Resilient Layer (e.g., Printer's Blanket, Etc.) Patents (Class 428/909)
  • Patent number: 5553541
    Abstract: A tubular printing blanket for a blanket cylinder in an offset printing press comprises a cylindrical sleeve, a compressible layer over the sleeve, and an inextensible layer over the compressible layer. The cylindrical sleeve is movable telescopically over a blanket cylinder. The compressible layer comprises a first seamless tubular body of elastomeric material containing compressible microspheres. The inextensible layer comprises a second seamless tubular body of elastomeric material containing a tubular sublayer of circumferentially inextensible material. A seamless tubular printing layer over the inextensible layer has a continuous, gapless cylindrical printing surface. Methods of manufacturing the tubular printing blanket are also disclosed.
    Type: Grant
    Filed: September 29, 1993
    Date of Patent: September 10, 1996
    Inventors: James B. Vrotacoe, Glenn A. Guaraldi, James R. Carlson, Gregory T. Squires
  • Patent number: 5549967
    Abstract: A press fabric incorporating bicomponent material in fiber form or yarn form, the bicomponent material having a core material with a higher melting point surrounded by a covering material with a lower melting point. The bicomponent material will be present in the base fabric in yarn form and/or in the batt material in fiber form in amount ranging from 10-100%. Upon heatsetting the assembled press fabric structure, the lower melting point material of the bicomponent material becomes soft, flowing into the crossing of the batt fibers, if present in the batt material, or into the crossings of the weave pattern, if present in a base fabric, to form a matrix.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: August 27, 1996
    Assignee: Huyck Licensco, Inc.
    Inventor: Hippolit Gstrein
  • Patent number: 5549968
    Abstract: A composite fabric structure comprising a plurality of warp and fill fibers or yarns forming a fabric substrate which is impregnated with a matrix material which contains a plurality of cells which impart compressibility to the fabric substrate. This fabric may be used, for example, in a composite structure for use with one or more additional layers or coatings. Articles which may be formed from the composite structure include gaskets, packing materials, flexible diaphragms or printing blankets. In the printing blankets, one or more of a vulcanized rubber layer, a fabric layer and a compressible layer may be included.
    Type: Grant
    Filed: March 8, 1994
    Date of Patent: August 27, 1996
    Assignee: Reeves Brothers, Inc.
    Inventors: Joseph L. Byers, W. Toriran Flint, Richard C. Kerr
  • Patent number: 5538782
    Abstract: There is provided an offset blanket which is particularly superior in paper discharging properties at the time of printing, comprising a supporting layer and a surface printing layer provided on the supporting layer, and the surface printing layer is a rubber layer wherein a volume change .DELTA.V (%) and a tan .delta. satisfy a relation represented by the formula:tan .delta.<-0.0018.times..DELTA.V+0.34 (1)or a relation between a hardness Hs (IHRD) and a tan .delta. satisfy a relation represented by the formula:tan .delta.<-0.005.times.Hs+0.42 (3).
    Type: Grant
    Filed: August 2, 1995
    Date of Patent: July 23, 1996
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Seiji Tomono, Taketo Matsuki, Kazuhisa Fushihara
  • Patent number: 5522315
    Abstract: A printing article which includes a rotatable metal support in the form of a cylinder and a compressible laminate mounted upon the support. The compressible laminate has upper and lower surfaces and a substantially uniform thickness and includes a printing face which forms the upper surface and a compressible layer positioned beneath the printing face. The upper surface of the compressible layer is spaced closer to the upper surface of the printing face in the center of the cylindrical support than at the ends. Preferably, this laminate is cylindrical and is in the form of a printing blanket or printing roll. The invention also relates to a method for forming the compressible laminate.
    Type: Grant
    Filed: March 1, 1994
    Date of Patent: June 4, 1996
    Assignee: Reeves International
    Inventors: Richard L. Behnke, Vernon O. Bridges, W. Toriran Flint, Joseph L. Byers
  • Patent number: 5516074
    Abstract: A twin-type buffering or dampening pad is made from very tough rubber material. The pad is highly deformable and flexible and particularly suitable for installation between the foot board and the side frame of a running machine to absorb or dampen shock. The pad includes a pair of symmetrical cylinders integrally connected by a reinforced rib and arranged inverted relative to each other. Each of the cylinders has a flat surface at one end, which has a screw hole at the center and a convex or semi-spherical surface at the opposite end. The semi-spherical surface on one of the cylinders is flush at its apex with the adjacent flat surface on the other cylinder to simultaneously contact a face to efficiently absorb the shock produced from all directions by random stepping force when a user runs on the running machine.
