine compounds, and combinations of one or more of the foregoing; (c) a laser ablatable masking layer disposed on the one or more photocurable layers, the laser ablatable masking layer comprising a radiation opaque material; and (d) optionally, a removable coversheet. The photocurable relief image printing element provides improved surface cure in digital relief image printing elements.
    Type: Grant
    Filed: August 22, 2012
    Date of Patent: August 19, 2014
    Inventors: Jonghan Choi, Kerry O'Brate
  • Patent number: 8795950
    Abstract: A method of making a relief image printing element from a photosensitive printing blank is provided. The method comprising the steps of: 1) providing a photosensitive printing blank comprising a backing layer, at least one layer of photoresin on top of the backing layer and a removable coversheet on top of the at least one layer of photoresin; 2) imaging the photosensitive printing blank through the removable coversheet using a laser to create a relief image therein; and 3) removing the removable coversheet.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: August 5, 2014
    Inventors: Jonghan Choi, Chouaib Boukaftane, Kerry O'Brate
  • Patent number: 8790864
    Abstract: A method of tailoring the shape of a plurality of relief printing dots created in a photosensitive printing blank during a platemaking process is provided. The photocurable layer is exposed to actinic radiation using an array of UV LED light assemblies and the use of the array of UV LED light assemblies produces relief printing dots having at least one geometric characteristic selected from the group consisting of a desired planarity of a top surface of the relief printing dots, a desired shoulder angle of the relief printing dots and a desired edge sharpness of the relief printing dots.
    Type: Grant
    Filed: August 27, 2012
    Date of Patent: July 29, 2014
    Inventor: Kyle P. Baldwin
  • Patent number: 8790862
    Abstract: The invention provides a photosensitive element and a method for preparing a printing form from the element. The photosensitive element includes a layer of a photosensitive composition containing a binder, a monomer, and a Norrish type II photoinitiator, wherein the photosensitive layer has a transmittance to actinic radiation of less than 20% and contains reinforcing particles of graphene and/or carbon nanotubes.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: July 29, 2014
    Assignee: E I du Pont de Nemours and Company
    Inventor: Adrian Lungu
  • Patent number: 8771926
    Abstract: A method of preparing a photosensitive printing blank, the method comprising the steps of: a) coating a slip film onto a coversheet and drying the slip film; and depositing at least one layer of photosensitive material on top of the slip film coated coversheet and laminating a substrate layer to the exposed surface of the photosensitive material. The slip film comprises: i) a polymer selected from the group consisting of polystyrene and polyvinylpyrrolidone; ii) optionally, an additive. The slip film at least substantially eliminates the formation of hot spots during an analog plate making process.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: July 8, 2014
    Inventors: Kyle P. Baldwin, Miguel A. Barboza, Laurie A. Bryant, Jessica A. Elwell
  • Patent number: 8772740
    Abstract: A method of imaging a printing plate and curing the printing plate made of or having photo-curable material that includes an ablatable mask. In one embodiment, the method comprises imaging the ablatable mask with a first portion of imaging data to produce a partially imaged uncured plate. Imaging data includes the first portion and a second portion of imaging data. The method includes curing the partially imaged uncured plate using UV with a first set of parameters to produce a partially cured plate with a partially ablated mask thereon, the curing arranged for producing flat tops, imaging the partially ablated mask on the partially cured plate with the second portion of imaging data to produce a totally imaged partially cured plate, and curing the totally imaged partially cured plate with a second set of one or more curing parameters to produce a totally cured plate to produce round tops.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: July 8, 2014
    Assignee: Esko-Graphics Imaging GmbH
    Inventors: Thomas Klein, Wolfgang Sievers
  • Patent number: 8771925
    Abstract: A processing solution is used to provide flexographic relief printing plates. This solution includes diisopropylbenzene, and one or more organic co-solvents, at least one of which is an aliphatic dibasic acid ester. The processing solution may also include one or more alcohols as co-solvents.
    Type: Grant
    Filed: August 25, 2009
    Date of Patent: July 8, 2014
    Assignee: Eastman Kodak Company
    Inventors: Elsie A. Fohrenkamm, M. Zaki Ali, Michael B. Heller
  • Publication number: 20140162192
    Abstract: Negatives, and laminates containing negatives, for exposing liquid photopolymers in UV flexographic plate making are created by printing opaque images directly onto the protective or release cover films used in plate making processes. Combining negatives and cover films in this way eliminates two layers and two interfaces in the exposure process, reducing cost and improving quality. By bringing the negative images as close as possible to the liquid photopolymer, printed dots of “digital quality” are created.
    Type: Application
    Filed: February 9, 2014
    Publication date: June 12, 2014
    Applicant: CHEMENCE, INC.
    Inventor: John P. MANEIRA
  • Patent number: 8748082
    Abstract: A flexographic printing sleeve or plate is made by a method that includes providing a millable polyurethane, crosslinking the millable polyurethane, and forming a relief by at least laser engraving the crosslinked millable polyurethane. For example, crosslinking may be accomplished by a peroxide-based process or by a vulcanization process using sulfur. A relief in one example is formed by extruding the millable polyurethane, thermally crosslinking the polyurethane after the extrusion step and laser engraving the crosslinked millable polyurethane. A printing article is formed into the shape of a flat printing plate or a continuous in-the-round printing sleeve.
    Type: Grant
    Filed: June 25, 2013
    Date of Patent: June 10, 2014
    Assignee: Xiper Innovations, Inc.
    Inventor: Rustom S. Kanga
  • Publication number: 20140147791
    Abstract: The invention relates to a processing apparatus for processing a flexographic plate. The apparatus comprises a supporting unit for supporting a flexographic plate including a relief layer containing a photosensitive material, the plate further including, on the relief layer, a carbon layer that is impenetrable for UV light. The apparatus also comprises an optical system for locally ablating the carbon layer for forming a pattern in the carbon layer that is penetrable for UV light, and for polymerizing at least a top part of the relief layer under the carbon pattern layer. Thereto, the optical system includes a single radiation source for both locally ablating the carbon layer and for polymerizing at least a top part of the relief layer.
    Type: Application
    Filed: November 27, 2013
    Publication date: May 29, 2014
    Applicant: XEIKON I.P. B.V.
    Inventors: Dirk de Rauw, Bart Marc Luc Wattyn
  • Patent number: 8735049
    Abstract: A method of making a relief printing element in a liquid photopolymer platemaking process is described. The method comprises the steps of: (a) selectively exposing the liquid photopolymer to actinic radiation through a negative to crosslink and cure portions of the liquid photopolymer; and (b) reclaiming uncured portions of the liquid photopolymer to be reused in the platemaking process. The step of reclaiming uncured portions of the liquid photopolymer comprises (i) heating the printing element to decrease the viscosity of the uncured liquid photopolymer; and (ii) removing uncured liquid photopolymer from the surface of the relief image printing element so that recovery of uncured liquid photopolymer from the surface of the relief image printing element is enhanced.
    Type: Grant
    Filed: May 22, 2012
    Date of Patent: May 27, 2014
    Inventor: Ryan W. Vest
  • Publication number: 20140141378
    Abstract: A method of thermally developing a photocurable printing blank to produce a relief pattern comprising a plurality of relief dots. The photocurable printing blank comprises a backing layer having at least one photocurable layer disposed thereon and a laser ablatable mask layer disposed on top of the at least one photocurable layer.
    Type: Application
    Filed: December 20, 2013
    Publication date: May 22, 2014
    Applicant: MacDermid Printing Solutions, LLC
    Inventors: David A. Recchia, Joseph H. Blair, Ryan W. Vest