Stripping Process Or Element Patents (Class 430/256)
  • Patent number: 5759751
    Abstract: A semiconductor manufacturer peels a photo-resist mask off by using organic alkaline solvent, and the residual alkaline solvent is neutralized with acid before a rinse in pure water so as to prevent a metal wiring from erosion due to strong alkaline solution produced from the residual organic alkaline solvent.
    Type: Grant
    Filed: February 6, 1997
    Date of Patent: June 2, 1998
    Assignee: NEC Corporation
    Inventors: Yuji Shimizu, Kohiro Ito, Masashige Moritoki
  • Patent number: 5741620
    Abstract: Reactive polymeric dyes are provided comprising a chromophoric moiety derived from at least one free radically polymerizable dye and an azlactone moiety derived from 2-alkenylazlactone such that the free radically polymerizable dye is incorporated into the backbone of the polymer. Alternatively, 2-alkenylazlactone is polymerized and then derivatized with a nucleophilic dye or dyes, such that the chromophoric potion of the dye is pendent to the polymer backbone. Both types of reactive polymeric dyes may also contain additional polymerized monomeric units. The reactive polymeric dyes of the present invention can be used in a photoresist system and in particular in a color proofing construction.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: April 21, 1998
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Gary L. Holmes, Terrance P. Smith, Mahfuza B. Ali, David W. Macomber
  • Patent number: 5741621
    Abstract: A process for preparing an image on a substrate by applying a photoimageable composition on a first substrate, wherein the photoimageable composition, having a solids content from 25 to 60 weight percent, contains a partially neutralized acid-containing polymer formed from a precursor polymer having an acid number from 90 to 160 prior to neutralization and wherein 1 to 15% of acid-containing groups of the precursor polymer are neutralized with base; an ethylenically unsaturated monomer; a photoinitiator or photoinitiating system, water; 0-5% by weight a solution polymer, based on the weight of total polymer present in the composition; and 0-25% by weight of an organic solvent based on the total weight of the organic solvent and water; wherein the liquid composition is present as a stable emulsion, and wherein the liquid composition has a Brookfield viscosity, at 25.degree. C.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: April 21, 1998
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Richard Joseph Kempf, John Haetak Choi, Harvey Walter Taylor, Jr.
  • Patent number: 5731263
    Abstract: A heat sensitive ink sheet has a heat sensitive ink layer which is formed of a heat sensitive ink material comprising colored pigment and thermoplastic resin such as amorphous organic polymer. An image receiving sheet having a support sheet and an image receiving layer thereon, the support sheet of the image receiving sheet being a porous sheet made of plastics which have fine pores therein. An image forming method is conducted by using the heat sensitive ink sheet and an image receiving sheet by area gradation by the use of a thermal head or laser beam.
    Type: Grant
    Filed: April 25, 1996
    Date of Patent: March 24, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Mikio Totsuka, Toshiharu Tanaka, Yonosuke Takahashi, Shinichi Yoshinari
  • Patent number: 5719005
    Abstract: A method is disclosed for the the formation of a photo mode image based on a the introduction on exposure of a difference of tackiness in a photosensitive layer which contains a reducible silver salt such as silver behenate. After exposure the still tacky parts selectively take up a reactive toner containing a reducing agent. By means of a heat post-treatment density is built up by reduction of the organic silver salt. This density can be increased by the presence in the toner of a pigment, preferable carbon black. In this way high maximal densities can be obtained. In a preferred embodiment the difference in tackiness is introduced by image-wise photopolymerization of a monomer also present in the photosensitive layer.
    Type: Grant
    Filed: December 12, 1995
    Date of Patent: February 17, 1998
    Assignee: AGFA-Gevaert, N.V.
    Inventors: Luc Leenders, Eddie Daems
  • Patent number: 5714303
    Abstract: The present invention provides new image forming methods. The image forming methods use a combination of a light-sensitive material and an image receiving material. The light-sensitive material comprises a support, a strippable layer and a light-sensitive polymerizable layer in order. The light-sensitive polymerizable layer contains silver halide, a reducing agent and an ethylenically unsaturated polymerizable compound or a cross-linkable polymer. The light-sensitive polymerizable layer may further contain a colorant. An image forming method using the light-sensitive polymerizable layer containing no colorant comprises an exposing step, a developing step, a toning step and a transferring step. Another image forming method using the colorant-containing light-sensitive polymerizable layer comprises an exposing step, a developing step, a removing step and a transferring step.
    Type: Grant
    Filed: November 25, 1996
    Date of Patent: February 3, 1998
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroaki Yokoya, Koji Shirakawa
  • Patent number: 5714305
    Abstract: A thermally-activatable overcoat-releasing laminate useful for the application of a protective overcoat onto a planar surface, such as a binary image surface on a peel-developed laminar imaging medium, is provided. The overcoat-releasing laminate comprises a durable layer and an adhesive layer firmly interconnected at an interface, the firm interconnection being resultant of polymerization of a photopolymerizable monomer by exposure to ultraviolet radiation. As effected by the firm interconnection, use of the overcoat-releasing laminate is characterized by reliable release of the protective overcoat from a carrier web.