    Type: Grant
    Filed: January 18, 1995
    Date of Patent: May 14, 1996
    Inventor: Michael Hung
  • Patent number: 5498470
    Abstract: A printing blanket which resists gauge loss throughout its useful life when subjected to printing nip pressures by retaining at least 95% of its original gauge throughout the useful life of the printing blanket. The printing blanket includes at least a printing surface layer and at least one reinforcing woven fabric ply and may also include a compressible layer. At least one, and preferably all, of the reinforcing woven fabric plies in the blanket construction are treated or fabricated to resist permanent deformation when subjected to printing nip pressures.
    Type: Grant
    Filed: July 23, 1992
    Date of Patent: March 12, 1996
    Assignee: Day International, Inc.
    Inventors: Michael E. McLean, Melvin D. Pinkston, Noel D. Arrington, Dennis R. Wolters, Allen T. Shannon, Thomas G. Ferguson, Graham Macfarlane, Chris Baldermann, John Dolan
  • Patent number: 5486402
    Abstract: A multi-ply laminated compressible printing blanket for use in offset printing comprising in order, a first compressible fabric ply, a compressible elastomeric layer, one or more additional fabric plies situated above the compressible elastomeric layer, an elastomeric subface, and an elastomeric printing face deposited by a solventless process and having a surface profile adapted for reducing dot gain while enhancing the releasability of the printed matter. The lowermost fabric ply may incorporate a protective coating to prevent wicking of inks, water, and/or solvents through the blanket which might otherwise lead to swelling and delamination of the various plies. In addition, both the fabric plies and the compressible layer may be coated with a matrix material having dispersed therein a plurality of closed cells formed, e.g., with the use of blowing agents or by adding thereto a plurality of expanded or expandable microspheres.
    Type: Grant
    Filed: October 12, 1994
    Date of Patent: January 23, 1996
    Assignee: Reeves Brothers, Inc.
    Inventors: W. Toriran Flint, Joseph L. Byers
  • Patent number: 5478638
    Abstract: A reinforced conveyor belt especially suited to transport sharp objects such as glass and scrap metal. The belt has a top and bottom layer of flexible, abrasion-resistant material, such as rubber. There is a middle layer of woven, multi-layered fabric, preferably made of cotton threads with reinforcing rods interwoven therein. The reinforcement rods run transversely and occupy sites in the intermediate layers of the fabric normally occupied by weft threads. Interweaving the layers of fabric and inserting the rod into one of the intermediate fabric layer provides the belt with tensile strength, puncture resistance, and a barrier against longitudinal tearing. Finally, the bottom surface of the belt is textured to provide additional durability and traction.
    Type: Grant
    Filed: July 15, 1994
    Date of Patent: December 26, 1995
    Inventors: Gary B. Springer, John E. Hayes, Jr.
  • Patent number: 5478637
    Abstract: The offset blanket of the present invention has a structure comprising no reinforcing layer between its compressive layer and its surface printing layer. The surface printing layer has a thickness in the range of 5 to 20% based on the thickness of the whole blanket, and a hardness of the rubber which constitutes the surface printing layer which is in the range of 40.degree. to 70.degree. Type A, JIS K 6301. The compressive layer has a foam content (void volume) in the range of 30 to 60% and a thickness in the range of 10 to 30% based on the thickness of the whole blanket and a hardness of the rubber matrix constituting the compressive layer which is in the range of 40.degree. to 80.degree. Type A, JIS K 6301. Therefore, the offset blanket of the present invention is superior in paper feeding properties. Further, misregistry can be inhibited and solid inking properties are not deteriorated.
    Type: Grant
    Filed: May 31, 1994
    Date of Patent: December 26, 1995
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Seiji Tomono, Toshikazu Ogita, Toshio Kamada, Tetsuya Fuchikami
  • Patent number: 5456171
    Abstract: A belt-shaped element for printing textiles. The belt is a sandwich structure shaped to conform around two textile printing machine cylinders, and operative to move fabric articles thereon past printing stations with minimal registration error. An exemplary belt has at least one outer elastomer layer, or "working layer," and an inner "cylinder" layer that is innermost against the printing machine cylinders. An exemplary cylinder layer comprises a sheet of fibers oriented longitudinally and having a rigidity of 10.sup.6 -10.sup.7 megapascals in the longitudinal direction. Other exemplary belts comprise an intermediate layer between the outer elastomer and inner fiber sheet layers. An exemplary intermediate layer comprises a layer of transverse fibers.
    Type: Grant
    Filed: October 20, 1994
    Date of Patent: October 10, 1995
    Assignee: Rollin S.A.
    Inventors: Helene Biava, Denis Hertzog, Christian Reinhart, Gerard Rich, Jean-Francois X. A. Van Den Bogaert
  • Patent number: 5440981
    Abstract: A tubular printing blanket for a blanket cylinder in an offset printing press comprises a cylindrical sleeve, a compressible layer over the sleeve, and an inextensible layer over the compressible layer. The cylindrical sleeve is movable telescopically over a blanket cylinder. The compressible layer comprises a first seamless tubular body of elastomeric material containing compressible microspheres. The inextensible layer comprises a second seamless tubular body of elastomeric material containing a tubular sublayer of circumferentially inextensible material. A seamless tubular printing layer over the inextensible layer has a continuous, gapless cylindrical printing surface. Methods of manufacturing the tubular printing blanket are also disclosed.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: August 15, 1995
    Assignee: Heidelberg Harris, Inc.
