Vesicular Process Patents (Class 430/152)
  • Patent number: 6794107
    Abstract: Vesicular images are formed by thermal imaging of imageable layers containing thermally imageable vesicular imaging compositions. The vesicular images can be used as masks for imaging printing plate precursors. In one aspect, a printing plate precursor made up of a flexible substrate; a photosensitive layer that contains a negative working photosensitive composition; an optional barrier layer; and the imageable layer is thermally imaged to produce an integral mask. Blanket exposure through the mask with ultraviolet and/or visible radiation followed by development produces a printing plate. The method is especially suited for the production of flexographic printing plates.
    Type: Grant
    Filed: January 23, 2003
    Date of Patent: September 21, 2004
    Assignee: Kodak Polychrome Graphics LLC
    Inventors: Ken-Ichi Shimazu, Kevin B. Ray, John Kalamen
  • Publication number: 20040081908
    Abstract: Vesicular images are formed by thermal imaging of imageable layers containing thermally imageable vesicular imaging compositions. The vesicular images can be used as masks for imaging printing plate precursors. In one aspect, a printing plate precursor made up of a flexible substrate; a photosensitive layer that contains a negative working photosensitive composition; an optional barrier layer; and the imageable layer is thermally imaged to produce an integral mask. Blanket exposure through the mask with ultraviolet and/or visible radiation followed by development produces a printing plate. The method is especially suited for the production of flexographic printing plates.
    Type: Application
    Filed: January 23, 2003
    Publication date: April 29, 2004
    Inventors: Ken-Ichi Shimazu, Kevin B. Ray, John Kalamen
  • Publication number: 20020068234
    Abstract: The invention relates to a recording material having a substrate and a negative-working, radiation-sensitive layer which contains a diazonium salt, at least one film-forming, polymeric binder and organic colored pigments, on the surface of which an organic polymeric dispersant has been adsorbed and which are additionally dispersed in an organic polymeric binder which does not permanently combine with the pigments chemically or physically. The dispersant generally has groups, in particular primary, secondary or tertiary amino groups or derivatives thereof, which act as anchor groups on the colored pigment particles. The pigments themselves are preferably phthalocyanine pigments. As a result of the predispersing, aggregation of the pigment particles is effectively prevented so that uniform coloration of the radiation-sensitive layer is achieved. During development of the imagewise exposed recording materials, the colored pigment particles form virtually no insoluble precipitates.
    Type: Application
    Filed: October 16, 2001
    Publication date: June 6, 2002
    Inventors: Michael Dorr, Andreas Elsasser
  • Patent number: 6007960
    Abstract: A process for producing a colored image by laminating a light-sensitive material comprising a temporary support film (i), a colored light-sensitive layer and a heat-activable adhesive layer onto an image-receiving material at elevated temperature and under pressure, subjecting the light-sensitive layer to imagewise exposure and developing by peeling off the support film, characterized in that the image-receiving material comprises a light-sensitive compound which, on irradiation, releases a gas which remains trapped in the image-receiving material in the form of gas bubbles. The advantage of the process is that, on irradiation under a halftone original, the size of the halftone dots in the coloured image produced on such an image-receiving material is optically reduced.
    Type: Grant
    Filed: April 16, 1997
    Date of Patent: December 28, 1999
    Assignee: Agfa-Gevaert
    Inventors: Karin Marz, Dieter Mohr, Dieter Bodenheimer, Manfred Hilger
  • Patent number: 5443938
    Abstract: A photosensitive printing member comprises a porous supporting member and a photosensitive layer formed on the porous supporting member. The photosensitive layer comprises a photosensitive material and a foaming material or filler melted or dispersed in the photosensitive material. A porous stamp plate can be formed with fewer process steps than the conventional method and without using a mold. As a result, a small number of photosensitive printing members can be used to produce various models of stamps.
    Type: Grant
    Filed: September 24, 1993
    Date of Patent: August 22, 1995
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventor: Jun Sakai
  • Patent number: 5413893
    Abstract: An optical information recording medium comprises (1) a base, (2) at least one recording film provided on the base, being capable of bringing about a change in light tranmittance upon being exposed to an optical and/or thermal energy of an incident laser beam, and (3) a reflective film provided on the recording film. The optical information recording medium can exhibit a high contrast and is interexchangeable with CD and LV.
    Type: Grant
    Filed: April 12, 1993
    Date of Patent: May 9, 1995
    Assignee: Daicel Chemical Industries, Ltd.
