Color Proofing, Colloid Transfer, Or Pigment Development Patents (Class 430/143)
  • Patent number: 5300399
    Abstract: In the present invention, one produces a negative-acting color proofing element comprising, sequentially, a strippable cover sheet which is transparent to actinic radiation; a crosslinked layer containing a polymer having phenolic groups; a color layer, containing a colorant, a polymeric binder, a polymerizable monomer and, optionally, a photoinitiator; a photoadhering layer, containing a linear photosensitive polymer containing ethylenically unsaturated, free-radical polymerizable groups and having a molecular weight greater than 3,000, a polymerizable monomer, and, optionally, a free radical photoinitiator; a thermoplastic adhesive layer; and a receiver sheet, at least one of the color layer and the photoadhering layer containing the photoinitiator.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: April 5, 1994
    Assignee: Hoechst Celanese Corporation
    Inventor: Wojciech A. Wilczak
  • Patent number: 5300395
    Abstract: A white, partially translucent, metallized film article which having a flexible, heat resistant, polymeric film material with opposite sides. The film material has deposited on a first side a metal coating which is spectrally reflective and partially light transmissive in the visible region of the spectrum, is capable of transmitting from about 1% to about 70% of incident visible light cast thereon; the second side having a white outermost surface, and has a visible light opacity of from about 0.5 to about 0.98.
    Type: Grant
    Filed: July 6, 1993
    Date of Patent: April 5, 1994
    Assignee: Hoechst Celanese Corporation
    Inventors: Robert J. von Trebra, Gerald A. Smith, Roy E. Hensel, Oliver A. Barton, deceased
  • Patent number: 5273855
    Abstract: (Objective) In a color-proof material performed by forming multi-color image on an arbitrary material (ultimate image-receiving material) such as paper using a photosensitive transfer sheet and an intermediate image-receiving sheet, the objective is to bring the quality close to the printed quality formed with inks alone.(Constitution) For the photosensitive sheet, the colored photosensitive layer is formed with a material comprising a synthetic resin emulsion with Tg=-20.degree. to 40.degree. C. such as acrylic ester or ethylene-vinyl acetate copolymer so that the image layer itself has heat-adhesivity. Moreover, the image-receiving layer of the intermediate image-receiving sheet is formed with a material containing a resin cross-linked copolymer of olefin and .alpha., .beta.-unsaturated carboxylic acid with metallic ions and a resin comprising a copolymer of ethylene and vinyl acetate in a proportion by weight of 100/0 to 10/90.
    Type: Grant
    Filed: November 21, 1991
    Date of Patent: December 28, 1993
    Assignee: Sanyo-Kokusaku Pulp Co., Ltd.
    Inventors: Hisahiro Omote, Masahiro Yoshikawa, Masahide Takano
  • Patent number: 5258247
    Abstract: A photoimaged article having a protected image composed of a colored image on a support; and a thin, transparent, flexible, nonself supporting, protective layer on the surface of the image. The layer is substantially nontacky at room temperature, and has at least a major amount based on the weight of the layer of one or more thermoplastic resins of a vinyl acetal, vinyl chloride, or acrylic polymer or copolymer having a Tg of from about 35.degree. C. to about 110.degree. C. The layer is capable of being adhesively transferred directly to the image when the layer is first applied on the release surface of a temporary support, and the image and protective layer are laminated together under pressure at temperatures of between about 60.degree. C. to about 180.degree. C. with subsequent removal of the temporary support. The side of said layer opposite to the image is free from additional layers. The adhesive layer is one which does not cohesively block at temperatures of about 50.degree. C. or less.
    Type: Grant
    Filed: November 6, 1989
    Date of Patent: November 2, 1993
    Assignee: Hoechst Celanese Corporation
    Inventor: Stephan J. W. Platzer
  • Patent number: 5248583
    Abstract: A photosensitive color proofing article comprising in the following order:a) a carrier layer,b) a release layer which acts as an oxygen barrier layer,c) a photopolymerizable layer comprising a multifunctional acrylate oligomer and a colorant,d) a photopolymerizable barrier layer, ande) a thermal adhesive layer.