    Inventors: James B. Vrotacoe, Glenn A. Guaraldi, James R. Carlson, Gregory T. Squires
  • Patent number: 5431989
    Abstract: The present invention relates to an elastic and compressible printing blanket element.This element essentially comprises a lithographic or printing layer (1), a hard layer of elastomer (2), a layer of cellular rubber (3), a layer of fabric (4) and another layer (5) of cellular rubber forming a base layer and the modulus of elasticity in compression of which is identical with or smaller than the modulus of elasticity of the layer (3).This printing element or blanket is applicable in any types of offset printing machines.
    Type: Grant
    Filed: September 27, 1993
    Date of Patent: July 11, 1995
    Assignee: Rollin S.A.
    Inventors: Michel Beltzung, Bertrand Felly
  • Patent number: 5400707
    Abstract: A hot soft nip calender apparatus is provided for a paper mill. The apparatus includes at least one heated calender roller and a finishing belt which is moved in proximity to the heated calender roller by a plurality of drive rollers and at least one pressure roller. Thus, a heated calender nip is defined between the heated calender roller and the finishing belt. A web of paper is passed through the nip, such that one surface of the web of paper is contacted by the heated calender roller, while the opposed surface of the web is contacted by the finishing belt. The finishing belt has an extremely smooth surface for contacting the web of paper so as to impart appropriate smoothness and gloss characteristics to that surface. The finishing belt can readily be changed when worn or damaged or to alter the characteristics being imparted to a web of paper.
    Type: Grant
    Filed: April 1, 1994
    Date of Patent: March 28, 1995
    Assignee: Champion International Corporation
    Inventors: Thomas M. Neider, Robert J. Rudt
  • Patent number: 5391419
    Abstract: A press fabric for use on papermaking and similar machines is of the open-ended variety, and has loops at each end enabling it to be closed into endless form during installation on the machine by means of a pin seam. The machine-direction (MD) yarns, from which the loops are formed during the flat or endless weaving of the fabric, are composite yarns having a core yarn with a sleeve-like coating. The coating, either permanent, semi-permanent, or soluble, gives the composite yarn a monofilament-like structure enabling good loop formation and stability. The use of multifilament yarn as the core yarn provides a fabric having improved elasticity in the machine direction, and a greater degree of resiliency, following the removal of a soluble coating material, than can be obtained using monofilament yarn.
    Type: Grant
    Filed: April 24, 1992
    Date of Patent: February 21, 1995
    Assignee: Albany International Corp.
    Inventor: Francis L. Davenport
  • Patent number: 5385774
    Abstract: A roof material for motor vehicles includes an upper fabric, a lower fabric and a rubber layer arranged between them. The upper fabric includes polyacrylonitrile warp and filling threads. The warp threads are endless filaments (multifilaments). The upper fabric has a protective, polymeric coating on its top side. The rubber layer includes two rubber layers with an intermediate layer of high-strength material.
    Type: Grant
    Filed: January 16, 1990
    Date of Patent: January 31, 1995
    Assignee: Gebr. Happich GmbH
    Inventors: Johannes Cramer, Erwin Winterberg, Hans Nockemann
  • Patent number: 5366784
    Abstract: Method of inhibiting corrosion of blanket cylinders used in offset printing operations, in which zinc is applied to the surfaces of printing blankets which contact the blanket cylinders, by application of zinc powder to an adhesive layer, or by impregnating zinc particles into the surface of the printing blanket, or by weaving zinc threads into the material of the printing blanket, or by attaching zinc foil to the printing blanket; together with printing blankets so prepared. The zinc acts to inhibit electrochemical corrosion and rusting of the blanket cylinder steel, by virtue of the fact that zinc is a sacrificial metal which is more chemically active than the iron in the steel, and is therefore oxidized in lieu of the iron.
    Type: Grant
    Filed: February 3, 1993
    Date of Patent: November 22, 1994
    Inventor: Paul R. Herbison
  • Patent number: 5366799
    Abstract: A printing blanket which requires no packing when installed and which has a nontextured, substantially smooth and low abrasion base surface contacting the blanket cylinder so that the pressures to which the blanket is subjected are spread substantially over the entire surface of the blanket in contact with the blanket cylinder is provided. The laminated printing blanket construction includes at least one base ply and a surface layer. The exterior surface of the base ply is coated with an elastomer to provide the substantially smooth surface. The blanket eliminates mechanical abrasion of the blanket cylinder surface with which it is in contact.