    Type: Grant
    Filed: August 20, 1996
    Date of Patent: February 3, 1998
    Assignee: Polaroid Corporation
    Inventors: Ganghui Teng, Jiyue Yang
  • Patent number: 5700623
    Abstract: The present invention is a bar code label including an opaque polymer film substrate having a first side and a second side. A first primer layer is superposed on the first side of the opaque polymer film substrate and a light-sensitive silver halide photographic emulsion layer is superposed on the first primer layer. The light-sensitive photographic emulsion contains silver halide grains, a hydrophilic colloid, a polymer latex and a hardener. An overcoat layer is superposed on the light-sensitive photogaphic emulsion layer and includes a hydrophilic colloid and an image stabilizer. A second primer layer is superposed on the second side of the opaque polymer film and an antistatic layer is superposed on the second primer layer. The antistatic layer includes a polymeric binder and an antistatic agent. A pressure sensitive adhesive layer is superposed on the antistatic layer and a removable release sheet is superposed on the pressure sensitive adhesive layer.
    Type: Grant
    Filed: January 21, 1997
    Date of Patent: December 23, 1997
    Assignee: Eastman Kodak Company
    Inventors: Charles C. Anderson, Lawrence J. Steinwachs, Gary W. Schum
  • Patent number: 5681682
    Abstract: A light-sensitive material for producing color-test films for multi-color printing is disclosed. The material has (A) a transparent flexible base film of a plastic, (B) a photopolymerizable layer containing (B1) a polymeric binder, (B2) a compound polymerizable by a free-radical mechanism, (B3) a compound capable of initiating the polymerization of (B2) under the action of actinic light, and (B4) a dye or a colored pigment in one of the basic colors of multi-color printing, and (C) a thermoplastic adhesion layer on the light-sensitive layer is described. A polymer of a vinyl alkyl ether is present in at least one of the layers (B) and (C). The material is processed by lamination to an image-receiving material, with subsequent exposure and peeling-apart of base film and image-receiving material. The unexposed layer areas remain together with the adhesion layer on the image-receiving material. These steps are repeated with at least one further part-color image.
    Type: Grant
    Filed: May 11, 1995
    Date of Patent: October 28, 1997
    Assignee: AGFA-Gevaert AG
    Inventors: Karin Maerz, Stephan J. W. Platzer
  • Patent number: 5674664
    Abstract: In a method of and an apparatus for regenerating an image support from a used image-bearing support which bears thereon hydrophobic images formed of thermofusible or heat-softening ink, a plurality of image releasing members are used for removing the hydrophobic images from the used image-bearing support. Specifically, at least one of the image releasing members has a first portion which is able to adhere to the hydrophobic images and a second portion which is unable to adhere to the hydrophobic images, and the image releasing members are arranged in series in order of size of the first portion from small to large along a feeding direction of the used image support. Accordingly, the image releasing members are allowed to adhere to the hydrophobic images in order of size of the first portion from small to large so that the hydrophobic images are removed from the used image support effectively.
    Type: Grant
    Filed: October 13, 1994
    Date of Patent: October 7, 1997
    Assignee: Ricoh Company, Ltd.
    Inventors: Kiyoshi Tanikawa, Tadashi Saitoh
  • Patent number: 5667935
    Abstract: An element comprising, in order: (a) a removable substrate; (b) a transparent, nonphotosensitive, polymeric layer having a thickness of less than about 0.002 cm and a gloss of 45-70; said polymeric layer consisting essentially of at least one thermoplastic polymer having an elongation at break of greater than 30%, a glass transition temperature of 35.degree.-70.degree. C.; and (c) an elastomeric layer and optionally an additional, different removable substrate (d) adjacent to the elastomeric layer, wherein the polymeric layer exhibits improved adhesion to the removable substrate (a) when removable substrate (d) is removed is described.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: September 16, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Anchi Hou
  • Patent number: 5658416
    Abstract: Methods and apparatus for peeling a laminate containing image media wherein the leading edge portion of the laminate is struck by beater blades to initially separate the leading edge portion of one layer from the laminate. The separated leading edge portion is then transported into a nip defined by a peel surface and a lower peel roll after which the leading edge portion is bent about the peel surface by a folder driven by a linkage mechanism. While the leading edge portion of the laminate is bent, one layer is held by a vacuum device while the remainder of the laminate returns to its path of travel under its own resiliency. The separated layer is then peeled from the laminate by take-away rolls while guided by the peel surface. The remainder of the laminate is guided by a deflector roll to move along the path at a predetermined angle while the layer is being peeled. In one method, the layer is peeled at an angle to the longitudinal direction of the laminate.