    Type: Grant
    Filed: August 30, 1991
    Date of Patent: September 28, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Wallace R. Lundquist, Thomas P. Klun, Michael B. Heller, Leonard W. Sachi
  • Patent number: 5246812
    Abstract: A white, partially translucent, metallized film article which having a flexible, heat resistant, polymeric film material with opposite sides. The film material has deposited on a first side a metal coating which is spectrally reflective and partially light transmissive in the visible region of the spectrum, is capable of transmitting from about 1% to about 70% of incident visible light cast thereon; the second side having a white outermost surface, and has a visible light opacity of from about 0.5 to about 0.98.
    Type: Grant
    Filed: March 22, 1990
    Date of Patent: September 21, 1993
    Assignee: Hoechst Celanese Corporation
    Inventors: Robert J. von Trebra, Gerald A. Smith, Roy E. Hensel, Oliver A. Barton, deceased
  • Patent number: 5246818
    Abstract: A developer composition for positive color proofing films containinga) sodium, potassium or ammonium octyl sulfate; sodium, potassium or ammonium lauryl sulfate; sodium decyl sulfate; or sodium tetradecyl sulfate; andb) sodium or potassium borate; andc) boric acid; andd) monobasic sodium or potassium phosphate; ande) sodium or potassium citrate; andf) sodium or potassium salicylate; andg) sodium, potassium or lithium benzoate; andh) sufficient water to formulate an effective developer.
    Type: Grant
    Filed: August 16, 1989
    Date of Patent: September 21, 1993
    Assignee: Hoechst Celanese Corporation
    Inventor: Shuchen Liu
  • Patent number: 5240810
    Abstract: Most prepress color proofing systems require the use of special receptor sheets. The differences between the special sheets and the final print sheet can affect the desired color balance. The use of a proof image on a temporary transfer sheet, with an adhesive layer between the image and a final receptor layer, enables the use of essentially any printing stock or printing surface as the final proofing image substrate.
    Type: Grant
    Filed: July 8, 1991
    Date of Patent: August 31, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Hamid Barjesteh
  • Patent number: 5232814
    Abstract: Metallic appearing images may be produced with a color proofing sheet which comprises a temporary carrier layer, a metallic appearance pigment-filled layer, a color pigment filled layer, a photoresist layer, and an optional adhesive layer. There may be a barrier layer between the optional adhesive and the resist layer and a release layer coating may be on the temporary carrier layer.
    Type: Grant
    Filed: December 30, 1991
    Date of Patent: August 3, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Charles W. Graves, Timothy W. Olson
  • Patent number: 5213941
    Abstract: This invention provides an improved negative-working or positive-working, single sheet color proofing method which can accurately reproduce images by using colored, photosensitive layers on substrates which are then overcoated with partially developable adhesive layers. The final construction is useful in predicting the image quality from a lithographic printing process. The partial removal of the adhesive layers cleans out any background stain which may remain from the incomplete removal of the photosensitive layer.
    Type: Grant
    Filed: October 21, 1988
    Date of Patent: May 25, 1993
    Assignee: Hoechst Celanese Corporation
    Inventor: Stephan J. W. Platzer
  • Patent number: 5212041
    Abstract: This invention relates to water developable, negative working photosensitized 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 predict the image quality from a lithographic printing process. The invention provides both overlay and transfer type proofing sheets which have good fingerprint resistance.
    Type: Grant
    Filed: April 2, 1991
    Date of Patent: May 18, 1993
    Assignee: Hoechst Celanese Corporation
    Inventor: Stanley F. Wanat
  • Patent number: 5183723
    Abstract: This invention relates to a method for forming a colored image on a degradable sheet material. As a result, a negative- or positive-working color proofing sheet can be produced on a variety of printing paper stocks. Upon exposure to an actinic radiation source through a screened image and development, it can accurately reproduce the image on the degradable sheet. The construction is useful as a color proof which can be employed to accurately predict the image quality from a lithographic printing process on a variety of printing surfaces.