    Type: Grant
    Filed: November 30, 1992
    Date of Patent: November 22, 1994
    Assignee: Day International, Inc.
    Inventors: Melvin D. Pinkston, Stephen B. Edwards
  • Patent number: 5364683
    Abstract: A multi-ply laminated compressible printing blanket for use in offset printing comprising in order, a first compressible fabric ply, a compressible elastomeric layer, at least two additional fabric plys situated above the compressible elastomeric layer, an elastomeric subface and an elastomeric printing face deposited by a solventless process and having a surface profile adapted for reducing dot gain while enhancing the releasability of the printed matter. At least the lowermost fabric ply incorporates a protective coating to prevent wicking of inks, water and/or solvents through the blanket which might otherwise lead to swelling and delamination of the various plys. In addition, both the fabric plys and the compressible layer are at least partially coated with a matrix material having dispersed therein a plurality of closed cells formed, e.g., with the use of blowing agents or by adding thereto a plurality of expanded or expand microspheres.
    Type: Grant
    Filed: February 14, 1992
    Date of Patent: November 15, 1994
    Assignee: Reeves Brothers, Inc.
    Inventors: W. Toriran Flint, Joseph L. Byers
  • Patent number: 5356693
    Abstract: The present invention provides an offset blanket for printing having a supporting layer and a surface printing layer laminated on the supporting layer. The surface printing layer has a surface configuration in which the mean peak distance is controlled so that good paper discharging properties can be maintained.
    Type: Grant
    Filed: December 17, 1992
    Date of Patent: October 18, 1994
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Seiji Tomono, Yasuhiko Kondo, Tetsuya Fuchikami, Hisao Kagano
  • Patent number: 5352507
    Abstract: A novel multilayered sleeve-like printing blanket is mountable on gapless cylinders or tubular blanket carriers, thereby minimizing vibration when operated at high rotational speeds. An exemplary printing blanket comprises a seamless outer printing surface layer; at least one reinforced elastomer layer, the elastomer layer being reinforced by fibers substantially parallel with the inward and outward sides of the cylindrical tube defined by the reinforced elastomer layer; and a resiliently compressible layer. The oriented fibers reinforce the elastomer layer such that the modulus of elasticity in the circumferential direction of rotation is increased. Exemplary methods for forming one or more of the layers are also disclosed herein.
    Type: Grant
    Filed: March 3, 1993
    Date of Patent: October 4, 1994
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Michel Bresson, David Beckerman, Claude Berna, Christian Chesneau, Jean P. Jenny, Dennis D. O'Rell, Herve Praet, Gerard Rich, Jean P. Stutz
  • Patent number: 5350623
    Abstract: A void-free, latex rubber cushion layer is interposed between the blanket cylinder and the base layer of a compressible printing blanket in an offset printing press. The latex cushion layer has a thickness of from 8 to 12 mils, and has a spring modulus which is substantially less than the spring modulus of the compressible layer in the printing blanket. The latex cushion layer will compress slightly, about 1 mil, in response to preloading at typical preload impression pressure. This means that a good quality print may be obtained at a substantially reduced impression pressure level, since it is not necessary to preload the blanket. During a printing operation, the latex cushion layer is under preload compression and applies a back pressure force which assures a quality imprint. The compressible layer of the blanket, which has a greater spring constant, is not compressed at the typical printing pressure setting.
    Type: Grant
    Filed: September 21, 1992
    Date of Patent: September 27, 1994
    Inventor: Steven L. Derrick
  • Patent number: 5334418
    Abstract: A composite fabric structure comprising a plurality of warp and fill fibers or yarns forming a fabric substrate which is impregnated with a matrix material which contains a plurality of cells which impart compressibility to the fabric substrate. This fabric may be used, for example, in a composite structure for use with one or more additional layers or coatings. Articles which may be formed from the composite structure include gaskets, packing materials, flexible diaphragms or printing blankets. In the printing blankets, one or more of a vulcanized rubber layer, a fabric layer and a compressible layer may be included.
    Type: Grant
    Filed: September 3, 1993
    Date of Patent: August 2, 1994
    Assignee: Reeves Brothers, Inc.
    Inventors: Joseph L. Byers, W. Toriran Flint, Richard C. Kerr
  • Patent number: 5325776
    Abstract: An improved cushioning backing sheet material to be positioned between a flexographic printing cylinder and a flexible printing plate is provided. The backing sheet material has a uniform thickness of about 30 to 60 mils and a density greater than 40 pounds per cubic foot. The backing is sufficiently deformable to experience a reduction in thickness of 6 to 9 percent when subjected to a compressive force of 45 psi and has a resiliency sufficient to recover at least 99.5 percent of its original thickness within 0.1 second after the compressive force is removed.