    Type: Grant
    Filed: June 17, 1994
    Date of Patent: August 19, 1997
    Assignee: Polaroid Corporation
    Inventors: George O. MacCollum, Peter A. Bouchard, Dana F. Schuh, Richard A. Rosenthal, Frank S. Silveira, Donald G. Josephson
  • Patent number: 5656410
    Abstract: A process for the production of a heat-mode recording material having "direct read after write" (DRAW) capability and containing a heat-mode recording layer on a permanent support, wherein said process comprises in consecutive order the steps of (1) forming a laminated web by laminating with heat and pressure to said recording layer a single adhesive layer or multiple layer assemblage carried by a web-type temporary support which layer or layer assemblage has a thickness not larger than 20 .mu.m, and (2) separating said temporary support from said adhesive layer leaving said single adhesive layer through hardening as a protective element on said recording layer, or (2') separating said temporary support from said adhesive layer assemblage leaving said layer assemblage as a protective element on said recording layer through hardening of at least the outermost layer of the transferred layer assemblage.
    Type: Grant
    Filed: May 17, 1995
    Date of Patent: August 12, 1997
    Assignee: Agfa-Gevaert N.V.
    Inventors: Marc Van Damme, Luc Leenders, Yvan Hoogmartens, Dirk D'hont
  • Patent number: 5645963
    Abstract: Color filter elements are prepared by sequentially laminating, exposing and developing colored photoresist materials to form planar images on a transparent, non-birefringent substrate such as glass or polymeric film. Color filter elements are useful for elements in color displays such as liquid crystal display devices.
    Type: Grant
    Filed: November 20, 1995
    Date of Patent: July 8, 1997
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Jeffrey C. Chang
  • Patent number: 5643392
    Abstract: A method and apparatus are provided which act to peel different types of dry laminar imaging media having different peel attributes.
    Type: Grant
    Filed: December 19, 1994
    Date of Patent: July 1, 1997
    Assignee: Polaroid Corporation
    Inventor: Arthur H. Clough
  • Patent number: 5635317
    Abstract: A filter photographic material is produced by laminating together, in opposite relation, a first laminate obtained by laminating a filter layer and an adhesive layer successively on a support and a second laminate obtained by laminating a photoconductive layer and a transparent electrode layer successively on a carrier film through a release layer, followed by removal of the carrier film. Thus, it is possible to prevent the discoloration, fading, etc. of the filter layer and its preparation is made more efficient.
    Type: Grant
    Filed: April 4, 1995
    Date of Patent: June 3, 1997
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Yukio Taniguchi, Minoru Utsumi
  • Patent number: 5633117
    Abstract: This invention is a surface modifying element comprising a photosensitive layer on one side of a carrier substrate. The photosensitive layer comprises a photosensitive binder material and particulates. The invention is also a method of using the surface modifying element to create a receiver having imagewise variation in glossiness.
    Type: Grant
    Filed: April 27, 1995
    Date of Patent: May 27, 1997
    Assignee: Imation Corp.
    Inventors: Hamid Barjesteh, Michael B. Heller
  • Patent number: 5631117
    Abstract: A method of manufacturing a light-heat converting heat mode recording material comprises a first support having thereon a cushion layer, an intermediate layer and an image forming layer in that order, the material comprising a light-heat converting substance, the method comprising the steps of a) providing a first unit comprising a first support; b) providing a second unit comprising a second support having thereon the image forming layer; c) superposing the second unit on the first unit so that the image forming layer is in close contact with the first unit; and d) separating the second support from the image forming layer to form the recording material, wherein the second support has a releasing layer containing a cross-linked compound on the image forming layer side, the releasing layer being insoluble in a coating solvent for both the intermediate layer and the image forming layer, and provided between the second support, or has a releasing layer containing a fluorine-containing compound or a long chain a
    Type: Grant
    Filed: January 18, 1996
    Date of Patent: May 20, 1997
    Assignee: Konica Corporation
    Inventors: Atsushi Nakajima, Ai Katsuda, Sota Kawakami, Shinji Kudo
  • Patent number: 5631107
    Abstract: Disclosed is a method for producing an optical member having excellent optical characteristics. An optical member is composed of a support plate and an optical sheet stuck on said plate via an optical adhesive. The optical adhesive is made sticky after it is coated, including ultraviolet-curing adhesives, epoxy adhesives and their mixtures. To produce the optical member, the optical sheet is formed on the surface of a fixed substrate via a transfer film. The optical adhesive is coated onto the optical sheet, the adhesive is made sticky on the sheet, the fixed substrate is peeled off, the sheet is stuck onto the support plate using the adhesive, and the adhesive is cured.
    Type: Grant
    Filed: August 30, 1996
    Date of Patent: May 20, 1997
    Assignee: Nippondenso Co., Ltd.
    Inventors: Hiroyuki Tarumi, Teiyuu Kimura, Satoshi Koike, Kazumasa Kurokawa, Tetsuya Kato, Masayuki Goto
  • Patent number: 5614350
    Abstract: A photosensitive transfer material comprising a temporary support and a colored photopolymer layer formed on the temporary support. The colored photopolymer layer contains at least one quinophthalone dye. Also, disclosed is a method of forming an image using the photosensitive transfer material, to thereby form a multicolor image having good chromaticity even when organic solvent-soluble dyes are used and, in addition, having excellent transmission and light- and heat resistance. A color filter exhibiting high contrast as a liquid crystal display can also be produced using the photosensitive transfer material.