    Type: Grant
    Filed: December 13, 1991
    Date of Patent: February 2, 1993
    Assignee: Hoechst Celanese Corporation
    Inventors: Stephan J. W. Platzer, Arthur E. Procter, Thomas Dunder
  • Patent number: 5176973
    Abstract: An at least two-color low optical dot gain surlay pre-press color proof comprising a base having laminated thereto in the following order, a first adhesive layer, a first single-color image, and then at least one additional pair of thin adhesive layers and comprising a synthetic polymeric binder composition with a Tg of less than 105.degree. and a thickness of 8-30 microns which thickness is at least twice that of any one of said additional thin adhesive layers.
    Type: Grant
    Filed: September 28, 1989
    Date of Patent: January 5, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Charles J. Gifford, Jack E. Cook, Bruce W. Weeks, Julien M. Wajs
  • Patent number: 5108868
    Abstract: This invention relates to a negative-working, peel developable, single sheet color proofing method which can accurately reproduce images, using photosensitized, color constructions. The final construction is useful in predicting the image quality from a lithographic printing process.
    Type: Grant
    Filed: October 21, 1988
    Date of Patent: April 28, 1992
    Assignee: Hoechst Celanese Corporation
    Inventor: Stephan J. W. Platzer
  • Patent number: 5100757
    Abstract: This invention relates to a method for forming a colored image on a degradable sheet material. As a result, a negative- or positive-working color proofing sheet can be produced on a variety of printing paper stocks. Upon exposure to an actinic radiation source through a screened image and development, it can accurately reproduce the image on the degradable sheet. The construction is useful as a color proof which can be employed to accurately predict the image quality from a lithographic printing process on a variety of printing surfaces.
    Type: Grant
    Filed: October 21, 1988
    Date of Patent: March 31, 1992
    Assignee: Hoechst Celanese Corporation
    Inventors: Stephan J. W. Platzer, Arthur E. Proctor, Thomas Dunder
  • Patent number: 5096801
    Abstract: A novel color image recording method is provided, which comprises exposing to light a light-sensitive material obtained by dispersing a composition containing at least a photopolymerization initiator, a color image-forming substance and a polymerizable compound in a hydrophilic binder and then coating said dispersion on a support, subjecting said polymerizable compound in the exposed portions to polymerization, and then (a) eluting said color image-forming substance contained in the unpolymerized polymerizable compound in the unexposed portions with an alkaline aqueous solution or (b) subjecting said color image-forming substance contained in the unpolymerized polymerizable compound in the unexposed portions to chemical change so that it is discolored, thereby forming dye images.
    Type: Grant
    Filed: April 3, 1990
    Date of Patent: March 17, 1992
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Keizo Koya, Kozo Sato, Yoshiharu Yabuki, Hiroshi Hara
  • Patent number: 5094931
    Abstract: The invention provides a method for protecting an image which comprises providing a multilayered colored image on a permanent receiver which may be any of a wide range of materials. A photosensitive element on a substrate is laminated to a temporary element and exposed with substrate removal before development. After development, the steps are repeated with another color. A protective element is laminated to the colored image. After removal of the support of the temporary element, the colored image with protective element is laminated to a permanent receiver.
    Type: Grant
    Filed: April 23, 1990
    Date of Patent: March 10, 1992
    Assignee: Hoechst Celanese Corporation
    Inventor: Stephan J. W. Platzer
  • Patent number: 5095379
    Abstract: Color filters, including those used in a liquid crystal display, aee repaired in a self-aligning manner. Defective parts of the colored pixels of a filter are filled with a negative type photosensitive resin containing a pigment of the same color as the colored pixel. The photosensitive resin is exposed to light through the defective colored pixels and the exposed resin is developed. When the defect extends through pixels of different colors, a gray colored resin is utilized. The gray colored resin has a color temperature equal to that of the white color temperature resulting from the additive color process of the colors of the various colored pixels of the filter.