    Type: Grant
    Filed: August 25, 1993
    Date of Patent: July 5, 1994
    Inventors: Thomas K. Rather, Sr., Kathyrn E. Rather
  • Patent number: 5323702
    Abstract: A tubular printing blanket for a blanket cylinder in an offset printing press comprises a cylindrical sleeve, a compressible layer over the sleeve, and an inextensible layer over the compressible layer. The cylindrical sleeve is movable telescopically over a blanket cylinder. The compressible layer comprises a first seamless tubular body of elastomeric material containing compressible microspheres. The inextensible layer comprises a second seamless tubular body of elastomeric material containing a tubular sublayer of circumferentially inextensible material. A seamless tubular printing layer over the inextensible layer has a continuous, gapless cylindrical printing surface. Methods of manufacturing the tubular printing blanket are also disclosed.
    Type: Grant
    Filed: July 10, 1992
    Date of Patent: June 28, 1994
    Assignee: Heidelberg Harris Inc.
    Inventors: James B. Vrotacoe, Glenn A. Guaraldi, James R. Carlson, Gregory T. Squires
  • Patent number: 5294481
    Abstract: A printing blanket including a base fabric and a surface layer in a laminated structure wherein a surface reforming agent containing a perfluoroalkyl group is applied to the surface layer such that a critical surface tension ranging from 10 to 16 dyn/cm appears on the surface of the surface layer is disclosed. To practically manufacture a printing blanket of the foregoing type, there is also disclosed a method wherein a compressible layer is placed on a base fabric, a surface layer is then placed on the compressible layer thereby to form a laminated structure with the base fabric and the compressible layer, and thereafter, a surface modifier containing a perfluoroalkyl group is applied to the surface layer such that a critical surface tension ranging from 10 to 16 dyne/cm appears on the surface of the surface layer. It is preferable that the surface layer is molded of a compound based on a nitrile butadiene rubber.
    Type: Grant
    Filed: December 27, 1991
    Date of Patent: March 15, 1994
    Assignee: Fujikura Rubber Ltd.
    Inventors: Takato Nakamura, Takao Kawata, Tsukasa Fukuma, Yasunobu Kobayashi
  • Patent number: 5264289
    Abstract: The printing offset blanket in accordance with the present invention has a surface printing layer made of a mixture of silicone rubber and oil-resisting rubber. It is therefore possible to prepare ink layers having a uniform thickness and clear edges. Further, the present offset blanket can be improved in paper discharging properties and retention of paper powder, enabling the blanket to be suitably applied to high-speed printing, filter or display prints, or the like. The printing rubber roll of the present invention is made of a mixture of silicone rubber and oil-resisting rubber. Accordingly, the present rubber roll is excellent in stability with respect to ultraviolet-curing ink and can therefore be used for a long period of time.
    Type: Grant
    Filed: December 2, 1991
    Date of Patent: November 23, 1993
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Yasuhiko Kondo, Seiji Tomono, Toshikazu Ogita, Toshio Kamada, Tsuneo Masuda, Tetsuya Fuchikami
  • Patent number: 5245923
    Abstract: An offset printing unit (10) for printing an inked image on sheet material (30) comprises a rotatable plate cylinder (12) and a rotatable blanket cylinder (14). The plate cylinder (12) supports a printing plate (18) which defines the inked image. A tubular printing blanket (20) is received telescopically over the blanket cylinder (14). The printing unit (10) further comprises a frame (16) and a motor (26). The frame (16) supports the plate cylinder (12) and the blanket cylinder (14) in positions for the printing plate (18) to transfer the inked image onto the tubular printing blanket (20) at a nip (28) between the cylinders (12, 14) when the cylinders (12, 14) are rotating. The motor (26) rotates the plate cylinder (12) and the blanket cylinder (14) to transfer the inked image to the tubular printing blanket (20).
    Type: Grant
    Filed: July 7, 1992
    Date of Patent: September 21, 1993
    Assignee: Heidelberg Harris Inc.
    Inventor: James B. Vrotacoe
  • Patent number: 5234762
    Abstract: A duplicating, printing or recording surface is produced by attaching a strip (10) of magnetic or other web material to a support such as a drum (20) or flat support element provided with a layer (22) of low durometer elastomer, the strip of material and the elastomeric material being mutually adherent. With the strip of material wrapped circumferentially around the drum, a sharp knife is used to cut the magnetic material and form a precise butt joint (35,36), diagonal or straight, with a minimal gap. The strip of material forms a secure bond with the low durometer elastomeric layer because of the inherent mutual adherence between the two materials, without the need for an intervening adhesive material. A compliant magnetic drum of this type has a low radial stiffness and a high circumferential stiffness which are well suited for a master recording drum in an anhysteretic duplicating apparatus.