    Type: Grant
    Filed: October 18, 1995
    Date of Patent: March 25, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hideaki Ito, Masayuki Iwasaki
  • Patent number: 5612167
    Abstract: The present invention provides new image forming methods. The image forming methods use a combination of a light-sensitive material and an image receiving material. The light-sensitive material comprises a support, a strippable layer and a light-sensitive polymerizable layer in order. The light-sensitive polymerizable layer contains silver halide, a reducing agent and an ethylenically unsaturated polymerizable compound or a cross-linkable polymer. The light-sensitive polymerizable layer may further contain a colorant. An image forming method using the light-sensitive polymerizable layer containing no colorant comprises an exposing step, a developing step, a toning step and a transferring step. Another image forming method using the colorant-containing light-sensitive polymerizable layer comprises an exposing step, a developing step, a removing step and a transferring step.
    Type: Grant
    Filed: November 20, 1995
    Date of Patent: March 18, 1997
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Hiroaki Yokoya, Koji Shirakawa
  • Patent number: 5612168
    Abstract: An image transfer sheet comprises a base sheet, an intermediate thermoplastic resin layer and a top developer layer containing a binder. The binder of the top layer and the thermoplastic resin of the intermediate layer include a polymer having a common monomer component so that separation of the top layer from the intermediate layer and splitting of the top layer are effectively prevented. This provides a clear, high quality image on an image receiving surface such as paper by transference of a developed image on the developer layer.
    Type: Grant
    Filed: May 19, 1993
    Date of Patent: March 18, 1997
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Keiko Ishikawa
  • Patent number: 5612304
    Abstract: A noncorrosive post-etch residue cleaning composition containing:(a) 1-70% by weight of an organic polar solvent having a dipole moment of more than 3.5;(b) 1-70% by weight of selected amine compounds having at least one hydroxyl group and a boiling point higher than 150.degree. C. at atmospheric pressure;(c) 0.1-10% by weight of selected amino acid having at least one hydroxyl group;(d) 1-20% by weight of selected redox reagent having a redox potential in the range between +1.0 V and -2.0 V vs. SHE (at pH=7); and(e) 0-90% by weight of water.
    Type: Grant
    Filed: July 7, 1995
    Date of Patent: March 18, 1997
    Assignee: Olin Microelectronic Chemicals, Inc.
    Inventors: Kenji Honda, Rodney Hurditch
  • Patent number: 5609984
    Abstract: An element comprising, in order: (a) a removable substrate; (b) a transparent, nonphotosensitive, polymeric layer having a thickness of less than about 0.002 cm and a gloss of 45-70; said polymeric layer consisting essentially of at least one thermoplastic polymer having an elongation at break of greater than 30%, a glass transition temperature of 35.degree.-70.degree. C.; and (c) an elastomeric layer and optionally an additional, different removable substrate (d) adjacent to the elastomeric layer, wherein the polymeric layer exhibits improved adhesion to the removable substrate (a) when removable substrate (d) is removed is described.
    Type: Grant
    Filed: May 4, 1995
    Date of Patent: March 11, 1997
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Anchi Hou
  • Patent number: 5609981
    Abstract: A camera speed lithographic plate precursor composition is used for the preparation of waterless, imaged printing plates. The plates comprise a solid substrate with a first layer of a photopolymerizable, oleophilic coating; a second layer of silicone rubber; a third protective film layer; and a top or fourth layer comprising a silver halide emulsion containing polymeric binders or keying agents.
    Type: Grant
    Filed: December 1, 1995
    Date of Patent: March 11, 1997
    Assignee: Sun Chemical Corporation
    Inventors: Robert W. Hallman, Suck-Ju Hong, Ken-ichi Shimazu
  • Patent number: 5599648
    Abstract: Surface reforming of a polymeric article containing a polymerizable compound is effectively performed by polymerizing the polymeric article in contact with a surface reforming medium because the transfer of the material constituting the surface reforming medium to the polymeric article is enhanced by the polymerization. The surface reforming can be performed locally selectively, i.e., imagewise. The remaining un-polymerized part may be subjected to further surface reforming, e.g., by using another type of surface reforming medium or attachment of powder, to provide an enhanced contrast of surface property. Such an enhanced contrast of surface property can be effectively used, e.g., for production of a printing plate.
    Type: Grant
    Filed: November 26, 1993
    Date of Patent: February 4, 1997
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuji Kondo, Masato Katayama, Akihiro Mouri
  • Patent number: 5597678
    Abstract: A non-corrosive positive photoresist stripper composition comprising:(a) a solvent selected from N-methyl-2-pyrrolidone, N-hydroxyethyl-2-pyrrolidone, 1,3-dimethyl-2-imidazolidinone dimethylsulfoxide, and admixtures thereof;(b) a corrosion inhibitor selected form tricine, bicine, (2-benzothiozolythio)succinic acid, and admixtures thereof;(c) optionally, an alkanolamine selected from diethyleneglycolamine, monoethanolamine, diethanolamine, triethanolamine, and admixtures thereof;(d) optionally, water; and(e) optionally, a water-soluble surface active compound.