    Type: Grant
    Filed: April 15, 1991
    Date of Patent: March 10, 1992
    Assignee: International Business Machines Corporation
    Inventors: Tetsuya Fukunaga, Ayumi Ikeda, Toshihiro Ueki
  • Patent number: 5080996
    Abstract: A photosensitive element which comprises a substrate having a release surface; a photosensitive layer having a photosensitizer, pigment, and mixture of binders with different solubility characteristics; and an adhesive layer coated directly on the photosensitive layer. The adhesive solution dissolves one of the resins in the photosensitive layer but does not dissolve the photosensitizer and the resin used to bind the pigment. During overcoating of the adhesive on the photosensitive layer, an increasing gradient of the soluble resin towards the adhesive layer and a decreasing gradient of the photosensitizer and nonsoluble resin is formed.
    Type: Grant
    Filed: January 28, 1991
    Date of Patent: January 14, 1992
    Assignee: Hoechst Celanese Corporation
    Inventor: Stephan J. W. Platzer
  • Patent number: 5053310
    Abstract: This invention relates to negative photosensitized 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 predict the image quality from a lithographic printing process.
    Type: Grant
    Filed: July 17, 1990
    Date of Patent: October 1, 1991
    Assignee: Hoechst Celanese Corporation
    Inventor: Stephan J. W. Platzer
  • Patent number: 5039590
    Abstract: This invention relates to a single positive or negative working photosensitive layer on a substrate which, upon exposure to an actinic radiation source through a screened image, can accurately reproduce said image after processing and lamination. The construction is useful as a color proofing film which can be employed to predict the image quality from a lithographic printing process.
    Type: Grant
    Filed: October 17, 1989
    Date of Patent: August 13, 1991
    Assignee: Hoechst Celanese Corporation
    Inventors: Stephan J. W. Platzer, Gabor I. Koletar
  • Patent number: 5019471
    Abstract: Multicolor image products useful for prepress color proofing. The products are laminates of a transfer support sheet; an adhesive layer of a heat-fusible and bondable material on a surface of said transfer support sheet; an image layer of a first color provided on the adhesive layer and having image areas of a water-insoluble resin component and non-image areas, the image areas being bonded to the surface of the adhesive layer; and one, two or three additional image layers each of a different color other than that of the first image layer.
    Type: Grant
    Filed: August 10, 1989
    Date of Patent: May 28, 1991
    Assignee: Sanyo-Kokusaku Pulp Co., Ltd.
    Inventors: Hisashi Mino, Takeshi Iijima, Kuniaki Monden
  • Patent number: 5008174
    Abstract: A photosensitive element which comprises a substrate having a release surface; a photosensitive layer having a photosensitizer, pigment, and mixture of binders with different solubility characteristics; and an adhesive layer coated directly on the photosensitive layer. The adhesive solution dissolves one of the resins in the photosensitive layer but does not dissolve the photosensitizer and the resin used to bind the pigment. During overcoating of the adhesive on the photosensitive layer, an increasing gradient of the soluble resin towards the adhesive layer and a decreasing gradient of the photosensitizer and nonsoluble resin is formed.
    Type: Grant
    Filed: October 21, 1989
    Date of Patent: April 16, 1991
    Assignee: Hoechst Celanese Corporation
    Inventor: Stephan J. W. Platzer
  • Patent number: 5002850
    Abstract: A photosensitive material comprises:(I) an undercoat layer containing at least one alcohol-soluble polyamide;(II) an alcohol-insoluble barrier layer; and(III) a coloring material-containing photosensitive layer or a laminate of a coloring material layer and a photosensitive layer superposed in order on a support to form a laminate.
