Urethane Patents (Class 430/284.1)
-
Publication number: 20040191672Abstract: The resist composition of the invention comprises at least one resist compound and at least one acid or base generator capable of directly or indirectly generating an acid or a base by exposure to radiation. The resist compound satisfies all the following requirements: a) containing at least one acid-dissociating functional group in molecule thereof, b) containing at least one kind of functional group selected from the group consisting of urea group, urethane group, amido group and imido group in a molecule thereof, c) having a molecular weight of 500 to 5,000, d) having a branched structure, and e) satisfying the formula: 3≦F≦5, wherein F is represented by (number of total atoms)/(number of total carbon atoms—number of total oxygen atoms). The resist composition has a high sensitivity, a high resolution, a high heat resistance and a good solubility to solvents.Type: ApplicationFiled: January 16, 2004Publication date: September 30, 2004Inventors: Dai Oguro, Takeo Hayashi, Masatoshi Echigo
-
Publication number: 20040175653Abstract: A composition that comprises a photopolymerizable compound containing at least two pendant unsaturated groups; at least one ethylenically unsaturated photopolymerizable polyalkylene oxide hydrophilic monomer; at least one nonionic surfactant; and at least one photoinitiator is provided. The composition also preferably contains at least one amine modified acrylic oligomer and a dye. Other conventional photoresist components such as photosensitizers, adhesion promoters, leveling agents and solvents may also be included in the composition. Such compositions are useful for forming a pattern on a substrate, such as patterning microlithographic circuits on a substrate.Type: ApplicationFiled: February 27, 2003Publication date: September 9, 2004Inventors: Hong Zuang, Joseph E. Oberlander, Ping-Hung Lu, Stanely F. Wanat, Robert R. Plass
-
Publication number: 20040175659Abstract: A photosensitive composition for sandblasting comprising the components of: (A) a photopolymerizable urethane (meth)acrylate oligomer comprising (meth)acryloyl group; (B) an acrylic copolymer; and (C) a photopolymerization initiator, wherein the component (B) comprises, as a monomer unit, one of copolymerizable monomers comprising one of a benzene ring and a cyclohexyl group.Type: ApplicationFiled: March 16, 2004Publication date: September 9, 2004Applicant: Tokyo Ohka Kogyo Co., Ltd., a Japan corporationInventors: Akira Kumazawa, Ryuma Mizusawa, Syunji Nakazato, Hiroyuki Obiya
-
Publication number: 20040170922Abstract: The present invention provides a photosensitive composition including an infrared absorbing agent, a sulfonium salt polymerization initiator, a polymerizable compound having a urethane skeleton and a binder polymer, as well as a planographic printing plate precursor containing the photosensitive composition in a photosensitive layer on a substrate.Type: ApplicationFiled: February 20, 2004Publication date: September 2, 2004Applicant: FUJI PHOTO FILM CO., LTD.Inventor: Takahiro Goto
-
Patent number: 6780566Abstract: In accordance with the present invention, there are provided high performance, photoimageable resin compositions for flexographic printing, having excellent physical properties, e.g., resilience, hardness, toughness, and the like, as well as increased rates of cure upon exposure to radiation. In a further aspect of the invention, there are provided printing plates prepared employing invention compositions, wherein said printing plates are characterized as having excellent exposure sensitivity, the capability of rapidly curing upon exposure, excellent retention of fine details, and excellent colorless performance. Moreover, printing plates prepared employing invention compositions have good flexibility, excellent washout properties, and retain such properties over extended periods of storage. In another aspect of the invention, there are provided methods for the preparation of formulations comprising said compositions and methods for use thereof.Type: GrantFiled: March 11, 2003Date of Patent: August 24, 2004Assignee: Napp Systems, Inc.Inventors: Yuxin Hu, David H. Roberts, Reny R. Paguio, Maria Teresa A. Castillo
-
