Using Identified Developer Patents (Class 430/435)
  • Patent number: 7300740
    Abstract: A lithographic printing plate precursor capable of forming an image without alkali development, comprising a hydrophilic support and a laser-sensitive photopolymerizable layer, wherein the photopolymerizable layer or other layer included in the lithographic printing plate precursor contains a copolymer containing at least a repeating unit having at least one ethylenically unsaturated bond and a repeating unit having at least two functional groups capable of interacting with a surface of the support or a copolymer containing at least a repeating unit having at least two ethylenically unsaturated bonds and a repeating unit having at least one functional group capable of interacting with a surface of the support.
    Type: Grant
    Filed: February 27, 2006
    Date of Patent: November 27, 2007
    Assignee: Fujifilm Corporation
    Inventors: Sumiaki Yamasaki, Akihiro Endo
  • Patent number: 7273692
    Abstract: Disclosed are a planographic printing plate material and a planographic printing plate preparing process, the planographic printing plate material comprising a support and provided thereon, an image formation layer containing a colorant (a) having an absorption band in a wavelength region of from 700 to 1200 nm, a polymerization initiator (b) and a polymerizable ethylenically unsaturated compound (c), wherein the polymerization initiator (b) is a compound represented by the formula R1—CX2—(C?O)—R2.
    Type: Grant
    Filed: July 20, 2004
    Date of Patent: September 25, 2007
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventor: Toshiyuki Matsumura
  • Patent number: 7244543
    Abstract: A positive-working lithographic printing starting plate for an infrared laser is provided that includes a support having a hydrophilic surface and a heat-sensitive layer provided above the support. The heat-sensitive layer includes a water-insoluble and alkali-soluble resin, an infrared-absorbing dye, and a sulfonium salt represented by Formula below. The heat-sensitive layer increases its solubility in aqueous alkaline solution upon exposure to an infrared laser.
    Type: Grant
    Filed: September 22, 2004
    Date of Patent: July 17, 2007
    Assignee: Fujifilm Corporation
    Inventor: Toshiaki Aoai
  • Patent number: 7244546
    Abstract: A planographic printing plate precursor includes a substrate and an image recording layer provided thereon, the image recording layer being capable of recording through exposure to an infrared ray and containing at least (A) an infrared absorbing agent, (B) a polymerization initiator comprising an onium salt formed by an onium cation and a carboxylic acid anion, where the carboxylic acid anion has an acid group, a hetero atom and an aromatic group, (C) a polymerizable compound and (D) a binder polymer. The planographic printing plate precursor is exposed imagewise with an infrared laser. Then, printing is carried out using the exposed planographic printing plate precursor, which is set in a printer without being subjected to any developing process, by feeding an oil based ink and an aqueous component onto the planographic printing plate precursor. Unexposed areas of the planographic printing plate precursor are removed during the printing process.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: July 17, 2007
    Assignee: Fujifilm Corporation
    Inventors: Kazuto Shimada, Tomoyoshi Mitsumoto
  • Patent number: 7238462
    Abstract: This invention provides an undercoating layer material and a filler material containing a resin component having at least a substituent group which is capable of releasing a terminal group to form a sulfonic acid residue upon application of predetermined energy, and a solvent. The resin component has at least a repeating unit represented by formula (1): wherein n is an integer of 1 or more, X represents a C1 to C10 linear or branched alkyl chain, an aromatic or alicyclic alkyl chain or an alkyl ester chain, and Y is a substituent group forming a sulfonic acid residue upon application of predetermined energy.
    Type: Grant
    Filed: November 26, 2003
    Date of Patent: July 3, 2007
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Etsuko Nakamura, Kazumasa Wakiya
  • Patent number: 7232649
    Abstract: An improved method of manufacturing a photosensitive printing element that minimizes relief variation and improves image fidelity. The method involves a step of pre-curing the first (floor layer) of photocurable material prior to depositing an additional layer or layers of photocurable material that may be imaged and developed to produce a desired relief image on the surface of the photosensitive printing element. The photosensitive printing element is then thermally developed by contacting the photosensitive printing element with at least one roll that is capable of moving over at least a portion of the imaged surface of the flexographic printing element to remove the softened or melted non-crosslinked photopolymer.
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: June 19, 2007
    Inventor: Ryan Vest
  • Patent number: 7229744
    Abstract: A method for preparing lithographic printing plates is disclosed. Imaged positive-working, thermally imageable, multi-layer imageable elements useful as lithographic printing plate precursors are developed using solvent based developers. Development may be carried out by immersing the imaged imageable element in the developer.