    Type: Grant
    Filed: August 3, 1989
    Date of Patent: March 26, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Fumiaki Shinozaki, Kazuo Suzuki, Tamotsu Suzuki, Tomizo Namiki, Tomohisa Tago, Mikio Totsuka
  • Patent number: 4999266
    Abstract: The invention provides a photographic article having a protected image which comprisesa) a colored image disposed on a substrate; andb) a thin, transparent, colorless, thermoplastic adhesive composition directly on the surface of the image, wherein said adhesive is substantially non-tacky at room temperature, and comprises one or more thermoplastic polymers of copolymers capable of forming a flexible film, said adhesive being capable of being transferred directly to the image when the adhesive is first disposed on the release surface of a temporary support and said image and adhesive are laminated together under pressure at temperatures of between about 60.degree. C. and about 90.degree. C. and said temporary support is peeled away; andc) a non-self supporting antiblocking layer directly on said adhesive said antiblocking layer being transparent, colorless and comprises one or more organic polymers or copolymers, which coating does not cohesively block at about 50.degree. C. or less.
    Type: Grant
    Filed: December 6, 1989
    Date of Patent: March 12, 1991
    Assignee: Hoechst Celanese Corporation
    Inventors: Stephan J. W. Platzer, Mehmet U. Yener, Stanley F. Wanat
  • Patent number: 4987048
    Abstract: An image forming material comprising a support, a coloring material-containing organic polymer layer and a photosensitive resin layer in order in the form of a laminate, wherein the organic polymer of the organic polymer layer comprises a copolymer of an aralkyl (meth)acrylate and (meth)acrylic acid.
    Type: Grant
    Filed: August 7, 1989
    Date of Patent: January 22, 1991
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Fumiaki Shinozaki, Tomizo Namiki
  • Patent number: 4980260
    Abstract: A multicolor image-forming method which comprises image-exposing a light-sensitive heat-sensitive recording material having a diazo compound and a coupling component on a support using a positive image followed by developing to form a color image, image-exposing a light-solubilizing color image-forming material having a coloring material on a substantially transparent support using a positive image followed by developing to form a color image, and superposing the light-solubilizing color image-forming material having the color image on the light-sensitive heat-sensitive recording material having the color image or, further, heat-pressing the light-solubilizing color image-forming material having the color image superposed on the light-sensitive heat-sensitive recording material having the color image.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: December 25, 1990
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Fumiaki Shinozaki, Mikio Totsuka, Tomizo Namiki
  • Patent number: 4963462
    Abstract: This invention relates to positive working color proofing sheet construction which, upon exposure to an actinic radiation source through a screened image, can accuratley reprouce 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 base, diazo or diazide layer, photopolymerizable layer and cover sheet. Upon imagewise exposure, a positive image appears on the receiver base after dry peel apart development.
    Type: Grant
    Filed: January 8, 1990
    Date of Patent: October 16, 1990
    Assignee: Hoechst Celanese Corporation
    Inventor: Wojciech A. Wilczak
  • Patent number: 4950577
    Abstract: Presensitized sheets for color proofing comprising a removable carrier sheet bearing a photosensitive medium sensitive to radiation within the wavelength band 325 to 700 nm and comprising photohardenable, photoadherent, photoinsolubilisable or photosolubilisable material, the sheet including a removable antihalation layer which is removed either when stripping the carrier sheet or during subsequent processing. The antihalation dyes may be positioned within a transparent carrier sheet, in a layer on the carrier sheet opposite to the photosensitive medium or in a layer positioned between the carrier sheet and light-sensitive medium.
    Type: Grant
    Filed: May 23, 1985
    Date of Patent: August 21, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Duncan M. A. Grieve, Ronald W. Burrows, John Souter
  • Patent number: 4948693
    Abstract: This invention relates to positive working photosensitized 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 predict the image quality from a lithographic printing process.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: August 14, 1990
    Assignee: Hoechst Celanese Corporation
    Inventors: Richard L. Shadrach, Stephan J. W. Platzer, Gabor I. Koletar
  • Patent number: 4937168
    Abstract: This invention relates to an improved negative- or positive-working, single sheet color proofing method which can accurately reproduce said images on diverse paper stocks by using a carrier to transfer the processed images to paper receiver bases. The final construction is useful in predicting the image quality from a lithographic printing process.