    Inventors: Harumichi Tsukada, Etsuji Akimoto, Masahiro Tsumura
  • Patent number: 5278023
    Abstract: Laser-addressable thermal transfer materials for producing color proofs, printing plates, films, printed circuit boards, and other media are disclosed. The materials contain a substrate coated thereon with a propellant layer wherein the propellant layer contains a material capable of producing nitrogen (N.sub.2) gas at a temperature of preferably less than about 300.degree. C.; a radiation absorber; and a thermal mass transfer material. The thermal mass transfer material may be incorporated into the propellant layer or in an additional layer coated onto the propellant layer. The radiation absorber may be employed in one of the above-disclosed layers or in a separate layer in order to achieve localized heating with an electromagnetic energy source, such as a laser. Upon laser induced heating, the transfer material is propelled to the receptor by the rapid expansion of gas.
    Type: Grant
    Filed: November 16, 1992
    Date of Patent: January 11, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Richard E. Bills, William V. Dower, Thomas A. Isberg, Stanley C. Busman, Jeffrey C. Chang, Minyu Li, Hsin-hsin Chou
  • 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: 4977070
    Abstract: Support layers for photosensitive media comprise reflective sheeting which is transparentizable. The properties of the support layer enable it to act as an antihalation layer.
    Type: Grant
    Filed: May 20, 1986
    Date of Patent: December 11, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: John M. Winslow
  • Patent number: 4853313
    Abstract: A printing plate formed of a substrate and laminated thereon in the following order a primer layer and a photosensitive layer containing a quinonediazide compound and a silicone rubber layer, wherein the primer layer contains 0.1 to 25% by weight of a quinonediazide group. The printing plate of the present invention is excellent in dot reproduction, hardly causes cracking in the photosensitive layer, and has a wide latitutde in production.
    Type: Grant
    Filed: April 10, 1987
    Date of Patent: August 1, 1989
    Assignee: Toray Industries, Inc.
    Inventors: Yoichi Mori, Shigeo Abiko, Mikio Tsuda, Chikara Ichijo
  • Patent number: 4833061
    Abstract: Photosensitive compositions having surfactant vesicles therein are described. A method is also shown in which the photosensitive vesicle containing an enclosed substance is exposed to light to control the release of the substance.
    Type: Grant
    Filed: April 6, 1987
    Date of Patent: May 23, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: David A. Tirrell
  • Patent number: 4695528
    Abstract: In order to be able, in a simple manner, to erase, by heating, data recorded on bodies with reversible, temperature-variable light extinctions, and then to be able to use the body anew for the recording of data, these bodies consists of at least one polymer material and/or resin matrix material (A) and at least one organic low-molecular substance (B), which is insoluble, at least partially, in the latter and which is contained therein as a dispersed second phase, whereby the pair of materials (A/B) possess variable light extinctions below a specific temperature (T.sub.0) in dependence on a previous heating above T.sub.0 and are so constituted that, upon being heated above a conversion temperature (T.sub.2) which lies above T.sub.0, and being cooled off subsequently to below T.sub.0, yields maximum light extinction; and, upon being heated in the state of maximum light extinction to a temperature (T.sub.1) which lies above T.sub.0 and below T.sub.2, and subsequent cooling off to below T.sub.
    Type: Grant
    Filed: September 28, 1982
    Date of Patent: September 22, 1987
    Assignee: Wolfgang Dabisch
    Inventors: Wolfgang H. Dabisch, Peter Kung, Siegfried R. Muller, Krishnamoorthy Narayanan
  • Patent number: 4656115
    Abstract: An improved vesicular matrix prepared by the emulsion polymerization of methacrylonitrile, either alone or with a small amount of comonomer, in the presence of a cationic emulsifier. The resulting polymer or copolymer can be used alone, or the polymer or copolymer may be blended with a small amount of a highly incompatible polymer or copolymer, to provide an improved vesicular matrix.
    Type: Grant
    Filed: November 22, 1985
    Date of Patent: April 7, 1987
    Assignee: James River Graphics, Inc.
    Inventors: Ahmad Arfaei, Everett W. Bennett
  • Patent number: 4654291
    Abstract: An improved vesicular matrix prepared by employing regulated inner incompatibility to produce enhanced nucleation. The inner incompatibility is produced by copolymerizing a first monomer with a small amount of a second monomer wherein a homopolymer of the second monomer would be incompatible with a polymer of the first monomer, or by blending a first polymer or copolymer with a small amount of a highly incompatible second polymer or copolymer.