    Type: Grant
    Filed: March 21, 2003
    Date of Patent: June 12, 2007
    Assignee: Eastman Kodak Company
    Inventor: Jayanti Patel
  • Patent number: 7214468
    Abstract: A lithographic printing plate material is disclosed, comprising a flexible support having thereon a hydrophilic layer and an image forming layer, wherein the flexible support having the hydrophilic layer exhibits a transmission density of 0.5 to 1.2, and the outermost surface of an unexposed area of the image forming layer exhibiting a glossiness of 0.1 to 10. A printing method is also disclosed.
    Type: Grant
    Filed: March 10, 2004
    Date of Patent: May 8, 2007
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Rieko Takahashi, Masaki Miyoshi
  • Patent number: 7214472
    Abstract: Disclosed is a printing plate material comprising a surface roughened aluminum support, and provided thereon, an image formation layer containing a heat-curable polymer having a main chain polymer in the main chain, and an acryloyl group or a methacryloyl group in the side chain, a glass transition temperature Tg of the main chain polymer being from 0 to 100° C., wherein the printing plate material is capable of being developed on a printing press.
    Type: Grant
    Filed: April 11, 2005
    Date of Patent: May 8, 2007
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventor: Yasunobu Kobayashi
  • Patent number: 7198876
    Abstract: A method for preparation of a lithographic printing plate, which comprises the steps of: imagewise recording on a lithographic printing plate precursor comprising a support having a hydrophilic surface and a thermosensitive layer, the thermosensitive layer comprising at least one of polymer particles and a microcapsule encapsulating an oleophilic compound therein; and rubbing the printing plate precursor by a rubbing member in the presence of a processing liquid to remove the thermosensitive layer of non-image portions.
    Type: Grant
    Filed: April 23, 2003
    Date of Patent: April 3, 2007
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Toshifumi Inno
  • Patent number: 7198883
    Abstract: A positive-working, heat-sensitive material for making a lithographic printing plate by direct-to-plate recording is disclosed. The material comprises a hydrophobized grained and anodized aluminum support and a layer comprising a compound capable of converting light into heat provided onto said support, said support being obtainable by RF plasma treatment of a grained and anodized aluminum support in the presence of a fluorine containing gas.
    Type: Grant
    Filed: September 16, 2005
    Date of Patent: April 3, 2007
    Assignee: AGFA-Gevaert
    Inventors: Hieronymus Andriessen, Catherine Brigouleix, Alain Tressaud
  • Patent number: 7189494
    Abstract: The present invention provides an imageable element including a lithographic substrate and an imageable layer disposed on the substrate. The imageable layer includes a radically polymerizable component, an initiator system, and a polymeric binder. The imageable element further includes a tetraarylborate salt. The presence of the tetraarylborate salt may provide improved imaging speed and may enhance press life due to better adhesion between the imageable layer and the substrate. The tetraarylborate salt may be present in the imageable layer, an interlayer, or a separate layer between the substrate and the imageable layer. The imageable element may be imaged and mounted on-press without a separate development step.
    Type: Grant
    Filed: May 26, 2005
    Date of Patent: March 13, 2007
    Assignee: Eastman Kodak Company
    Inventors: Elizabeth Knight, Paul R. West
  • Patent number: 7175964
    Abstract: Disclosed is a manufacturing process of a printing plate material comprising a boehmite treated aluminum support, and provided thereon, an image formation layer containing water soluble resins or water dispersible resins, the process comprising the steps of surface roughening an aluminum plate, anodizing the surface roughened aluminum plate, boehmite treating the anodized aluminum plate to produce the boehmite treated aluminum support having boehmite protrusions with an average height of from 30 to 200 nm and an average base size of from 10 to 100 nm, coating a coating solution for the image formation layer on the resulting aluminum support to form a coated layer, and drying the coated layer to form the image formation layer on the aluminum support.
    Type: Grant
    Filed: January 18, 2005
    Date of Patent: February 13, 2007
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventor: Yasunobu Kobayashi
  • Patent number: 7172854
    Abstract: A color developer solution is disclosed, comprising p-phenylenediamine type color developing agents, wherein 2% to 35% by weight of the p-phenylenediamine color developing agents is accounted for by a N-hydroxyalkyl-substituted p-phenylenediamine color developing agent, and the color developer solution further comprising a compound represented by the following formula (1) or (2):
    Type: Grant
    Filed: November 3, 2004
    Date of Patent: February 6, 2007
    Assignee: Konica Minolta Photo Imaging, Inc.