    Type: Grant
    Filed: October 21, 1988
    Date of Patent: June 26, 1990
    Assignee: Hoechst Celanese Corporation
    Inventor: Stephan J. W. Platzer
  • Patent number: 4929532
    Abstract: The invention relates to negative photosensitized 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 predict the image quality from a lithographic printing process.
    Type: Grant
    Filed: April 12, 1989
    Date of Patent: May 29, 1990
    Assignee: Hoechst Celanese Corporation
    Inventor: Thomas A. Dunder
  • Patent number: 4914039
    Abstract: This invention relates to water developable, negative working photosensitized 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 predict the image quality from a lithographic printing process. The invention provides both overlay and transfer type proofing sheets which have good fingerprint resistance.
    Type: Grant
    Filed: April 20, 1988
    Date of Patent: April 3, 1990
    Assignee: Hoechst Celanese Corporation
    Inventor: Stanley F. Wanat
  • Patent number: 4889787
    Abstract: A positive-acting photosensitive proofing element is constructed with a thermal adhesive layer having a Tg between 45.degree. C. and 60.degree. C., said adhesive comprising a polymer or copolymer derived from an ethylenically unsaturated monomer and 0.5 to 40% by weight of a polyvinyl ether polymer as a flexibilizer.
    Type: Grant
    Filed: April 25, 1988
    Date of Patent: December 26, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Arlene K. Musser
  • Patent number: 4885225
    Abstract: Particulate organic polymeric beads in the thermal adhesive layer of prepress color proofing elements prevents adhesive blocking without optical interference or reduction in adhesive performance.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: December 5, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Michael B. Heller, Leonard W. Sachi, David R. Walbridge
  • Patent number: 4877697
    Abstract: A liquid crystal display having display filter elements in registration with display electrodes. The filters are produced using color proofing films which are imaged to produce a regular pattern of dots. Filter elements are illuminated by electrodes selection to produce changeable images.
    Type: Grant
    Filed: May 26, 1988
    Date of Patent: October 31, 1989
    Assignees: Hoechst Aktiengesellschaft, Hiechst Celanese Corporation
    Inventors: Hansjoerg W. Vollmann, George S. K. Wong, Dennis Bellville
  • Patent number: 4869993
    Abstract: This invention relates to positive working photosensitized 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 predict the image quality from a lithographic printing process. The element is composed of a substrate, colored photosensitive layer and adhesive layer. The adhesive layer contains an optical brightener compound which reduces residual yellow staining derived from the naphthoquinone diazide sensitizer.
    Type: Grant
    Filed: August 29, 1988
    Date of Patent: September 26, 1989
    Inventors: Wahib Farahat, Dennis J. Bellville, Richard L. Shadrach
  • Patent number: 4833066
    Abstract: In producing a transfer print, a lacquer layer is deposited on a substrate and, in turn, a color layer, an adhesive layer, another lacquer layer, a talcum layer and a photo layer are placed on the lacquer layer. After a portion of the photo layer is exposed, the non-exposed areas of the photo layer and the other layers in register with the non-exposed areas are removed. After the exposed area of the photo layer is removed along with selected subjacent layers, the end product includes the substrate and the remaining areas of the lacquer area on the substrate, the color layer and the adhesive layer.
    Type: Grant
    Filed: January 12, 1987
    Date of Patent: May 23, 1989
    Assignee: Grobena AG
    Inventor: Anton Fuchs
  • Patent number: 4808508
    Abstract: This invention relates to negative photosensitized 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 predict the image quality from a lithographic printing process.