    Type: Grant
    Filed: July 7, 1995
    Date of Patent: January 28, 1997
    Assignee: OCG Microelectronic Materials, Inc.
    Inventors: Kenji Honda, Donald F. Perry, Taishih Maw
  • Patent number: 5597676
    Abstract: The present invention provides a method for obtaining an imaging element suitable for use in a silver salt diffusion transfer process by the steps of:preparing an image receiving element by coating the anodized surface of an aluminum foil with an image-receiving layer comprising physical development nuclei,preparing a photosensitive layer packet by coating a temporary base with at least one photosensitive silver halide emulsion layer,pressing the thus formed photosensitive layer packet with its photosensitive silver halide emulsion coated side against said image receiving layer, which has been wet with an aqueous moistening liquid, andoptionally removing said temporary base, characterized in that between said temporary base and said at least one photosensitive silver halide emulsion layer a barrier layer is present which is substantially free of developing agents, is substantially unhardened, comprises one or more hydrophilic binders in an amount of at least 0.25 g/m.sup.
    Type: Grant
    Filed: August 17, 1995
    Date of Patent: January 28, 1997
    Assignee: AGFA-Gevaert. N.V.
    Inventors: Ludo Van Rompuy, Paul Coppens
  • Patent number: 5587272
    Abstract: This invention makes available processes for preparing images, especially color proofs. A layer with imagewise tacky and nontacky areas is toned. Toner adhering to the tacky areas is transferred first onto a temporary support and from there onto an image receptor.
    Type: Grant
    Filed: December 7, 1995
    Date of Patent: December 24, 1996
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Mario Grossa, Udo D. Bode, Manfred Sondergeld, Karl-Heinz Wiedenmann, Ronald J. Convers, Steven M. Kalo, Ashok K. Kudva
  • Patent number: 5580693
    Abstract: Disclosed is a light-heat converting type heat mode recording process using a recording material and an image receiving material, which comprises the steps of:(a) transferring an ink image from a recording material to an image receiving material by exposing from a back of the recording material or the receiving material; and(b) transferring the ink image from the image receiving material to a final recording medium by applying heat or pressure.The light-heat converting type heat mode recording material and the light-heat converting type heat mode image receiving material are capable of forming excellent transferred images.
    Type: Grant
    Filed: May 28, 1993
    Date of Patent: December 3, 1996
    Assignee: Konica Corporation
    Inventors: Atsushi Nakajima, Shinji Matsumoto, Katsumi Maejima, Sota Kawakami, Shozo Kikugawa
  • Patent number: 5573888
    Abstract: An image transfer method which can prevent poor registering and gives an esthetically fine multi-color prepress proof and a multi-color print with excellent registering, the method comprising imagewise exposing an image-forming material consisting essentially of a substrate, a photosensitive layer formed on the substrate and a protection film attached to the photosensitive layer, peeling off the protection film, and introducing the image-forming material into a nip formed so that the photosensitive layer of the image-forming material and an image receptor come into contact with each other to selectively transfer part of the photosensitive layer to the image receptor and obtain a transfer image,the method using the image forming material prepared by attaching the protection film to the photosensitive layer under a tension at right angles with the axial direction of the rolls.
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: November 12, 1996
    Assignee: Toyo Ink Manufacturing Co., Ltd.
    Inventors: Arata Imabayashi, Yasuhiro Tanaka
  • Patent number: 5573631
    Abstract: A laminating system for bonding, to receiver stock, a lamination sheet of the type including a carrier and a material to be applied to the receiver stock, and for subsequently de-laminating the carrier from the receiver stock after the material has been applied to the receiver stock, includes a fuser to apply the material to the receiver stock. The leading edge of the carrier has a de-lamination leader to separate the carrier from the receiver stock as the leading edge of the sandwich emerges from the fuser. A first portion of the carrier is manually directed through a pair of idler rollers as the sandwich emerges from the fuser to form the carrier into a generally S-shaped curve so that operator attention is thereafter not needed to separate the remainder of the carrier and receiver stock.
    Type: Grant
    Filed: December 1, 1994
    Date of Patent: November 12, 1996
    Assignee: Eastman Kodak Company
    Inventors: Colin C. Campbell, Lawrence P. Pate
  • Patent number: 5560979
    Abstract: A binary image comprising a plurality of first areas, at which a porous or particulate image-forming substance is adhered to a substrate, and a plurality of second areas, at which the substrate is free from the image-forming substance, is protected by laminating thereto a laminating sheet comprising a durable layer and a support layer with the durable layer facing the image, so that the durable layer adheres to both the first and second areas of the image. The support layer is then displaced away from the image such that the durable layer remains attached to the image. The durable layer is substantially transparent and comprises a polymeric organic material having incorporated therein a siloxane, the siloxane being incorporated into the polymeric material in such a manner that it is not removed therefrom by hexane, isopropanol or water.