Publication number: 20040146806Abstract: An improved photopolymerizable resin composition for use in making flexographic printing plates, wherein the resin composition comprises a base polymer, a reactive crosslinking agent, a photoinitiator, and a nanoparticle-sized filler. Printing plates produced using the improved compositions of the invention have increased toughness, less tack, reduced cold flow, and higher hardness as compared to prior art compositions that do not contain nanoparticle fillers.Type: ApplicationFiled: January 29, 2003Publication date: July 29, 2004Inventors: David H. Roberts, Geoffrey Yuxin Hu, Maria Teresa A. Castillo
-
Patent number: 6767678Abstract: A photosolder resist composition of the invention is characterized by containing (A) a resin containing radical polymerization groups and carboxyl groups obtained by adding a cyclic ether group of a cyclic ether group-containing vinyl monomer to a carboxylic group of a radical copolymer containing at least isobornyl (meth) acrylate and a carboxyl group-containing vinyl monomer as monomer units; (B) an inorganic filler; and (C) a photocurable mixture of a polyfunctional acrylic monomer (c1), a cyclic ether group-containing compound (c2), and a photopolymerization initiator (c3).Type: GrantFiled: November 16, 2001Date of Patent: July 27, 2004Assignee: Nippon Paint Co., Ltd.Inventors: Naoya Yabuuchi, Minoru Fujita, Osamu Namba, Keiichi Okajima
-
Publication number: 20040137369Abstract: A polymerizable composition containing: (A) a binder polymer; (B) a compound having a polymerizable unsaturated group; and (C) a compound which has a triarylsulfonium salt structure and in which a sum of Hammett's a constants of all substituents bonded to the aryl skeleton is larger than 0.46.Type: ApplicationFiled: December 18, 2003Publication date: July 15, 2004Applicant: FUJI PHOTO FILM CO., LTD.Inventor: Kazuto Shimada
-
Publication number: 20040131975Abstract: A photosensitive lithographic printing plate comprises a photosensitive layer and a protective layer formed in this order on a support, wherein the photosensitive layer has a maximum peak of spectral sensitivity within a wavelength range ranging from 390 to 430 nm, the minimum exposure for the photosensitive lithographic printing plate for image formation at a wavelength of 410 nm (S410) is at most 100 &mgr;J/cm2, and the relation between the minimum exposure for image formation at a wavelength of 450 nm (S450) and the minimum exposure for image formation at a wavelength of 410 nm (S410) is 0<S410/S450≦0.1.Type: ApplicationFiled: December 18, 2003Publication date: July 8, 2004Applicant: LASTRA S.p.A.Inventors: Toshiyuki Urano, Kazuhiro Kohori, Hideaki Okamoto
-
Publication number: 20040131972Abstract: The present invention provides a resin composition that includes (A) a polymer compound that has, on a side chain of a main chain polymer, through a linkage group containing a hydrogen-bonding group and a ring structure, a terminal ethylenic unsaturated bond, and is soluble or swelling in water or an alkali aqueous solution, and (B) a compound that generates radicals when exposed to light or heat. The invention further provides a thermo/photosensitive composition that includes (A′) a polymer compound that has a non-acidic hydrogen-bonding group on a side chain and is soluble or swelling in water or an alkali aqueous solution, and (B′) a compound that generates radicals when exposed to light or heat.Type: ApplicationFiled: January 12, 2004Publication date: July 8, 2004Applicant: FUJI PHOTO FILM CO., LTD.Inventor: Kazuhiro Fujimaki
-
Publication number: 20040096757Abstract: An object of the present invention is to provide a photosensitive resin composition or a photosensitive resist for color filters which is superior in heat resistance, water resistance, solvent resistance, chemical resistance, and also transparency, and a method for producing color filters using them. The present invention relates to a photosensitive resin composition comprising a vinyl polymer (A) having at least one cyclocarbonate group and at least one carboxyl group in the molecule and a compound (B) having at least two ethylenically unsaturated double bonds in the molecule as a main component, which can introduce crosslinked structures by photocuring and thermosetting, a photosensitive resist for color filters comprising the photosensitive resin composition and a colorant, and a method for producing a color filter, using the photosensitive resist for color filters.Type: ApplicationFiled: September 25, 2003Publication date: May 20, 2004Inventors: Hiroyuki Tokuda, Yasunobu Hirota, Hidenobu Ishikawa
-