    Inventor: Satoru Kuse
  • Patent number: 7163779
    Abstract: Disclosed is a process of manufacturing a planographic printing plate from a planographic printing plate material comprising a support and provided thereon, at least one of an image formation layer and an ablation layer, the process comprising the steps of imagewise exposing the planographic printing plate material, and developing the exposed planographic printing plate material by supplying printing ink containing at least one of a polymerizable monomer and a polymerizable oligomer to the exposed planographic printing plate material.
    Type: Grant
    Filed: December 2, 2004
    Date of Patent: January 16, 2007
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventor: Saburou Hiraoka
  • Patent number: 7153627
    Abstract: A negative-working CTP plate which is superior in resolution and printing resistance of the image area of a press plate is provided, which is obtained by forming a latent image on a heat-sensitive layer in a heat-sensitive lithographic printing plate comprising a substrate having a hydrophilic surface and a heat-sensitive layer made of an alkali-soluble polymer formed on the surface of the substrate, using heat generated upon irradiation with laser light, and developing the heat-sensitive layer using an alkaline developing solution. In the heat-sensitive lithographic printing plate comprising a substrate having a hydrophilic surface, and a heat-sensitive layer made of an alkali-soluble polymer formed on the surface of the substrate, an advancing contact angle (?f1) of the surface of the heat-sensitive layer with water at 25° C. is within a range from 70° to 110°, a receding contact angle (?b2) of the surface of the heat-sensitive layer with water at 25° C. after heating at 150° C.
    Type: Grant
    Filed: September 12, 2003
    Date of Patent: December 26, 2006
    Assignee: Dainippon Ink and Chemicals, Inc.
    Inventors: Yasuyuki Watanabe, Naohito Saito, Hisatomo Yonehara, Yasuyuki Suzuki
  • Patent number: 7147989
    Abstract: A photosensitive composition comprising, a polymerizable compound having an ethylenically unsaturated group, a metallic arene compound, and an acid generating agent, wherein, the polymerizable compound is a multifunctional acrylate compound containing an amide bond and a secondary or tertiary amine group in the molecule, and the acid generating agent is a compound containing a trihalomethyl group, a dihalomethyl group or a dihalomethylene group.
    Type: Grant
    Filed: February 2, 2004
    Date of Patent: December 12, 2006
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Takaaki Kuroki, Kazuyoshi Suzuki
  • Patent number: 7141353
    Abstract: The present invention provides a PS plate for use in making a lithographic printing plate, comprising an aluminum substrate provided thereon with a light-sensitive layer comprising a polyurethane resin binder, an addition polymerizable ethylenically unsaturated bond-containing compound and a photopolymerization initiator, wherein the polyurethane resin binder is one synthesized from at least the following compounds (i) to (iv): (i) at least one di-isocyanate compound; (ii) at least one diol compound having at least one carboxyl group; (iii) at least one diol compound whose log P value is less than 0; and (iv) at least one diol compound whose log P value is higher than 0.
    Type: Grant
    Filed: March 13, 2003
    Date of Patent: November 28, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yasuhito Oshima
  • Patent number: 7138219
    Abstract: Disclosed is a planographic printing plate material comprising a hydrophilic support and provided thereon, a light sensitive layer and an overcoat layer in that order, wherein the light sensitive layer contains (a) an alkali soluble polymer, (b) a polymerizable compound having an ethylenically unsaturated bond, (c) a polymerization initiator, and (d) an anionic dye represented by the following formula (1),
    Type: Grant
    Filed: August 20, 2004
    Date of Patent: November 21, 2006
    Assignee: Konica Minolta Medical & Graphic, Inc.
    Inventor: Takaaki Kuroki
  • Patent number: 7105276
    Abstract: A heat mode type negative image recording material is provided which comprises (A) a polymer compound that is insoluble in water but is soluble in an alkali aqueous solution and has at least one of groups represented by general formulae (1) to (3) on a side chain; (B) a photothermal conversion agent; and (C) an onium salt compound forming radicals by heat mode exposure with light that is capable of being absorbed by said photothermal conversion agent (B), said heat mode type negative image recording material being capable of recording an image by heat mode exposure. The general formulae are defined in the specification.