    Type: Grant
    Filed: October 20, 1995
    Date of Patent: October 1, 1996
    Assignee: Polaroid Corporation
    Inventors: Iris B. K. Bloom, Agota F. Fehervari, Russell A. Gaudiana, Richard A. Minns, Howard G. Schild
  • Patent number: 5558972
    Abstract: The present invention discloses a thermal imaging process using (i) a donor element comprising on a support a donor layer containing a binder and a thermotransferable reducing agent capable of reducing a silver source to metallic silver upon heating and (ii) a receiving element comprising on a support in the order given a receiving layer and a curable layer, said receiving layer comprising a silver source capable of being reduced by means of heat in the presence of a reducing agent for said silver source and a binder, said thermal imaging process comprising the steps ofbringing said donor layer of said donor element into face to face relationship with said receiving layer of said receiving element,image-wise heating a thus obtained assemblage, thereby causing image-wise transfer of an amount of said thermotransferable reducing agent to said receiving element in accordance with the amount of heat supplied,separating said donor element from said receiving element,curing said release layer andoverall heating sai
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: September 24, 1996
    Assignee: Agfa-Gevaert
    Inventors: Marc Van Damme, Herman Uytterhoeven, Geert Defieuw
  • Patent number: 5552259
    Abstract: A laminar thermal imaging medium is prepared from a first element comprising a first sheet transparent to image-forming radiation and having at least a surface zone or layer of polymeric material heat-activatable upon subjection of the thermal imaging medium to brief and intense radiation, the first element carrying a layer of porous or particulate image-forming substance having cohesivity in excess of its adhesivity for the polymeric heat-activatable layer, and, on the opposed side of the layer of porous or particulate image-forming substance from the surface zone or layer, a first layer of adhesive, and a second element comprising a second sheet carrying a second layer of adhesive. The second layer of adhesive comprises a polymeric hardenable adhesive comprising a macromolecular organic binder having acidic groups, and a photopolymerizable monomer.
    Type: Grant
    Filed: September 23, 1993
    Date of Patent: September 3, 1996
    Assignee: Polaroid Corporation
    Inventors: Iris B. K. Bloom, Richard A. Minns, Cynthia L. Zahka
  • Patent number: 5547811
    Abstract: A photosensitive material for making color-proofing films for multicolor printing is described, withA) a transparent flexible support of plastic,B) a photopolymerizable layer on (A) which containsB1) a polymeric binder,B2) a compound polymerizable by a free-radical mechanism,B3) a compound which is capable of initiating the polymerization of (B2) under the action of actinic light andB4) a dye or a color pigment in a primary color of the multicolor print, andC) a thermoplastic adhesive layer which comprises at least one polymer which contains units (C1) with aliphatic side chains having at least 5 carbon atoms.The material is processed by laminating to an image receptor sheet, exposure and peeling apart of support and image receptor sheet, the unexposed layer areas remaining together with the adhesive layer on the image receptor sheet. These steps are repeated with at least one further image in primary colors. The material provides for a reduction of the background stain in the non-image areas.
    Type: Grant
    Filed: November 14, 1995
    Date of Patent: August 20, 1996
    Assignee: Agfa-Gevaert AG
    Inventors: Karin Maerz, Volker Matz, Detlev Seip, Stephen J. W. Platzer
  • Patent number: 5545506
    Abstract: This invention relates to negative working color proofing sheet constructions which, upon exposure to an actinic radiation source through a screened image, can accurately reproduce said image. The construction is useful as a color proofing film which can be employed to accurately predict the image quality from a lithographic printing process. The image is produced by forming a composite of a receiver sheet, an adhesive layer, a color layer and cover sheet. Upon imagewise exposure, a negative image appears on the receiver base after dry peel apart development.
    Type: Grant
    Filed: June 24, 1992
    Date of Patent: August 13, 1996
    Assignee: Hoechst Celanese Corporation
    Inventors: Wojciech A. Wilczak, Stephan J. W. Platzer, David L. Siegfried
  • Patent number: 5534094
    Abstract: A method and apparatus for releasing a workpiece from a substrate including providing a substrate which is transparent to a predetermined wavelength of electromagnetic radiation; forming, on the substrate, a separation layer which degrades in response to the predetermined radiation; providing the workpiece on the separation layer; and directing the predetermined radiation at the separation layer through the transparent substrate so as to degrade the separation layer and to separate the workpiece from the substrate.