Patent number: 6737219Abstract: The invention provides a photopolymer package for use in making a hand stamp plate, the package consisting of a sachet containing a photocurable liquid polymer, the walls of the sachet being formed of material capable of being released from the cured photopolymer. Methods for the formation of the package and the hand stamp plate are also provided. The invention eliminates the requirement for the use of a backing layer in the package and thereby offers significant advantages over the prior art in terms of cost and efficiency.Type: GrantFiled: November 1, 2001Date of Patent: May 18, 2004Inventors: Paul Mayo Holt, Maria Peneva Dincheva
-
Patent number: 6730457Abstract: 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: GrantFiled: July 5, 2002Date of Patent: May 4, 2004Assignee: Kodak Polychrome Graphics LLCInventors: Shashikant Saraiya, Xing Fu Zhong, Jianbing Huang, S. Peter Pappas
-
Publication number: 20040081914Abstract: A pattern can be precisely formed by irradiating, with an active energy beam, a positive sensitive resin composition according to this invention comprising a base polymer, an ether-bond-containing olefinic unsaturated compound and an acid-generating agent, where the base polymer is a copolymer comprising the structural units represented by formulas (1) to (3): 1Type: ApplicationFiled: July 28, 2003Publication date: April 29, 2004Applicant: Mitsui Chemicals, Inc.Inventors: Genji Imai, Ritsuko Fukuda, Toshiro Takao, Keiichi Ikeda, Yoshihiro Yamamoto
-
Patent number: 6727044Abstract: A method for producing a lithographic printing plate is disclosed, comprising performing the plate-making by scan exposing a lithographic printing original plate comprising a hydrophilic support having thereon a photosensitive layer containing i) at least one polyurethane resin binder, ii) at least one compound having an addition polymerizable ethylenically unsaturated bond, and iii) at least one photopolymerization initiation system. Also disclosed are a photosensitive composition for use in the photosensitive layer of the lithographic printing original plate.Type: GrantFiled: April 9, 1999Date of Patent: April 27, 2004Assignee: Fuji Photo Film Co., Ltd.Inventors: Kazuhiro Fujimaki, Yasuo Okamoto, Tatsuji Higashi, Tadahiro Sorori
-
Patent number: 6716566Abstract: There is provided a negative planographic printing plate which can be directly recorded based on digital data from computers and the like, excellent in storage stability, shows no reduction in sensitivity with the lapse of time, and has excellent face flatness. It comprises a substrate having disposed thereon a photosensitive layer which is obtained by applying a photosensitive layer application solution containing an infrared absorber, a compound which generates a radical or acid due to heat, a polymerizable compound or a crosslinking compound, and a silicon-based surfactant such as a siloxane/oxyethylene copolymer and the like, onto the substrate and drying the solution, and which is hardened by exposure to an infrared laser ray.Type: GrantFiled: July 2, 2001Date of Patent: April 6, 2004Assignee: Fuji Photo Film Co., Ltd.Inventor: Keitaro Aoshima
-
Publication number: 20040063035Abstract: The invention provides a stereolithographic resin composition including a photo-curable component, a resin having a function of causing a reversible, quick sol-gel phase transition based on temperature change, and a filler, and a stereolithographic method using the resin composition.Type: ApplicationFiled: September 26, 2003Publication date: April 1, 2004Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Kazuhiko Nagano, Yoji Okazaki, Takeshi Fujii, Hiromi Ishikawa
-
Publication number: 20040058276Abstract: A flexible, aqueous processible, photoimagable coverlay compositions, having advantageous adhesion and release properties and resistance to (unwanted) haloing. The coverlay compositions of the present invention comprise an acrylic, low Tg, graft copolymer binder component, having an alkali resistant backbone-segment and a pendant arm segment comprising hydrophilic moieties. Optionally, the coverlay further comprises a thiophene-type adhesion promoter to further improve adhesion properties.Type: ApplicationFiled: October 15, 2002Publication date: March 25, 2004Inventors: Thomas E. Dueber, Michael J. West
-