    Type: Grant
    Filed: March 1, 2005
    Date of Patent: September 12, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazuhiro Fujimaki, Tadahiro Sorori, Keitaro Aoshima
  • Patent number: 7081330
    Abstract: A method of making a printing plate from a heat-sensitive PS plate of a positive-working mode for lithographic printing includes the steps of exposing the heat-sensitive PS plate to light and developing the PS plate using an alkaline developing solution containing at least one compound selected from the group consisting of cationic surfactants and compounds having three or more of an ethylene oxide-terminal group in the molecule thereof. The PS plate has a substrate and an image forming layer formed thereon, said image forming layer comprising a lower layer which is formed on the substrate and contains a water-insoluble and alkali-soluble resin and an upper heat-sensitive layer which is overlaid on the lower layer and contains a water-insoluble and alkali-soluble resin and an infrared absorption dye and exhibits an elevated solubility with respect to alkaline aqueous solutions when heated.
    Type: Grant
    Filed: September 17, 2003
    Date of Patent: July 25, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Shuichi Takamiya
  • Patent number: 7063937
    Abstract: A method for making a lithographic printing plate comprising the steps of: light-exposing to infrared radiation, a heat-sensitive presensitized plate of a positive-working mode for use in making a lithographic printing plate, said presensitized plate comprising a substrate and an image recording layer which is formed thereon and comprises a novolak resin containing xylenol as a monomer component and an infrared absorbing dye; and developing the light-exposed plate with an alkaline developing solution comprising at least one surfactant selected from the group consisting of anionic surfactants and amphoteric surfactants.
    Type: Grant
    Filed: March 25, 2004
    Date of Patent: June 20, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Shuichi Takamiya
  • Patent number: 7045269
    Abstract: A method for forming images useful as lithographic printing plate precursors is disclosed. An imageable element in which the imageable layer comprises an acid generator, a crosslinking agent, and a binder is imaged with ultraviolet radiation and developed with a solvent based developer. The acid generator is an iodonium, sulfonium, or diazonium salt in which the anion is an organic sulfate or thiosulfate anion. The binder comprises a copolymer that contains a reactive pendent group capable of undergoing acid crosslinking, in which the reactive pendent group is hydroxyl, carboxylic acid, sulfonamide, alkoxymethyl, or a mixture thereof. The method is especially suited for use with direct digital ultraviolet imaging devices. The resulting image is useful as a lithographic printing plate.
    Type: Grant
    Filed: November 21, 2003
    Date of Patent: May 16, 2006
    Assignee: Eastman Kodak Company
    Inventors: Jeffrey Collins, Thomas Jordan, Joanne Ray, Ting Tao, Chris McCullough, Scott A. Beckley, Jianbing Huang
  • Patent number: 7018773
    Abstract: Disclosed are a printing plate material comprising a substrate and provided thereon, a component layer comprising a hydrophilic layer and an image formation layer, the hydrophilic layer being provided closer to the substrate than the image formation layer, wherein the hydrophilic layer contains an electron providing dye precursor, the image formation layer contains an organic electron accepting developing agent, and the component layer contains a light heat conversion material.
    Type: Grant
    Filed: September 22, 2003
    Date of Patent: March 28, 2006
    Assignee: Konica Corporation
    Inventor: Takahiro Mori
  • Patent number: 7018777
    Abstract: A method of making a printing plate from a heat-sensitive PS plate of a positive-working mode for lithographic printing includes the steps of exposing the heat-sensitive PS plate to light and developing the PS plate using an alkaline developing solution containing at least one surfactant selected from the group consisting of anionic surfactants and ampholytic surfactants, and a salt selected from the group consisting of alkali metal salts and ammonium cation salts. The PS plate has a substrate and an image forming layer formed thereon, the image forming layer including a lower layer which is formed on the substrate and contains a water-insoluble and alkali-soluble resin and an upper heat-sensitive layer which is overlaid on the lower layer and contains a water-insoluble and alkali-soluble resin and an infrared absorption dye and exhibits an elevated solubility with respect to alkaline aqueous solutions when heated.
    Type: Grant
    Filed: September 10, 2003
    Date of Patent: March 28, 2006
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Hironori Ohnishi
  • Patent number: 6949327
    Abstract: Thermally imageable elements useful as on-press developable lithographic printing plate precursors are disclosed. The elements comprise a substrate and a layer of an imageable composition over the substrate. The imageable composition comprises a photothermal conversion material, particles of a polyurethane polymer, and, optionally, a water soluble polymer. The polyurethane polymer comprises urethane linkages in the main chain, but does not comprise side chain urethane groups.