    Type: Grant
    Filed: July 1, 1986
    Date of Patent: February 28, 1989
    Assignee: Hoechst Celanese Corporation
    Inventor: Stephan J. W. Platzer
  • Patent number: 4783390
    Abstract: A multi-color image forming material which is in the form of multiple layers on a support, and having, at least two photosensitive layers, the farthest layer from the support being the uppermost photosensitive layer, the photosensitive layers being formed from a water-soluble resin having photocrosslinking ability with diazo resin, a photosensitive water-soluble, organic solvent insoluble diazo resin, and a water dispersible coloring agent which can produce a color tone, each photosensitive layer having a coloring agent which can produce a different color tone; and at least one intermediate layer, each intermediate layer being positioned between each photosensitive layer and the next adjacent photosensitive layer, the intermediate layer being formed from a hydrophobic, water-resistant, organic solvent softenable resin.
    Type: Grant
    Filed: April 1, 1987
    Date of Patent: November 8, 1988
    Assignee: Sanyo-Kokusaku Pulp Co., Ltd.
    Inventors: Hisashi Mino, Norio Yabe, Takeshi Iijima
  • Patent number: 4777111
    Abstract: This invention relates to a composition and method for enhancing the contrast of images of an underlying photolithographic layer. A photographic element, including a photoresist layer, is applied to a substrate. The photoresist layer contains a contrast-enhancing layer including at least one light-sensitive compound capable of producing acidic photoproducts upon exposure to actinic radiation, at least one indicator dye that changes color on exposure to acidic conditions and at least one polymeric binder soluble in water or weakly alkaline aqueous solutions. The photographic element is exposed to active radiation sufficient to cause photobleaching of the contrast enhancement layer and exposure of the photoresist layer. The photographic element is exposed to actinic radiation sufficient to cause photobleaching of the contrast enhancement layer and exposure of the photoresist layer.
    Type: Grant
    Filed: March 23, 1987
    Date of Patent: October 11, 1988
    Assignee: Fairmount Chemical Company, Inc.
    Inventors: David B. Blumel, Albert S. Deutsch
  • Patent number: 4772533
    Abstract: This invention relates to positive working photosensitized 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 predict the image quality from a lithographic printing process.
    Type: Grant
    Filed: November 5, 1986
    Date of Patent: September 20, 1988
    Assignee: American Hoechst Corporation
    Inventors: Stephan J. W. Platzer, Gabor I. Koletar, Richard L. Shadrach
  • Patent number: 4762766
    Abstract: A dry transfer film and a method for preparing transfer characters therefrom in which the transfer film includes a carrier layer, a photosensitized color carrying layer disposed adjacent to the carrier layer and a photosensitized adhesive layer disposed adjacent to the color carrying layer. Both the color carrying and adhesive layers are photosensitive to certain respective wavelengths of the electromagnetic spectrum so that when exposed to such wavelengths, they become soluble in a respective solvent or solvents. The unexposed portions of these layers remain insoluble in such solvents.
    Type: Grant
    Filed: January 14, 1986
    Date of Patent: August 9, 1988
    Assignee: Kroy Inc.
    Inventor: Kenneth M. Melbye
  • Patent number: 4748101
    Abstract: An improved overlay proofing film comprising a substantially transparent polyester base film which is first coated on one or both sides with a non-light sensitive composition having a refractive index of about 1.6, said non-light sensitive composition consisting essentially of a copolymer of polymethyl methacrylate and methacrylic acid, said coated polyester base film having a second coating on either side thereon, said second coating comprising a light sensitive mixture of(a) a resinous binder;(b) a colorant; and(c) a light sensitive material.
    Type: Grant
    Filed: November 4, 1986
    Date of Patent: May 31, 1988
    Assignee: Hoechst Celanese Corporation
    Inventor: O. Alfred Barton
  • Patent number: 4737436
    Abstract: A method of forming an image on a substrate is described which comprises blending a desired coloring pigment, adding the coloring pigment to a water soluble photoresist, coating the substrate with the pigmented photoresist, exposing the photoresist to actinic radiation to harden the parts of the photoresist occupying the desired image area, and removing with a water based solvent the unexposed photoresist.