Publication number: 20040053159Abstract: A mixture curable thermally and with actinic radiation, comprisingType: ApplicationFiled: August 21, 2003Publication date: March 18, 2004Inventors: Guido Wilke, Ulrike Rockrath, Karl-Heinz Joost, Egon Wegner, Hubert Baumgart, Uwe Meisenburg
-
Patent number: 6689537Abstract: A photosensitive lithographic printing plate comprises a photosensitive layer and a protective layer formed in this order on a support, wherein the photosensitive layer has a maximum peak of spectral sensitivity within a wavelength range ranging from 390 to 430 nm, the minimum exposure for the photosensitive lithographic printing plate for image formation at a wavelength of 410 nm (S410) is at most 100 &mgr;J/cm2, and the relation between the minimum exposure for image formation at a wavelength of 450 nm (S450) and the minimum exposure for image formation at a wavelength of 410 nm (S410) is 0<S410/S450<0.1.Type: GrantFiled: April 19, 2001Date of Patent: February 10, 2004Assignee: Lastra S.p.A.Inventors: Toshiyuki Urano, Kazuhiro Kohori, Hideaki Okamoto
-
Publication number: 20040023146Abstract: A lithographic printing plate precursor is disclosed, which comprises an image-forming layer which contains a hydrophilic resin, an acid precursor and at least one component selected from fine particles containing a compound having a vinyloxy group and microcapsules containing a compound having a vinyloxy group, on a hydrophilic support, which can be development processed on a printing machine.Type: ApplicationFiled: July 14, 2003Publication date: February 5, 2004Applicant: Fuji Photo Film Co., Ltd.Inventors: Kazuo Maemoto, Keiji Akiyama, Hiromitsu Yanaka
-
Publication number: 20040023136Abstract: The present invention provides an initiator system including an infrared-absorbing compound that exhibits an electronic transition band in the near-infrared region, an initiator, and a metallocene compound. Upon exposure to infrared radiation, the initiator system is capable of producing radicals sufficient to initiate a photopolymerization reaction. Suitable infrared-absorbing compounds include indocyanine dyes, for example. Trihalomethyl triazine compounds and onium compounds are suitable initiators. Suitable metallocene compounds include ferrocenes and titanocenes. The present invention also provides an infrared-sensitive composition including an ethylenically unsaturated polymerizable component, an infrared-absorbing compound that exhibits an electronic transition band in the near-infrared region, an initiator, and a metallocene compound. The infrared-sensitive composition provides improved photospeed and sensitivity in some embodiments.Type: ApplicationFiled: August 1, 2002Publication date: February 5, 2004Inventors: Heidi M. Munnelly, Jianbing Huang
-
Publication number: 20040013968Abstract: Negative thermosensitive lithographic printing plates developable with a non-alkaline aqueous developer and method of developing such plates. The plate comprises on a substrate a thermosensitive layer comprising an ethylenically unsaturated monomer, a free radical initiator, and an infrared absorbing dye. The plate can be imagewise exposed with an infrared laser to cause hardening in the exposed areas and then developed with a non-alkaline aqueous developer to remove the non-exposed areas. The non-alkaline aqueous developer can be water or an aqueous solution comprising at least 60% of water and having a pH of 2.0 to 10.0.Type: ApplicationFiled: July 22, 2002Publication date: January 22, 2004Inventor: Gary Ganghui Teng
-
Publication number: 20040013976Abstract: The present invention relates to an active energy ray curable composition for coating optical disc, comprising a urethane (meth)acrylate compound having at least one amide group in the molecule, an ethylenically unsaturated compound other than the urethane (meth)acrylate compound and a photopolymerization initiator; and an optical disc having a cured coating layer obtained by curing the composition.Type: ApplicationFiled: May 30, 2003Publication date: January 22, 2004Inventors: Juichi Fujimoto, Kouji Hayama, Seiji Nushi, Hiroshi Fukushima
-
Patent number: 6680152Abstract: A photosensitive resin composition (C) containing a photosensitive resin (B) which is a reaction product produced by modifying an epoxy acrylate (a) with a cyanate ester compound (b) to obtain a modification product (A) and reacting the modification product (A) with a polybasic acid anhydride (c), and a compound (d) of the formula, in which each of n and m is an integer of at least 1, and a cured product of the photosensitive resin composition (C).Type: GrantFiled: May 31, 2002Date of Patent: January 20, 2004Assignee: Mitsubishi Gas Chemical Company, Inc.Inventors: Kenji Ishii, Nobuyuki Ikeguchi, Takabumi Omori, Daisuke Ohno