    Type: Grant
    Filed: July 9, 2003
    Date of Patent: September 27, 2005
    Assignee: Kodak Polychrome Graphics LLC
    Inventors: Shiying Zheng, Elizabeth Knight, S. Peter Pappas
  • Patent number: 6939663
    Abstract: The present invention provides a thermally sensitive composition that may be coated as a water-borne material onto a substrate to yield a printing plate precursor having an imageable coating. The thermally sensitive composition comprises a sulfated phenolic resin. The sulfated phenolic resin may be a sulfated novolak resin or a sulfated resole resin, for example. The thermally sensitive composition may include a water-soluble binder, such as polyvinyl pyrrolidone, and a radiation-absorbing component. The invention also provides a printing plate precursor that is developed in water after imaging. The precursor does not require chemical development with a developing solution containing organic solvents or inorganic additives. The imaged precursor is on-press-developable when used with a fountain solution. Methods for making and using the precursor are also provided.
    Type: Grant
    Filed: July 8, 2003
    Date of Patent: September 6, 2005
    Assignee: Kodak Polychrome Graphics LLC
    Inventors: Ting Tao, Scott A. Beckley, John Kalamen, Kevin Barry Ray
  • Patent number: 6919166
    Abstract: A method for preparing a lithographic printing plate is disclosed, and said method comprises the steps of imagewise light-exposing to infrared radiation, a presensitized plate for use in making a lithographic printing plate, said presensitized plate having an image-forming layer which comprises an IR-absorbing agent, and developing the light-exposed plate with an alkaline liquid developer comprising a polyhydric alcohol-type alkylene oxide adduct.
    Type: Grant
    Filed: February 11, 2003
    Date of Patent: July 19, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Shuichi Takamiya
  • Patent number: 6916595
    Abstract: A heat mode type negative image recording material is provided which comprises (A) a polymer compound that is insoluble in water but is soluble in an alkali aqueous solution and has at least one of groups represented by general formulae (1) to (3) on a side chain; (B) a photothermal conversion agent; and (C) an onium salt compound forming radicals by heat mode exposure with light that is capable of being absorbed by said photothermal conversion agent (B), said heat mode type negative image recording material being capable of recording an image by heat mode exposure. The general formulae are defined in the specification.
    Type: Grant
    Filed: August 21, 2001
    Date of Patent: July 12, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Kazuhiro Fujimaki, Tadahiro Sorori, Keitaro Aoshimā
  • Patent number: 6902866
    Abstract: Negative thermosensitive lithographic printing plates comprise on a hydrophilic substrate an oleophilic thermosensitive layer comprising a polymeric binder, urethane (meth)acrylate monomer having at least 6 (meth)acrylate groups, a non-urethane (meth)acrylate monomer having at least 4 (meth)acrylate groups, a free-radical initiator, and an infrared absorbing dye; wherein the weight ratio of said urethane (meth)acrylate monomer to said non-urethane (meth)acrylate monomer is from 0.10 to 3.0, and said thermosensitive layer is capable of hardening upon exposure to an infrared radiation. Lithographic plates with such compositions have excellent press durability.
    Type: Grant
    Filed: November 24, 2003
    Date of Patent: June 7, 2005
    Inventor: Gary Ganghui Teng
  • Patent number: 6893798
    Abstract: A method for treating a micro-emulsion that can be used for removing the ink-accepting areas of a lithographic printing master is disclosed, which enables to recycle the water from the used micro-emulsion. The method comprises the heating of the micro-emulsion to a temperature above 50° C. thereby obtaining an aqueous phase and an organic phase and separating the aqueous phase from the organic phase.
    Type: Grant
    Filed: November 2, 2001
    Date of Patent: May 17, 2005
    Assignee: Agfa-Gevaert
    Inventors: Eric Verschueren, Peter Geerts
  • Patent number: 6861202
    Abstract: A method for treating a photosensitive lithographic printing plate, which comprises exposing the photosensitive lithographic printing plate to laser light, developing with a developer containing an alkali metal silicate and then carrying out post-exposure treatment, said photosensitive lithographic printing plate being prepared by forming a photopolymerizable photosensitive layer having a film thickness of from 1.2 to 4 g/m2 and further forming a protective layer having a film thickness of from 2 to 8 g/m2 on a support having a centerline average height (Ra) of at least 0.35 ?m.
    Type: Grant
    Filed: March 5, 2003
    Date of Patent: March 1, 2005
    Assignee: Lastra S.p.A.