    Type: Grant
    Filed: November 18, 1985
    Date of Patent: April 12, 1988
    Assignee: Grafmark International Limited
    Inventor: Colin G. Thompson
  • Patent number: 4729935
    Abstract: A process for the production of photographic images utilizing a photographic element comprising a transparent support and a coating on the support comprising a diazonium composition having a light absorbency of about 45% or less, and a colorant composition, said coating having a light transmission of not more than about 0.1%.
    Type: Grant
    Filed: October 18, 1985
    Date of Patent: March 8, 1988
    Assignee: Hoechst Celanese Corporation
    Inventors: John E. Walls, Major S. Dhillon
  • Patent number: 4719169
    Abstract: The invention provides a method for protecting an image which comprises providing a colored image on a substrate and either:A. Applying an antiblocking layer to a release surface of a temporary support; bonding a thermoplastic adhesive layer to said antiblocking layer; laminating said applied support to said colored image via said adhesive; and peeling away said temporary support from said antiblocking layer; orB. applying a thermoplastic adhesive layer to a release surface of a first temporary support; applying an antiblocking layer onto a release surface of a second temporary support, laminating said adhesive onto said colored image and peeling away said first temporary support; and laminating said antiblocking layer onto said adhesive layer and peeling away said second temporary support;wherein said adhesive layer is substantially nontacky at room temperature, is laminated at temperatures between about 60.degree. C. and 90.degree. C.
    Type: Grant
    Filed: April 18, 1986
    Date of Patent: January 12, 1988
    Assignee: Hoechst Celanese Corporation
    Inventors: Stephan J. W. Platzer, Mehmet U. Yener, Stanley F. Wanat
  • Patent number: 4692397
    Abstract: A method of producing a light sensitive element wherein a substrate is coated with a photosensitive layer having a particular class of diazonium salts, a colorant and a polyvinyl acetal resin. Upon imagewise exposure it is developed with an aqueous composition of salts and surfactants in the absence of organic solvents.
    Type: Grant
    Filed: November 27, 1985
    Date of Patent: September 8, 1987
    Assignee: American Hoechst Corporation
    Inventor: Shuchen Liu
  • Patent number: 4670371
    Abstract: An image-forming method, wherein the uppermost photosensitive layer of a photosensitive coated face of the multicolor image-forming material is subjected to (A) pattern exposure and the non-exposed area (non-image area) is removed by washing with water and is then dried. Also, an image-forming process, wherein the second photosensitive layer from the top of the photosensitive coated face of a multicolor image-forming material is subjected to (B) pattern exposure through the upper intermediate layer which is contacted with the photosensitive layer and immersed into the organic solvent which softens the resin in the intermediate layer and does not dissolve the components in the photosensitive layer before and after the photocrosslinking reaction except for area on which the image is already formed on the upper layer thereof, the non-exposed area (non-image area) of the second photosensitive layer is removed together with the upper intermediate layer thereof by washing with water and is then dried.
    Type: Grant
    Filed: May 29, 1985
    Date of Patent: June 2, 1987
    Assignee: Sanyo-Kokusaku Pulp Co., Ltd.
    Inventors: Hisashi Mino, Norio Yabe, Takeshi Iijima
  • Patent number: 4666817
    Abstract: A light-sensitive color-proofing sheet is described for producing an image on various substrates. A light-sensitive continuous color layer is releasably attached to a carrier. Overlaying the color layer is a water-insoluble transparent colorless barrier layer. On the opposite surface of the barrier layer is a thermally laminable adhesive layer. Upon lamination of the sheet to a substrate, removal of the carrier and exposure to actinic radiation, the color layer is formed into an image, photomechanically, by removal of the non-image areas.
    Type: Grant
    Filed: December 30, 1985
    Date of Patent: May 19, 1987
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Leonard W. Sachi