    Type: Grant
    Filed: September 29, 1994
    Date of Patent: July 9, 1996
    Assignee: IBM Corporation
    Inventors: Gnanalingam Arjavalingam, Alina Deutsch, Fuad E. Doany, Bruce K. Furman, Donald J. Hunt, Chandrasekhar Narayan, Modest M. Oprysko, Sampath Purushothaman, Vincent Ranieri, Stephen Renick, Jane M. Shaw, Janusz S. Wilczynski, David F. Witman
  • Patent number: 5531854
    Abstract: A laminating system for bonding, to receiver stock, a lamination sheet of the type including a carrier and a material to be applied to the receiver stock, and for de-laminating the carrier from the receiver stock after the material has been applied to the receiver stock includes a superposed sandwich of the lamination sheet and the receiver stock. A de-lamination leader is associated with one edge of the lamination sheet and the receiver, whereby the carrier can be easily peeled from the receiver stock starting at the one edge. The leader may be between the one edge of the lamination sheet and the receiver stock so that the edge does not laminate to the receiver stock upon application of heat and pressure. Alternatively, the leader may be butt joined to the one edge of the lamination sheet, such as by tape. A pair of adhesive stripes, one stripe being more adhesive than the other, may also be used to join the materials.
    Type: Grant
    Filed: December 1, 1994
    Date of Patent: July 2, 1996
    Assignee: Eastman Kodak Company
    Inventors: Roger S. Kerr, Hugh A. Cunningham
  • Patent number: 5529887
    Abstract: A coating-removing solution for photo-cross-linked and thermally cross-linked photoresist masks and solder resist masks cross-linked by exposure to light and heat and which solution contains a diglycol monoalkyl ether, a glycol monoalkyl ether, an alkali hydroxide, water, and a water-soluble fluoride.
    Type: Grant
    Filed: March 29, 1994
    Date of Patent: June 25, 1996
    Assignee: Morton International, Inc.
    Inventors: Klaus Horn, Jurgen Lingnau, Klaus-Peter Martens
  • Patent number: 5520776
    Abstract: A method and apparatus for separating layers of a laminated thermographic media is disclosed. The apparatus has a torque roll cooperating with a pair of peel rolls which breaks a tab on the media without a hard stop thereby avoiding shock induced premature delamination. After the media is initially delaminated, a deflector roll operable independently of the peel rolls engages the backside of the substrate for establishing a deflector angle. An anti-skew system is also incorporated for aligning the media with the torque roll and peel rolls.
    Type: Grant
    Filed: May 10, 1994
    Date of Patent: May 28, 1996
    Assignee: Polaroid Corporation
    Inventors: David E. Van Allen, Richard A. Rosenthal, George D. Whiteside
  • Patent number: 5514525
    Abstract: A laminar thermal imaging medium is prepared from a first element comprising a first sheet transparent to image-forming radiation and having at least a surface zone or layer of polymeric material heat-activatable upon subjection of the thermal imaging medium to brief and intense radiation, the first element carrying a layer of porous or particulate image-forming substance having cohesivity in excess of its adhesivity for the polymeric heat-activatable layer, and, on the opposed side of the layer of porous or particulate image-forming substance from the surface zone or layer, a first layer of adhesive, and a second element comprising a second sheet carrying a second layer of adhesive. The second layer of adhesive comprises a polymeric hardenable adhesive comprising a macromolecular organic binder having acidic groups, and a photopolymerizable monomer.
    Type: Grant
    Filed: May 12, 1995
    Date of Patent: May 7, 1996
    Assignee: Polaroid Corporation
    Inventors: Iris B. K. Bloom, Richard A. Minns, Cynthia L. Zahka
  • Patent number: 5512420
    Abstract: A camera speed lithographic plate precursor composition is used for the preparation of waterless, imaged printing plates. The plates comprise a solid substrate with a first layer of a photopolymerizable, oleophilic coating; a second layer of silicone rubber; a third protective film layer; and a top or fourth layer comprising a silver halide emulsion containing polymeric binders or keying agents.
    Type: Grant
    Filed: February 22, 1995
    Date of Patent: April 30, 1996
    Assignee: Sun Chemical Corporation
    Inventors: Robert W. Hallman, Suck-Ju Hong, Ken-ichi Shimazu
  • Patent number: 5508142
    Abstract: The present invention provides an imaging element comprising in the order given (i) a hydrophilic base, (ii) an image receiving layer containing physical development nuclei and (iii) a photosensitive layer containing a silver halide emulsion being in water permeable relationship with said image receiving layer, characterized in that said photosensitive layer or another optional layer being in water permeable relationship therewith contains at least one gelatin species whereof a 10% by weight aqueous solution at 36.degree. C. and pH 6 has a viscosity lower than 20 mPa.s at a shearing rate of 1000 s.sup.-1.
    Type: Grant
    Filed: June 29, 1994
    Date of Patent: April 16, 1996
    Assignee: AGFA-GEVAERT, N.V.
    Inventors: Paul Coppens, Eric Hoes, Ludovicus Vervloet
  • Patent number: 5501940
    Abstract: A binary image comprising a plurality of first areas, at which a porous or particulate image-forming substance is adhered to a substrate, and a plurality of second areas, at which the substrate is free from the image-forming substance, is protected by laminating thereto a laminating sheet comprising a durable layer and a support layer with the durable layer facing the image, so that the durable layer adheres to both the first and second areas of the image. The support layer is then displaced away from the image such that the durable layer remains attached to the image. The durable layer is substantially transparent and comprises a polymeric organic material having incorporated therein a siloxane, the siloxane being incorporated into the polymeric material in such a manner that it is not removed therefrom by hexane, isopropanol or water.