    Inventors: Eriko Toshimitsu, Hideaki Okamoto
  • Patent number: 6841336
    Abstract: A plate-making method of a lithographic printing plate comprising exposing imagewise a photosensitive lithographic printing plate comprising an aluminum support and a photosensitive layer comprising a photosensitive composition of photopolymerization type, which contains a compound having a nitrogen atom and an ethylenically unsaturated double bond, a photopolymerization initiator and a polymer binder, and developing the exposed printing plate with a developing solution containing (1) an inorganic alkali agent and (2) a nonionic surface active agent having a polyoxyalkylene ether group.
    Type: Grant
    Filed: October 16, 2001
    Date of Patent: January 11, 2005
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Shunichi Kondo
  • Patent number: 6830874
    Abstract: A method for preparing a lithographic printing plate which comprises imagewise exposing to light a presensitized plate useful for making a lithographic printing plate having an intermediate layer and a photosensitive layer on an aluminum substrate in this order and developing the imagewise exposed plate with a developer, wherein said intermediate layer comprises a polymer compound comprising at least a structure unit having an acid group and a structure unit having an onium group and said developer comprises an inorganic alkali salt and a nonionic surfactant having polyoxyalkylene ether group and pH of the developer ranges from 11.0 to 12.7. The method provides a lithographic printing plate, which shows good contrast between an image area and non-image area, no background contamination during printing, good stability with time and good printing durability.
    Type: Grant
    Filed: July 3, 2002
    Date of Patent: December 14, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shun-ichi Kondo, Yuichi Shiraishi
  • Publication number: 20040241572
    Abstract: The present invention provides a top coat layer for a printing plate precursor. The top coat layer includes polycyanoacrylate particles, but is substantially free of photothermal conversion material. The topcoat layer may be applied onto a thermally sensitive layer containing polycyanoacrylate particles and a photothermal conversion material. The top coat layer may reduce ablation during radiation exposure without adversely affecting printing plate performance.
    Type: Application
    Filed: May 27, 2003
    Publication date: December 2, 2004
    Inventors: James Laurence Mulligan, Eric Clark
  • Patent number: 6811952
    Abstract: A photopolymerization process is disclosed, which comprises exposing a photosensitive lithographic printing plate containing at least one of sensitizing dyes represented by the following general formula (I) to laser beam having a wavelength of not greater than 450 nm: wherein T represents OR, SR, N(R)2 or SO2R and at least one T is present in the ortho or para position of the vinyl group, with the proviso that when the site at which Y is connected to the phenyl ring is an oxygen atom, sulfur atom or nitrogen atom, T may not be present; X represents an oxygen atom, sulfur atom or NR; Y represents a nonmetallic atom group which forms a ring with the adjacent carbon atoms; and R's each represent a hydrogen atom or nonmetallic atom group and may be connected to each other.
    Type: Grant
    Filed: July 5, 2002
    Date of Patent: November 2, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventor: Yasubumi Murota
  • Patent number: 6811950
    Abstract: The present invention relates to a presensitized plate useful for making a lithographic printing plate comprising an intermediate layer and a photopolymerizable photosensitive layer on an aluminum substrate in this order, wherein the roughness of a surface of said aluminum substrate (Ra) is in the range of 0.2 to 0.55 &mgr;m and the intermediate layer comprises a polymer compound comprising at least one monomer unit having a sulfonic acid group and a method for making a lithographic printing plate by imagewise exposing the presensitized plate described above and developing the imagewise exposed presensitized plate with a developer comprising an inorganic alkali salt and a nonionic surfactant comprising a polyoxyalkylene ether group. The presensitized plate or the method of the present invention provides a lithographic printing plate showing good contrast between an image area and non-image area, no background contamination during printing, good stability with time and good printing durability.
    Type: Grant
    Filed: January 25, 2002
    Date of Patent: November 2, 2004
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Shunichi Kondo, Fumikazu Kobayashi, Mitsumasa Tsuchiya
  • Patent number: 6730457
    Abstract: Thermally imageable elements and methods for their preparation and use are disclosed. The elements contain, in order, a substrate; an underlayer; and an ink-repellent layer. The underlayer contains a crosslinked allyl functional polyurethane. A photothermal conversion material is present in either in the underlayer or in an absorber layer between the underlayer and the ink-repellent layer. Thermal imaging and development removes the ink-repellent layer and reveals the underlayer in the exposed regions to form an imaged element useful as a waterless lithographic printing plate.