-
Publication number: 20040009428Abstract: A resist curable resin material composed mainly of a curable prepolymer (for example, a photocurable resin material comprising a photosensitive prepolymer having an ethylenically unsaturated terminal group originating in an acrylic monomer (A), a compound having an ethylenically unsaturated group excluding the photosensitive prepolymer (B), and a photopolymerization initiator (C)) and a flame-retarding agent containing a hydrated metal compound and a brominated epoxy compound are mixed to produce a resist curable resin composition. Alternatively, the resist curable resin material described above and a hydrated metal compound surface-treated with a surface treating agent having an amphipathic property and a polarity are mixed to produce a resist curable resin composition.Type: ApplicationFiled: February 28, 2003Publication date: January 15, 2004Inventors: Kenji Tamura, Motoyuki Hirata, Eikichi Kogure, Kenichi Yamada
-
Publication number: 20040005514Abstract: 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: ApplicationFiled: July 5, 2002Publication date: January 8, 2004Inventors: Shashikant Saraiya, Xing Fu Zhong, Jianbing Huang, S. Peter Pappas
-
Patent number: 6670100Abstract: A positive type actinic ray-curable (dry film having, on the surface of a non-actinic ray-curable substrate, a solid positive type actinic ray-curable urethane resin layer formed from (1) a resin composition containing, as essential components, (A1) an ether linkage-containing olefinicaly unsaturated compound, (B1), an acid group-containing urethane resin having a weight average molecular weight of 1,000 to 200,000 and an acid group content in the range of 0.Type: GrantFiled: May 18, 2000Date of Patent: December 30, 2003Assignee: Kansai Paint Co., Ltd.Inventors: Takeya Hasegawa, Genji Imai
-
Publication number: 20030232280Abstract: The present invention discloses a negative planographic printing plate precursor for infrared exposure having an image recording layer containing an infrared absorbing agent, a radical generator and a radical polymerizable compound on a support characterized in that a sensitivity ratio (S1/S60) of a sensitivity (S60) when developed 60 minutes after infrared laser exposure to a sensitivity (S1) when developed one minute after exposure is at least 0.5 and less than 1.0 in the image recording layer. It is preferable that this composition contains a polymer compound which has a functional group having high radical reactivity and can be dissolved or swollen in water or an aqueous alkali solution.Type: ApplicationFiled: June 5, 2003Publication date: December 18, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventor: Takahiro Goto
-
Patent number: 6660449Abstract: An imaging member, such as a negative-working printing plate or on-press cylinder, comprises latex polymer-carbon black composite particles. Such imaging members can be prepared with a hydrophilic imaging layer comprised of a heat-sensitive hydrophilic polymer having ionic moieties and the latex polymer-carbon black composite particles as a photothermal conversion material. The latex polymer-carbon black composite particles can be formulated in water or water-miscible solvents without agglomeration with other components such as charged polymers.Type: GrantFiled: October 19, 2001Date of Patent: December 9, 2003Assignee: Eastman Kodak CompanyInventors: Shiying Zheng, Xiaoru Wang, Jeffrey W. Leon, Edward Schofield
-
Publication number: 20030224250Abstract: A novel liquid photoreactive asymmetric acrylate compound containing sulfur, aromatic moieties, and optionally bromine, and having high dynamic range sensitivity is disclosed. The acrylate compound is a monomer for a photoimageable system. In one embodiment, when about 2-8% by weight of the acrylate compound is dissolved in a two-component urethane matrix system and incorporated in an optical article formed by reacting the two-component urethane matrix system, the optical article shows a sensitivity of about 4 or more and a shrinkage during the formation of the optical article of about 0.05% versus a sensitivity of 2.26 and a shrinkage of 0.13% when tribromophenyl acrylate, a commercial monomer, was used.Type: ApplicationFiled: May 29, 2003Publication date: December 4, 2003Inventors: Songvit Setthachayanon, Xuan T. Phan, Mark David Michaels, Benjamin C. Ihas