    Type: Grant
    Filed: May 20, 1993
    Date of Patent: March 26, 1996
    Assignee: Polaroid Corporation
    Inventors: Iris B. K. Bloom, Agota F. Fehervari, Russell A. Gaudiana, Richard A. Minns, Howard G. Schild
  • Patent number: 5498504
    Abstract: A process is provided for forming an image involving a photosensitive element comprising a photopolymerisable monomer and a reducible metal salt, preferably silver behenate, and a donor element containing a reducing agent. After lamination to a cover sheet, photopolymerisation and delamination, the image density is built up by lamination to the donor element, transfer of reducing agent and peeling-apart, possibly followed by heating the photosensitive element.
    Type: Grant
    Filed: November 21, 1994
    Date of Patent: March 12, 1996
    Assignee: Agfa-Gevaert, N.V.
    Inventors: Luc Leenders, Eddie Daems
  • Patent number: 5492805
    Abstract: A photothermographic element containing a support bearing at least one heat-developable, photosensitive, image-forming photothermographic emulsion layer is provided. The emulsion layer comprises:(a) a photosensitive silver halide;(b) a non-photosensitive, reducible source of silver;(c) a leuco dye reducing agent; and(d) a binder;wherein the leuco dye reducing agent comprises a blocked leuco dye compound of the general formula L-R.sup.1, which is capable of being oxidized to a colored form, wherein:(i) L is a group remaining after removal of a hydrogen from a leuco dye; and(ii) R.sup.1 is a C(O)--NH--SO.sub.2 --R.sup.5 group wherein R.sup.5 is an aliphatic group or an aromatic group.
    Type: Grant
    Filed: June 30, 1994
    Date of Patent: February 20, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Larry R. Krepski, Sharon M. Simpson, Kim M. Vogel
  • Patent number: 5492791
    Abstract: A photosensitive material for making color-proofing films for multicolor printing is described, withA) a transparent flexible support of plastic,B) a photopolymerizable layer on (A) which containsB1) a polymeric binder,B2) a compound polymerizable by a flee-radical mechanism,B3) a compound which is capable of initiating the polymerization of (B2) under the action of actinic light andB4) a dye or a color pigment in a primary color of the multicolor print, andC) a thermoplastic adhesive layer which comprises at least one polymer which contains units (C1) with aliphatic side chains having at least 5 carbon atoms.The material is processed by laminating to an image receptor sheet, exposure and peeling apart of support and image receptor sheet, the unexposed layer areas remaining together with the adhesive layer on the image receptor sheet. These steps are repeated with at least one further image in primary colors. The material provides for a reduction of the background stain in the non-image areas.
    Type: Grant
    Filed: April 28, 1995
    Date of Patent: February 20, 1996
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Karin Maerz, Volker Matz, Detlev Seip, Stephan J. W. Platzer
  • Patent number: 5484684
    Abstract: Flexible printing plates are produced from printing plates consisting essentially of a dimensionally stable substrate (1) and a recording layer (2) by a process in which the printing plate is produced alternatively either by photochemical or by mechanical structuring, and in the case of photochemical structuring the photosensitive recording layer (2) is exposed imagewise and the unexposed parts of the recording layer (2) are washed out with a developer and in the case of mechanical structuring the originally photosensitive, uniformly exposed recording layer (2) is cut imagewise and the nonprinting parts of the recording layer (2) are peeled off from the substrate (1).The printing plates produced by this process are suitable for the production of products printed by the flexographic method and for lacquering products printed by the offset method.
    Type: Grant
    Filed: April 10, 1995
    Date of Patent: January 16, 1996
    Assignee: BASF Lacke & Farben
    Inventors: Thomas Telser, Heinz-Ulrich Werther, Manfred Zuerger
  • Patent number: 5478434
    Abstract: A laminating system for bonding, to receiver stock, a lamination sheet of the type including a carrier, a material to be applied to the receiver stock, and a de-lamination leader associated with one edge of the lamination sheet; and for peeling the carrier from the receiver stock after the material has been applied to the receiver stock, includes a fuser through which a sandwich of receiver stock and lamination sheet, with material to be applied to the receiver stock between the carrier of the lamination sheet and the receiver stock, is fed with the de-lamination leader and the one edge facing in the direction of feed to apply the material to the receiver stock. A pair of driven nip rollers receive the de-lamination leader therebetween as the sandwich emerges from the fuser to tension the carrier, thereby breaking the bond between the carrier and the receiver stock.
    Type: Grant
    Filed: December 1, 1994
    Date of Patent: December 26, 1995
    Assignee: Eastman Kodak Company
    Inventors: Roger S. Kerr, Hugh A. Cunningham