    Type: Grant
    Filed: November 22, 1985
    Date of Patent: March 31, 1987
    Assignee: James River Graphics
    Inventor: Jan B. Suchy
  • Patent number: 4614701
    Abstract: A photocurable resin composition comprising(A) a copolymer composed of, as structural units,(a) 20 to 70% by weight of a hydroxyl group-containing acrylic monomer unit represented by the following formula ##STR1## wherein R.sub.1 and R.sub.2, independently from each other, represent a hydrogen atom, a methyl group or an ethyl group and n is 1, 2 or 3, and(b) 5 to 80% by weight of a nitrogen-containing acrylic monomer unit represented by the following formula ##STR2## wherein R.sub.3 represents a hydrogen atom or a methyl group, X represents 0 or NH, R.sub.4 represents a linear or branched alkylene group having 2 or 3 carbon atoms, R.sub.5, R.sub.6 and R.sub.7, independently from each other, represent a hydrogen atom or a linear or branched alkyl group having 1 to 4 carbon atoms and Y.sup..crclbar. represents an anion of an acid, and(B) a diazo compound or an azide compound.
    Type: Grant
    Filed: September 28, 1984
    Date of Patent: September 30, 1986
    Assignee: Sekisui Fine Chemical Co., Ltd.
    Inventors: Hirofumi Mori, Hitoshi Hori
  • Patent number: 4572886
    Abstract: A method for optically marking selected integrated circuit bars of visual identification. In one embodiment a layer for photosensitive material applied to a portion of all of the bars on a wafer prior to testing. Selected bars are marked by directing a beam of radiant energy at the photosensitive material, which changes opacity and/or color in the irradiated region.
    Type: Grant
    Filed: November 3, 1983
    Date of Patent: February 25, 1986
    Assignee: Texas Instruments Incorporated
    Inventor: Lee R. Reid
  • Patent number: 4515885
    Abstract: Vesicular imaging films have good speed and stable latent images when comprised of a diazonium compound, nitrate salt, and binder comprising gelatin or poly(vinyl alcohol). The film can even have highly stable final images when the binder comprises poly(vinyl alcohol).
    Type: Grant
    Filed: August 1, 1983
    Date of Patent: May 7, 1985
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Kenneth G. Gatzke, John M. Winslow
  • Patent number: 4508808
    Abstract: An improved diazotype photoprinting material of high printing speed and its method of preparation are disclosed. The improvement is achieved by distributing through the film coating a substantially uniform distribution of sites having a refractive index substantially different from that of the remainder of the coating. The sites consist of either voids or finely divided solids. Voids are created by contacting the film coating with an aqueous fluid at elevated temperature or an organic solvent for a sufficient period of time to cause a measurable haze to appear on the film. The sites operate to reflect or refract incident light rays during imagewise exposure, and thus increase the optical path length through a given thickness of film.
    Type: Grant
    Filed: November 12, 1982
    Date of Patent: April 2, 1985
    Assignee: Xidex Corporation
    Inventors: Wai-Hon Lee, Paul H. Voisin
  • Patent number: 4451550
    Abstract: Novel, coatable, highly long-chain branched, ungelled, most preferably endblocked, non-linear phenoxy resins of random structure devoid of regularly recurring units, with the average distance between the branch sites thereof being essentially of the same order of magnitude as the average branch length, such resins advantageously comprising the copolymerization product of:(i) at least one dihydric phenol, e.g., sulfonyl diphenol;(ii) an epoxy comonomer having two epoxy functional groups, e.g., resorcinol diglycidyl ether;(iii) a branching agent comprising an epoxy or phenolic compound having a functionality greater than 2, and preferably at least 3, wherein the amount of branching agent is sufficient to provide at least 10 mole percent branch sites in the polymer resin, and, most preferably;(iv) a monofunctional phenol or epoxide as an endblocker compound.The branched phenoxy resins are well adapted as matrices for enhanced film speed vesicular films.
    Type: Grant
    Filed: July 29, 1982
    Date of Patent: May 29, 1984
    Assignee: James River Graphics, Inc.
    Inventors: Everett W. Bennett, Ahmad Arfaei
  • Patent number: 4440840
    Abstract: A photographic image-processing method which is capable of obtaining, from negative and positive films having an image whose density is in continuous gradation, a linear image representing the contour of that image. This method comprises the step of sandwiching a light scattering film between the negative and positive films in registration, thereby making a mask, and exposing a photographic paper to light at a right angle by way of the mask which is placed on the photographic paper, with a result that the light which passes through the light transmissive portion of the negative film is subjected to course alteration by the scattering film is order to pass through the light transmissive portion of the positive film, with a result that a linear contour image of the original image is formed on the photographic paper.
    Type: Grant
    Filed: October 20, 1982
    Date of Patent: April 3, 1984
    Assignee: Toppan Printing Co., Ltd.