-
Patent number: 6653050Abstract: A negative image-recording material for heat-mode exposure, which is able to form images by heat-mode exposure, comprises (A) a polyurethane resin having at least one or more side-chain branches of the following general formulae (1) to (3) which polyurethane resin is soluble in an alkaline aqueous solution, (B) a photo-thermal converting agent, and (C) a compound capable of generating a radical through heat-mode exposure to light of a wavelength which can be absorbed by the photo-thermal converting agent. In formulae (1) to (3), R1 to R11 each independently represents a monovalent organic group; X and Y each independently represents an oxygen atom, a sulfur atom, or —N(R12)—; Z represents an oxygen atom, a sulfur atom, —N(R13)—, or an optionally-substituted phenylene group; R12 represents a hydrogen atom or a monovalent organic group; and R13 represents a hydrogen atom or a monovalent organic group.Type: GrantFiled: February 25, 2002Date of Patent: November 25, 2003Assignee: Fuji Photo Film Co., Ltd.Inventors: Kazuhiro Fujimaki, Tadahiro Sorori
-
Publication number: 20030215747Abstract: This invention relates to a photo-polymerization type photosensitive electrode paste composition for a plasma display panel that is capable of preventing a bubble from occurring on an electrode surface during an electrode paste printing process and a damage of an electrode pattern caused by adhesive strength reduction, and a method of fabricating the electrode using the same.Type: ApplicationFiled: November 27, 2002Publication date: November 20, 2003Applicant: LG Electronics Inc.Inventors: Sang Tae Kim, Seung Tae Park, Lee Soon Park, Jong Woo Park
-
Publication number: 20030215745Abstract: A process for producing a polymer compound having a double bond in a side chain, wherein a functional group represented by the following formula (1) is subjected to an elimination reaction to form the polymer compound which includes another functional group having the double bond in the side chain thereof represented by the following formula (2): 1Type: ApplicationFiled: March 11, 2003Publication date: November 20, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventor: Kazuhiro Fujimaki
-
Patent number: 6649323Abstract: A lithographic printing plate precursor comprises a substrate, a free radical polymerizable photosensitive layer comprising a light-sensitive composition on the substrate, and a water-soluble overcoat layer on the photosensitive layer, wherein the overcoat layer comprises polyvinyl alcohol, and a further component that is not amphoteric and is poly(1-vinylimidazole) or a copolymer of 1-vinylimidazole and at least one further monomer. The photosensitive layer comprises a free radical polymerizable component and a photoinitiator.Type: GrantFiled: January 21, 2000Date of Patent: November 18, 2003Assignee: Kodak Polychrome Graphics LLCInventors: Socrates Peter Pappas, Harald Baumann, Udo Dwars, Celin M. Savariar-Hauck, Hans-Joachim Timpe
-
Publication number: 20030211420Abstract: 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 logP value is less than 0; and (iv) at least one diol compound whose logP value is higher than 0.Type: ApplicationFiled: March 13, 2003Publication date: November 13, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventor: Yasuhito Oshima
-
Publication number: 20030211421Abstract: A photoactive compound is used in combination with a photosensitizer, represented by the following formula (1):Type: ApplicationFiled: November 27, 2002Publication date: November 13, 2003Inventors: Makoto Hanabata, Masahiro Sato, Junko Katayama, Satsuki Kitajima, Atsushi Niwa
-
Patent number: 6638687Abstract: A method for preparing a lithographic printing plate involving the steps of subjecting, to imagewise exposure, a presensitized plate for use in making a lithographic printing plate comprising an aluminum substrate provided thereon with a light-sensitive layer formed from a photopolymerizable light-sensitive composition, which comprises a compound having an ethylenically unsaturated double bond, a photopolymerization initiator and a polyurethane resin binder and then developing the imagewise exposed plate with a developer containing an inorganic alkaline agent and a nonionic surfactant, carrying a polyoxyalkylene ether group, having a pH value ranging from 10.0 to 12.5 and an electrical conductivity ranging from 3 to 30 mS/cm.Type: GrantFiled: December 6, 2001Date of Patent: October 28, 2003Assignee: Fuji Photo Film Co., Ltd.Inventors: Tatsuji Higashi, Yasuo Okamoto