    Type: Grant
    Filed: November 14, 1991
    Date of Patent: August 10, 1993
    Assignee: Eastman Kodak Company
    Inventor: Thomas W. Palone
  • Patent number: 5205213
    Abstract: The present invention relates to a cylinder covered with a printing blanket. According to the invention the layered structure of the blanket is such that the blanket is held onto the cylinder while fully surrounding this cylinder without any gap in the manner of a sleeve. This cylinder together with the printing sleeve is applicable in any type of offset printing machine.
    Type: Grant
    Filed: April 8, 1991
    Date of Patent: April 27, 1993
    Inventor: Michel Bresson
  • Patent number: 5204150
    Abstract: This disclosure describes a press fabric for use on papermaking and similar machines. The fabric is of the open-ended variety, and has loops at each end enabling it to be closed into endless form during installation on the machine by means of a pin seam. The machine-direction (MD) yarns, from which the loops are formed during the flat or endless weaving of the fabric, are coated multifilaments. The coating, either permanent, semi-permanent, or soluble, gives the multifilament a monofilament-like structure enabling good loop formation and stability. The use of multifilament yarn provides a fabric having improved elasticity in the machine direction, and a greater degree of compressibility, following the removal of a soluble coating material, than can be obtained using monofilament yarn.
    Type: Grant
    Filed: August 17, 1989
    Date of Patent: April 20, 1993
    Assignee: Albany International Corp.
    Inventor: Francis L. Davenport
  • Patent number: 5188031
    Abstract: A printing blanket cylinder assembly (14', 16') with an exposed edge (60) at the end of an inwardly turned mounting member (30M, 34M) protectively enclosed within a mounting slot (32) within a blanket cylinder (16) while an outer layer (40) of the blanket (34) is protectively wrapped around a leading edge (30D) of a metal backing plate (30) to both protect intermediate layers (44, 48) of the blanket (34) and the bonds therebetween from the deleterious effects of dampening liquid while concurrently providing a gap (56) of preselected size to achieve a stress-free boundary for the blanket (34) on opposite sides of the gap (56) for optimal vibration reduction.
    Type: Grant
    Filed: June 27, 1991
    Date of Patent: February 23, 1993
    Assignee: Rockwell International Corporation
    Inventors: Louis S. Depa, Robert L. Fisher
  • Patent number: 5173361
    Abstract: A fiber reinforced composite belt in which a stainless steel fiber aggregate having a diameter of from 5 to 50 .mu.m and impregnated with 1 to 10% by weight of a thermosetting resin such as an epoxy resin is buried as a reinforcing material in a base material for belt, and a process for preparing the above-mentioned fiber reinforced composite belt are provided. This fiber reinforced composite belt is much more excellent in flex resistance, durability, water resistance and coefficient of linear expansion, as compared with not only a rubber belt and a synthetic resin elastomer belt but also belts reinforced by directly burying a stainless steel fiber and a steel fiber in the rubber.
    Type: Grant
    Filed: January 17, 1991
    Date of Patent: December 22, 1992
    Assignees: Nippon Steel Chemical Co., Tsubakimoto Chain Co.
    Inventors: Hiroaki Yamashita, Takashi Toyota
  • Patent number: 5136968
    Abstract: An ink dispensing device is disclosed wherein the ink releasing member comprises two layers that serve different purposes. The layer which contacts a printing font is made of a porous material that has an open pore size of less than 30 microns and a porosity of 40% to 85%. The second layer is adjacent to the contact layer and is made from an elastic foam with larger pore size, in the range of 80 microns to 1000 microns and a porosity of greater than 70%. The second layer is impregnated with ink and acts as a reservoir for the first layer, the latter serving as a metering member.
    Type: Grant
    Filed: January 2, 1990
    Date of Patent: August 11, 1992
    Assignee: Pitney Bowes Inc.
    Inventors: Thyagaraj Sarada, Judith D. Auslander, Richard Bernard
  • Patent number: 5131326
    Abstract: A cover mounting (10) for a printing press (14) having a rotatably mounted roll (12) having an elongated lateral recess (16) extending from an outer surface (18) of the roll (12), a bracket (20) having a pair of outwardly directed flanges (22) and (24) in said recess (16), and a blanket (30) for covering said roll (12), said blanket (30) having a pair of clips (44) and (46) adjacent opposed ends of the blanket (30), with each of said clips (44) and (46) having a pair of opposed spaced resilient clipping members (48) and (50) for placement on each of the bracket flanges (22) and (24) in said recess (16).
    Type: Grant
    Filed: August 19, 1991
    Date of Patent: July 21, 1992
    Assignee: Rockwell International Corporation
    Inventor: Alvin J. Wrzesinski
  • Patent number: 5122411
    Abstract: An electrostatic recording material comprising a conductive having on at least one side thereof an electroconductive layer and a recording layer in this order is disclosed, wherein said support is made of fabric having a weaving density of at least 30 yarns/cm and a weaving interstice of not more than 150 .mu.m. The recording material exhibits satisfactory recording characteristics and excellent durability, while having a feeling inherent to the fabric.