    Type: Grant
    Filed: July 5, 2002
    Date of Patent: May 4, 2004
    Assignee: Kodak Polychrome Graphics LLC
    Inventors: Shashikant Saraiya, Xing Fu Zhong, Jianbing Huang, S. Peter Pappas
  • Publication number: 20040063036
    Abstract: A method of making a printing plate from a heat-sensitive PS plate of a positive-working mode for lithographic printing includes the steps of exposing the heat-sensitive PS plate to light and developing the PS plate using an alkaline developing solution containing at least one compound selected from the group consisting of cationic surfactants and compounds having three or more of an ethylene oxide-terminal group in the molecule thereof. The PS plate has a substrate and an image forming layer formed thereon, said image forming layer comprising a lower layer which is formed on the substrate and contains a water-insoluble and alkali-soluble resin and an upper heat-sensitive layer which is overlaid on the lower layer and contains a water-insoluble and alkali-soluble resin and an infrared absorption dye and exhibits an elevated solubility with respect to alkaline aqueous solutions when heated.
    Type: Application
    Filed: September 17, 2003
    Publication date: April 1, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventor: Shuichi Takamiya
  • Publication number: 20040058273
    Abstract: A presensitized plate in which an image recording layer is formed on a support for a lithographic printing plate obtainable by performing a treatment with an aqueous solution containing one or more divalent or multivalent cations at a concentration ranging from 0.0001 mol/L to less than 0.020 mol/L is excellent in both scum resistance and press life when processed into a lithographic printing plate.
    Type: Application
    Filed: September 10, 2003
    Publication date: March 25, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Hidehito Sasaki, Hisashi Hotta
  • Publication number: 20040053168
    Abstract: A method of making a printing plate from a heat-sensitive PS plate of a positive-working mode for lithographic printing includes the steps of exposing the heat-sensitive PS plate to light and developing the PS plate using an alkaline developing solution containing at least one surfactant selected from the group consisting of anionic surfactants and ampholytic surfactants, and a salt selected from the group consisting of alkali metal salts and ammonium cation salts. The PS plate has a substrate and an image forming layer formed thereon, the image forming layer including a lower layer which is formed on the substrate and contains a water-insoluble and alkali-soluble resin and an upper heat-sensitive layer which is overlaid on the lower layer and contains a water-insoluble and alkali-soluble resin and an infrared absorption dye and exhibits an elevated solubility with respect to alkaline aqueous solutions when heated.
    Type: Application
    Filed: September 10, 2003
    Publication date: March 18, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventor: Hironori Ohnishi
  • Publication number: 20040053165
    Abstract: A negative-working CTP plate which is superior in resolution and printing resistance of the image area of a press plate is provided, which is obtained by forming a latent image on a heat-sensitive layer in a heat-sensitive lithographic printing plate comprising a substrate having a hydrophilic surface and a heat-sensitive layer made of an alkali-soluble polymer formed on the surface of the substrate, using heat generated upon irradiation with laser light, and developing the heat-sensitive layer using an alkaline developing solution. In the heat-sensitive lithographic printing plate comprising a substrate having a hydrophilic surface, and a heat-sensitive layer made of an alkali-soluble polymer formed on the surface of the substrate, an advancing contact angle (&thgr;f1) of the surface of the heat-sensitive layer with water at 25° C. is within a range from 70° to 110°, a receding contact angle (&thgr;b2) of the surface of the heat-sensitive layer with water at 25° C.
    Type: Application
    Filed: September 12, 2003
    Publication date: March 18, 2004
    Applicant: Dainippon Ink and Chemicals, Inc.
    Inventors: Yasuyuki Watanabe, Naohito Saito, Hisatomo Yonehara, Yasuyuki Suzuki
  • Publication number: 20040029055
    Abstract: A concentrated composition of a color developer replenisher for a silver halide color photographic material, the composition comprising a single solution, wherein the solution comprises 0.14 mol/liter or more of a p-phenylenediamine color developing agent, the solution has a specific gravity of 1.2 or more, the solution has pH of 13.3 or more, the solution comprises from 0.2 to 1 mol/liter of at least one compound selected from benzenesulfonic acids which may be substituted with an alkyl group, and lactams, and the solution comprises substantially no alkanolamine.
    Type: Application
    Filed: July 21, 2003
    Publication date: February 12, 2004
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventors: Yoshihiro Fujita, Kazuaki Yoshida
  • Publication number: 20040023168
    Abstract: A single-part colour developing concentrate with a pH greater than or equal to 7 which contains at least 0.02 mol of a colour developer substance and at least 0.015 mol of an antioxidant per litre, characterised in that the concentrate contains 0.05 to 35 g per litre of a wetting agent soluble in water in this amount, is distinguished by very good stability in storage at low temperatures and the discharge behaviour from the concentrate bottle is considerably improved and soiling of the processing equipment is avoided. Furthermore, the optical brightener precipitation occurring in practice in the bleach fixing bath is also prevented.