    Inventor: Takashi Yamaguchi
  • Patent number: 4431720
    Abstract: An improved rear-projection viewing screen is disclosed which is characterized by having on the viewed front surface of a lenticulated transparent substrate, a single layer having image-transmitting areas and intervening light-absorbing areas. The improved screen according to the invention includes light-scattering and photographically formed light-absorbing elements in a common binder system in the image-transmitting areas and in the intervening light-absorbing areas. The light-scattering elements provide for the diffusion of the viewed image in the light-transmitting areas. The light-scattering elements in the light-absorbing areas are effective to scatter light falling on the front surface of the screen thereby improving contrast of pictures viewed on the screen.
    Type: Grant
    Filed: July 19, 1982
    Date of Patent: February 14, 1984
    Assignee: Zenith Radio Corp.
    Inventor: Meyer L. Sugarman
  • Patent number: 4430414
    Abstract: Stabilizers for vesicular imaging compositions are shown. Derivatives of benzoic acid are used to improve the image stability of vesicular imaging compositions containing homopolymers or copolymers of .alpha.-chloroacrylonitrile, and a light-sensitive agent which decomposes and releases gas on irradiation.
    Type: Grant
    Filed: November 12, 1982
    Date of Patent: February 7, 1984
    Assignee: Minnesota Mining & Manufacturing Company
    Inventor: Jerome E. Swanson
  • Patent number: 4371602
    Abstract: The photosensitive printing plate of this invention features incorporation of an organic foaming agent in the photosensitive composition that constitutes the photosensitive layer, said organic foaming agent being thermally decomposed upon drying of said composition under heating to thereby roughen the surface of the photosensitive layer. According to this invention, no specific mechanical treatment is required for forming the photosensitive layer and also there is no need of remodeling the existing coating equipments, and further, the vacuum contact time can be appreciably lessened, so that this invention can greatly improve the working efficiency in plate making and markedly reduce the production cost.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: February 1, 1983
    Inventors: Hidenori Iwasaki, Junichi Igarashi, Shunichi Kasukawa
  • Patent number: 4363866
    Abstract: Process for forming a vesicular image utilizing a vesicular recording material having an imaging layer which includes a defined sulphone and/or sulphonamide additive in an amount of 1 to 100% by weight based upon the weight of a polymeric component of the plastics vehicle. The additive provides improved image density and a back-appearing image.
    Type: Grant
    Filed: April 14, 1981
    Date of Patent: December 14, 1982
    Assignee: Bedford Limited
    Inventors: Stuart C. Rennison, Ronald J. Stacey
  • Patent number: 4341862
    Abstract: Process for the production of vesicular recording materials. The photographic characteristics such as speed and contrast of vesicular recording materials are improved by treating the light-sensitive vesicular recording layer with an aqueous medium at 5.degree. to 30.degree. C. for at least 45 minutes. The treatment may be effected by spraying with cold water and winding the wet material into a roll. Water marking in the wound roll can be avoided by coating the recording layer prior to water treatment with an antimarking composition such as a solution of nitrocellulose.
    Type: Grant
    Filed: January 19, 1981
    Date of Patent: July 27, 1982
    Assignee: Bexford Limited
    Inventors: Stuart G. Clarke, William A. Craig
  • Patent number: 4339520
    Abstract: A light-sensitive vesicular recording material comprising a support and a layer comprised of a binder and a light-sensitive compound applied to the support, said binder comprising a butanone soluble copolymer of methacrylonitrile and vinylidene chloride; particularly, a mixture of a butanone soluble methacrylonitrile/vinylidene chloride copolymer and a vinylidene chloride/acrylonitrile copolymer, said copolymers being miscible with each other in butanone.
    Type: Grant
    Filed: March 31, 1981
    Date of Patent: July 13, 1982
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Markus Seibel, Bernd Huber, Irmgard Bindrum, Dieter Bodenheimer
  • Patent number: 4302524
    Abstract: A light-sensitive vesicular imaging composition comprising a vesiculating agent which liberates gas upon exposure to activating radiation and a matrix which is a novolac branched epoxy resin of a bis-glycidyl ether and a dihydric phenol.
    Type: Grant
    Filed: March 19, 1980
    Date of Patent: November 24, 1981
    Assignee: GAF Corporation
    Inventors: William L. Mandella, James R. Kuszewski
  • Patent number: 4293633
    Abstract: Reflex copying of original materials, normally having an opaque background, onto light-sensitive vesicular imaging materials wherein exposure to light is effected through a screen which transmits the incident light in separate bundles of light rays.