    Type: Grant
    Filed: August 1, 1990
    Date of Patent: June 16, 1992
    Assignee: Tomoegawa Paper Co., Ltd.
    Inventors: Kiyoshi Iwamoto, Tomio Oki, Yoshiaki Kaburaki, Keno Kamimura
  • Patent number: 5116669
    Abstract: The compressible rubber blanket for offset printing of the present invention is characterized by making the thickness of the solid rubber layer 0.25 mm or greater and setting the ratio of the thicknesses of the surface rubber layer, compressible layer and solid rubber layer to predetermined one, whereby it is enabled to be excellent in printability, to make reduction in the thickness during printing less, to be excellent in the action of absorbing a shock such as a mechanical impact, and to prevent the material to be printed from winding around the blanket cylinder. And, the blanket applies to printing machines such as sheet-fed offset presses, offset rotary presses and perfecting presses, and it is suitable for printing of coated papers, carton boards and the like.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: May 26, 1992
    Assignee: Kinyosha Co., Ltd.
    Inventor: Saburo Sonobe
  • Patent number: 5069958
    Abstract: A printing blanket having a printing face, a compressible body of material below the printing face and at least one body or reinforcing layer adjacent the compressible layer. The reinforcing layer is a woven fabric having air textured polyester warp and fill yarns therein.
    Type: Grant
    Filed: May 29, 1990
    Date of Patent: December 3, 1991
    Assignee: Milliken Research Corporation
    Inventor: Alonzo M. Burns, Jr.
  • Patent number: 5066537
    Abstract: The present invention relates to improved compressible, offset printing blankets suitable for use on high speed web processors. These blankets have improved resistance to fall-off at the gap and also have improved resistance to surface piping subsequent to reverse rolling of the blanket. The instant printing blanket comprises a carcass layer, a compressible layer overlaying the carcass layer, a stabilizing layer overlaying the compressible layer and an ink transfer layer upon the compressible layer, wherein the stabilizing layer is formed of a fabric having a plurality of continuous filament synthetic warp yarns, preferably nylon or polyester, following a sinusoidal path over and under the weft yarns.
    Type: Grant
    Filed: October 4, 1990
    Date of Patent: November 19, 1991
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Dennis O'Rell, Parviz Hamed, Thomas C. DiPerna
  • Patent number: 5049432
    Abstract: An improved microporous marking structure has a layer of a microporous material containing a marking fluid and an absorbent backing layer superposed thereon which shortens processing time by absorbing excess marking fluid from the microporous layer. The marking structure according to the invention may be advantageously used to make a self-inking hand stamp. No lengthy step for removing excess ink from the microporous layer is needed.
    Type: Grant
    Filed: May 2, 1990
    Date of Patent: September 17, 1991
    Assignee: Porelon, Inc.
    Inventors: Willem Ooms, Frank R. Moss, Jonnie L. Key, Robert E. Ponter, David L. Hedgecoth
  • Patent number: 5045891
    Abstract: An image fixing apparatus in which a recording material having an unfixed image through a nip formed between rotatable rollers. At least one of the rollers is provided with a surface layer containing straight-needle like single-crytal fibers.
    Type: Grant
    Filed: February 3, 1988
    Date of Patent: September 3, 1991
    Assignees: Canon Kabushiki Kaisha, Sumitomo Electric Ind., Inc.
    Inventors: Hisaaki Senba, Michio Shigenobu, Toshiyuki Hatta, Masaya Nishi
  • Patent number: 5034268
    Abstract: An offset blanket comprising, in lamination, a surface printing layer, a support layer for supporting the surface printing layer and a porous primer layer for bonding the surface printing layer and the support layer. The primer layer is porous to improve the peeling properties and the shock absorbing properties thereof.
    Type: Grant
    Filed: August 9, 1990
    Date of Patent: July 23, 1991
    Assignee: Sumitomo Rubber Industries, Ltd.
    Inventors: Fumio Sekidou, Yasuhiko Kondou, Toshikazu Ogita, Hisao Kagano
  • Patent number: 5006400
    Abstract: A unitary printing blanket construction which requires no packing when installed and which has a nontextured, low abrasion base surface contacting the blanket cylinder so that the pressures to which the blanket is subjected are spread substantially over the entire surface of the blanket in contact with the blanket cylinder is provided. The laminated printing blanket construction includes at least one base ply and a surface layer laminated to one surface thereof. The opposite surface of the base ply is substantially nontextured such that, when mounted on a blanket cylinder, the pressures to which the blanket is subjected are spread substantially over the entire surface of the blanket in contact with the cylinder. The printing blanket is particularly useful when used in conjunction with a metal-plated blanket cylinder.