-
Patent number: 6632580Abstract: A lithographic printing plate precursor is disclosed, which comprises an image-forming layer which contains a hydrophilic resin, an acid precursor and at least one component selected from fine particles containing a compound having a vinyloxy group and microcapsules containing a compound having a vinyloxy group, on a hydrophilic support, which can be development processed on a printing machine.Type: GrantFiled: June 1, 2001Date of Patent: October 14, 2003Assignee: Fuji Photo Film Co., Ltd.Inventor: Kazuo Maemoto
-
Publication number: 20030190554Abstract: A plate-making method of a printing plate comprising exposing a printing plate precursor having a photosensitive layer comprising a photopolymerizable composition containing (i) a crosslinking agent having two ethylenic polymerizable groups and (ii) a crosslinking agent having three or more ethylenic polymerizable groups, and development processing the exposed printing plate precursor with an alkali developer having a pH of not more than 12.5.Type: ApplicationFiled: August 29, 2002Publication date: October 9, 2003Inventor: Kazuto Kunita
-
Patent number: 6630285Abstract: A pattern can be precisely formed by irradiating, with an active energy beam, a positive sensitive resin composition according to this invention comprising a base polymer, an ether-bond-containing olefinic unsaturated compound and an acid-generating agent, where the base polymer is a copolymer comprising the structural units represented by formulas (1) to (3): where R1 and R3 are each independently hydrogen or methyl and R2 is C1-C6 straight or branched unsubstituted alkyl or C1-C6 straight or branched substituted alkyl, wherein a, b and c are 0.05 to 0.7, 0.15 to 0.8 and 0.01 to 0.5, respectively and a+b+c=1.Type: GrantFiled: October 14, 1999Date of Patent: October 7, 2003Assignee: Mitsui Chemicals, Inc.Inventors: Genji Imai, Ritsuko Fukuda, Toshiro Takao, Keiichi Ikeda, Yoshihiro Yamamoto
-
Publication number: 20030180654Abstract: The present invention relates to a light-sensitive composition containing: (i) at least one diazonium polycondensation product or at least one system that can be radically polymerized and consists of photoinitiators and unsaturated compounds which can be radically polymerized or at least one hybrid system consisting of a diazonium polycondensation product and a system that can be radically polymerized and consists of photo initiators and unsaturated compounds which can be radically polymerized, (ii) at least one binding agent and optionally one or more exposure indicators, one or more dyes for increasing the image contrast and one or more acids for stabilizing the light-sensitive composition which is characterized in that the binding agent essentially consists of units (A, B, C, D), whereby A corresponds to formula (I), B corresponds to formula (II), C corresponds to formula (III) and D corresponds to formula (IV). The invention also relates to the use thereof for coating printing plates.Type: ApplicationFiled: December 10, 2002Publication date: September 25, 2003Inventors: Robert Fuss, Harald Baumann, Udo Dwars, Hans-Joachim Timpe
-
Publication number: 20030180665Abstract: This invention discloses compositions that can be polymerized/crosslinked imagewise upon exposure to ionization radiation such as x-ray, electron beam, ion beam, and gamma-ray. This invention also discloses methods of use for these compositions for microfabrication of ceramics, for stereolithography, and for x-ray, e-beam, and ion-beam lithography which can be used for photoresists.Type: ApplicationFiled: March 21, 2003Publication date: September 25, 2003Inventor: Ying Wang
-
Process for making a flexographic printing plate and a photosensitive element for use in the process