    Type: Application
    Filed: July 18, 2003
    Publication date: February 5, 2004
    Applicant: Agfa-Gevaert
    Inventors: Ralf Wichmann, Frank Dovecar
  • Publication number: 20040018453
    Abstract: A composition and method to reduce photolithographic residue and scum formation on a substrate or in a solution, and to reduce or prevent foam formation. The composition contains a diphenyl oxide compound in combination with an antifoam agent. The composition may be added to developer solutions and stripper solutions used in manufacturing printed wiring boards.
    Type: Application
    Filed: April 7, 2003
    Publication date: January 29, 2004
    Applicant: Shipley Company, L.L.C.
    Inventors: Edgardo Anzures, Daniel E. Lundy, Robert K. Barr, Corey O'Connor
  • Patent number: 6664035
    Abstract: A method for providing a color image in an exposed color negative silver bromoiodide film element comprising contacting said element with an aqueous color developing composition having a pH of 9.0 to 12.0 and comprising a color developing agent, sulfite ion and an additional antioxidant wherein the color developing agent/sulfite ion molar ratio is less than 10:1 and greater than 0.55:1, and the sulfite ion/antioxidant molar ratio is less than 4.35:1 and greater than 0.25:1.
    Type: Grant
    Filed: November 3, 2000
    Date of Patent: December 16, 2003
    Assignee: Eastman Kodak Company
    Inventors: Shirleyanne Haye, Robert A. Arcus, Janet M. Huston
  • Publication number: 20030215750
    Abstract: A method for preparation of a lithographic printing plate, which comprises the steps of: imagewise recording on a lithographic printing plate precursor comprising a support having a hydrophilic surface and a thermosensitive layer, the thermosensitive layer comprising at least one of polymer particles and a microcapsule encapsulating an oleophilic compound therein; and rubbing the printing plate precursor by a rubbing member in the presence of a processing liquid to remove the thermosensitive layer of non-image portions.
    Type: Application
    Filed: April 23, 2003
    Publication date: November 20, 2003
    Applicant: FUJI PHOTO FILM CO., LTD.
    Inventor: Toshifumi Inno
  • Patent number: 6649324
    Abstract: An aqueous developer for lithographic printing plates and a method for developing the printing plates are disclosed. The developer comprises an organic dispersing agent. The developer develops multi-layer printing plates quickly, with high throughput, but with no sludge formation in the developing process.
    Type: Grant
    Filed: October 17, 2000
    Date of Patent: November 18, 2003
    Assignee: Kodak Polychrome Graphics LLC
    Inventors: Ulrich Fiebag, Celin Savariar-Hauck
  • Patent number: 6645711
    Abstract: A silver halide color photographic light-sensitive material containing a compound of the formula: wherein R1, R2 and R3 each represent a hydrogen atom or a substituent; R4 represents an alkyl, aryl or heterocyclic group; R1 and R2, or/and R2 and R4 may combine with each other to form a 5-membered, 6-membered or 7-membered ring; Z represents a group of non-metallic atoms that form a 5-membered, 6-membered or 7-membered ring together with the nitrogen atom and two carbon atoms in the benzene ring; R5 represents an alkyl, aryl or heterocyclic group, in which the compound of the formula contains none of a hydroxyl group, a carboxyl group and a sulfo group in each of R1, R2, R3 and R4.
    Type: Grant
    Filed: July 18, 2002
    Date of Patent: November 11, 2003
    Assignee: Fuji Photo Film Co., Ltd.
    Inventors: Osamu Uchida, Toshio Kawagishi, Masaaki Tsukase, Kazuhiko Matsumoto
  • Publication number: 20030203325
    Abstract: A concentrated color developer composition packed in a container which is comprised of material exhibiting an oxygen permeability of not more than 50 ml/(m2·day·atm), and the concentrated color developer composition comprising a hydroxyalkyl-substituted p-phenediamine type color developing agent of not less than 0.05 mol/l, a sulfite and a hydroxylamine salt. The processing method by use of the concentrated composition is also disclosed.
    Type: Application
    Filed: February 21, 2003
    Publication date: October 30, 2003
    Inventors: Wataru Satake, Atsuro Yanata