    Type: Grant
    Filed: December 9, 1988
    Date of Patent: April 9, 1991
    Assignee: Day International
    Inventors: Melvin D. Pinkston, Andrew J. Gaworowski, Stephen B. Edwards
  • Patent number: 4981750
    Abstract: A printing blanket having excellent lateral stability comprised of a carcass formed of one or more layers of woven fabric with low machine direction elongation characteristics, a nonwoven fabric attached to an upper surface of the lower most woven fabric layer, a compressible layer secured to the upper surface of the carcass and an ink transfer layer imposed upon the upper surface of the compressible layer. The blanket having a carcass containing a nonwoven layer comprised of continuous or discontinuous filaments, displays excellent cross machine direction elongation stability.
    Type: Grant
    Filed: January 23, 1989
    Date of Patent: January 1, 1991
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Edward T. Murphy, Dennis D. O'Rell
  • Patent number: 4943467
    Abstract: The invention relates to a printing plate for corrugated board which comprises a rubber or plastic foam sheet having a smooth skin layer on its surface, the thickness of the skin layer being 0.3 to 2.0 mm and the surface hardness of the printing plate is SRIS (C) 35 to 55. Preferably, the surface roughness of the skin layer is not more than JIS R.sub.max =100 .mu.m. Preferably, the printing plate further includes a reinforcing sheet comprising a base cloth and a rubber or resin cladding layer disposed on either side thereof and the interface between the foam sheet and one surface of the base cloth of the reinforcing sheet is separably bonded with comparatively weak adhesion.
    Type: Grant
    Filed: December 23, 1988
    Date of Patent: July 24, 1990
    Assignee: Kureha Rubber Industry Co., Ltd.
    Inventor: Inoue Shuji
  • Patent number: 4927695
    Abstract: An improved microporous marking structure has a layer of a microporous material containing a marking fluid and an absorbent backing layer superposed thereon which shortens processing time by absorbing excess marking fluid from the microporous layer. The marking structure according to the invention may be advantageously used to make a self-linking hand stamp. No lengthy step for removing excess ink from the microporous layer is needed.
    Type: Grant
    Filed: June 6, 1989
    Date of Patent: May 22, 1990
    Assignee: Porelon, Inc.
    Inventors: Willem Ooms, Frank R. Moss, Jonnie L. Key, Robert E. Ponter, David L. Hedgecoth
  • Patent number: 4910074
    Abstract: A prelaminate for safety glass comprising a plastic film and an intermediate layer laminated thereon, wherein the intermediate layer is made of a thermosetting or photosetting resin composition comprising an ethylene-vinyl acetate copolymer and a heat curing agent or photosensitizer.
    Type: Grant
    Filed: July 15, 1986
    Date of Patent: March 20, 1990
    Assignee: Asahi Glass Company Ltd.
    Inventors: Satoru Fukawa, Koji Kurita, Masayuki Miwa
  • Patent number: 4833012
    Abstract: A fiber entanglement is provided which is characterized in that it is a three-dimensional entanglement comprising elastic fibers (A) each being a fine-denier fiber bundle or exhibiting porous fiber structure as seen on a fiber cross section with a number of irregularly-shaped pores extending in the fiber axis direction; nonshrinkable, nonelastic fibers (B); and shrinkable, nonelastic fibers (C); said fibers (A) are at least partially bonded or fused together at various points of contact with one another and, thereby, produce a taut condition; said nonshrinkable, nonelastic fibers (B) are folded several times over by means of the elastic fibers (A) and the shrinkable, nonelastic fibers (C). This fiber entanglement is useful as a base material for leather-like sheet materials.
    Type: Grant
    Filed: July 1, 1987
    Date of Patent: May 23, 1989
    Assignee: Kuraray Co., Ltd.
    Inventors: Masaru Makimura, Kunio Kogame
  • Patent number: 4817527
    Abstract: A blanket for offset lithographic printing is bonded to a carrier plate for use in a press with magnetic cylinders.
    Type: Grant
    Filed: March 6, 1986
    Date of Patent: April 4, 1989
    Assignee: R.R. Donnelley & Sons Company
    Inventors: Gerald L. Wouch, Gary Procknow
  • Patent number: 4812357
    Abstract: A printing blanket having excellent dimensional stability, compressibility and web feed properties comprising a carcass, a compressible layer overlaying the carcass, a stabilizing layer of thermoplastic reinforced elastomer overlying the compressible layer and a printing surface layer of void free rubber. The thermoplastic reinforced elastomer is formed of fibers or fibriles of thermoplastic dispersed throughout the elastomer. Preferably the thermoplastic is molten when mixed with the elastomer in order to provide very fine, well dispersed fibriles.
    Type: Grant
    Filed: September 23, 1988
    Date of Patent: March 14, 1989
    Assignee: W. R. Grace & Co.-Conn.
    Inventors: Dennis D. O'Rell, Peter M. Holleran