    Type: Grant
    Filed: November 23, 1979
    Date of Patent: October 6, 1981
    Assignee: Bexford Limited
    Inventors: Roy F. Huffey, John A. Pope
  • Patent number: 4291109
    Abstract: Disclosed herein is a method and apparatus for producing color transparencies on a recording element comprising an additive color filter screen having disposed thereon a coating of a visible light-transmissive, invisible light-sensitive, silverless material, preferably a diazo or vesicular material. The method comprises the steps of imagewise exposing a panchromatic auxiliary layer, e.g. a photoconductive layer, to a multicolored object, such exposure being made through the recording element of the invention. This step acts to produce in the auxiliary layer a monochrome image containing color image information of the multicolored object. Next, the silverless material is exposed to invisible actinic radiation, such exposure being made through the monochrome image formed in or on the panchromatic auxiliary layer. This step serves to transfer the color image information from the auxiliary layer to the silverless layer of the recording element.
    Type: Grant
    Filed: November 26, 1979
    Date of Patent: September 22, 1981
    Assignee: Eastman Kodak Company
    Inventor: Keith E. Whitmore
  • Patent number: 4272603
    Abstract: A vesicular photographic material comprising a polymeric matrix containing a sensitizer which liberates gas when exposed to light, and a process for manufacture of said material. The polymeric matrix comprises a blend of polymethacrylonitrile homopolymer with another resin selected from the group consisting of vinyl polymers and copolymers; epoxy polymers; and copolymers with polyurethane segments. Improved photometrics, particularly film speed, are realized.
    Type: Grant
    Filed: November 6, 1979
    Date of Patent: June 9, 1981
    Inventors: Donald J. Chenevert, John R. Grawe, John C. McDaniel
  • Patent number: 4219616
    Abstract: Vesicular recording materials incorporate a sensitized layer comprising, as vehicle for the sensitizing agent, a quaternized polyelectrolyte, e.g. preferably polymers of dimethylamino ethyl methacrylate. The water sensitivity of the preferred polymers is reduced by copolymerisation with insolubilizing comonomers such as itaconic acid.
    Type: Grant
    Filed: November 20, 1978
    Date of Patent: August 26, 1980
    Assignee: Imperial Chemical Industries Limited
    Inventors: John A. Pope, Stuart C. Rennison, Ronald J. Stacey
  • Patent number: 4215191
    Abstract: Vesicular recording materials include a sensitized layer which comprises a polymeric vehicle for the sensitizing agent which is a copolymer of 62 to 95 mole % of acrylonitrile or a derivative thereof with acrylamide or a derivative thereof. Preferred copolymers are derived from acrylonitrile and N-tert.butyl acrylamide or diacetone acrylamide. The sensitized layers may contain a surfactant and may be subjected to water treatment.
    Type: Grant
    Filed: February 5, 1979
    Date of Patent: July 29, 1980
    Assignee: Bexford Limited
    Inventor: John C. Kwok
  • Patent number: T990001
    Abstract: Light-sensitive vesicular imaging materials, suitable for the production of colored labels, etc., comprise a light-sensitive vesicular imaging layer applied to one surface of a transparent self-supporting plastics sheet or film such as a linear polyester, e.g. polyethylene terephthalate film, said light-sensitive vesicular imaging layer comprising a polymeric vehicle having uniformly dispersed therein a sensitizing agent which releases a vesicle-forming gas, preferably nitrogen, upon exposure to light and optionally including a pigment or dye, said polymeric vehicle comprising a thermoplastic polymer having a nitrogen permeability constant in the range 1.times.10.sup.-15 to 1.times.10.sup.
    Type: Grant
    Filed: May 9, 1979
    Date of Patent: January 1, 1980
    Assignee: Bedford Limited
    Inventors: Roy F. Huffey, David E. Lothian, Stuart C. Rennison, Michael K. Titman
  • Patent number: T996002
    Abstract: Vesicular recording materials are described which include a sensitized layer comprising a polyeric vehicle for the sensitizing agent which is an acrylonitrile/substituted or unsubstituted styrene copolymer with at least 55 mole % of acrylonitrile and preferably less than 85 mole %. The copolymer is usually homogeneous and preferably derived from acrylonitrile and the styrene comonomer along and most preferably contains from 65 to 82 mole % of acrylonitrile. The copolymer is softenable on heating to permit the gas released by the sensitizing agent in the light struck areas to form light-scattering or reflecting vesicles therein.A surfactant in an amount of at least 1% by weight, based on the weight of the copolymer, is essential to vesiculation and anionic surfactants are especially effective in providing a wide tonal range and good speed rating, amounts up to 20% by weight being preferred.
    Type: Grant
    Filed: October 23, 1979
    Date of Patent: July 1, 1980
    Assignee: Bexford Limited
    Inventor: John C. Kwok