Publication number: 20030180655Abstract: The invention relates to a process for preparing a flexographic printing plate from a photosensitive element having a photopolymerizable layer and a thermally removable layer on the photopolymerizable layer. The process includes imagewise exposing the photosensitive element and thermally treating the exposed element to form a relief suitable for use in flexographic printing. The thermally removable layer can be transparent or opaque to actinic radiation. The invention also relates to a photosensitive element for use in this process. The photosensitive element includes a photopolymerizable layer and at least one thermally removable layer having a filler and a binder, wherein the binder is less than 49% by weight, based on the total weight of the binder and filler.Type: ApplicationFiled: February 27, 2002Publication date: September 25, 2003Inventors: Roxy Ni Fan, Mark A. Hackler, Anandkumar R. Kannurpatti, Adrian Lungu, Bradley K. Taylor -
Publication number: 20030175622Abstract: In accordance with the present invention, there are provided high performance, photoimageable resin compositions for flexographic printing, having excellent physical properties, e.g., resilience, hardness, toughness, and the like, as well as increased rates of cure upon exposure to radiation. In a further aspect of the invention, there are provided printing plates prepared employing invention compositions, wherein said printing plates are characterized as having excellent exposure sensitivity, the capability of rapidly curing upon exposure, excellent retention of fine details, and excellent colorless performance. Moreover, printing plates prepared employing invention compositions have good flexibility, excellent washout properties, and retain such properties over extended periods of storage. In another aspect of the invention, there are provided methods for the preparation of formulations comprising said compositions and methods for use thereof.Type: ApplicationFiled: March 11, 2003Publication date: September 18, 2003Applicant: Napp Systems, Inc.Inventors: Yuxin Hu, David H. Roberts, Reny R. Paguio, Maria Teresa A. Castillo
-
Publication number: 20030162123Abstract: A functionalized polymer containing a main chain derived from polyerizable monomers and pendent functional groups derived from isocyanates terminated with &agr; or &bgr; ethylenically or acetyenically unsaturated groups. The functionalized polymer forms a good film and may be employed in industries where film forming polymers are used. Such industries include lithography, adhesives, electrophotoimaging, and the like. The functionalized polymers are self cross-linking and are suitable for use as polymer binders in both primary and secondary photoimaging compositions.Type: ApplicationFiled: February 15, 2003Publication date: August 28, 2003Applicant: Shipley Company, L.L.C.Inventors: Robert K. Barr, Charles R. Keil, Steven M. Luboviski
-
Publication number: 20030162130Abstract: 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: 1Type: ApplicationFiled: July 5, 2002Publication date: August 28, 2003Inventor: Yasubumi Murota
-
Publication number: 20030124460Abstract: Negative working thermally imageable elements useful as lithographic printing plate precursors and methods for their use are disclosed. The elements have a substrate, a layer of imageable composition over the substrate, and, optionally, an overcoat layer over the layer of imageable composition. The imageable composition has an allyl-functional polymeric binder. Optimum resolution and on-press performance can be attained without a post-exposure bake. The elements do not require a post-exposure bake and can be used in on-press development applications.Type: ApplicationFiled: August 12, 2002Publication date: July 3, 2003Inventors: Heidi M. Munnelly, Paul R. West, Shashikant Saraiya, Jian Bing Huang
-
Patent number: 6586494Abstract: A radiation-curable inkjet composition for forming 3-D models or images comprising a semi-crystalline or crystalline, low-shrinkage, radiation-curable oligomeric material, a photoinitiator, and a diluent, said inkjet composition having a viscosity of between about 10 to about 50 cps at at least one temperature between 50 to 140° C.Type: GrantFiled: August 8, 2001Date of Patent: July 1, 2003Assignee: Spectra Group Limited, Inc.Inventors: Alexandre Mejiritski, Oleg V. Grinevich, Dustin B. Martin, Douglas C. Neckers
-
Publication number: 20030118942Abstract: A lithographic printing plate for infrared laser is provided which shows an excellent coated surface state and an excellent stability with time against scratch, and which has a heat-sensitive layer containing the following (A) to (D):Type: ApplicationFiled: August 14, 2002Publication date: June 26, 2003Applicant: FUJI PHOTO FILM CO., LTD.Inventors: Tomoyoshi Mitsumoto, Noriaki Watanabe, Kazuo Maemoto