Patent application number | Description | Published |
20090246693 | NEGATIVE-WORKING LITHOGRAPHIC PRINTING PLATE PRECURSOR AND METHOD OF LITHOGRAPHIC PRINTING USING SAME - A negative-working lithographic printing plate precursor is disclosed that can be developed on the press without going through a development processing step, and a method of lithographic printing is also disclosed that uses this negative-working lithographic printing plate precursor. Also disclosed are a negative-working lithographic printing plate precursor that can be developed by a water-soluble resin-containing aqueous solution and a method of lithographic printing that uses this negative-working lithographic printing plate precursor. A negative-working lithographic printing plate precursor is provided that exhibits an excellent fine line reproducibility in nonimage areas even when printing is performed using ultraviolet-curing ink (UV ink). Also provided is a negative-working lithographic printing plate precursor that exhibits an excellent combination of fine line reproducibility and printing durability and that resists the production of scum during on-press development. The negative-working lithographic printing plate precursor has a hydrophilic support and has thereon a photopolymerizable layer that contains a polymer compound that has the urea bond in the side chain position and a hydrophilic group. The method of lithographic printing uses this negative-working lithographic printing plate precursor. | 10-01-2009 |
20100055613 | NEGATIVE-WORKING LITHOGRAPHIC PRINTING PLATE PRECURSOR AND METHOD OF LITHOGRAPHIC PRINTING USING SAME - A negative-working lithographic printing plate precursor is disclosed that can be developed on the press without going through a development processing step, and a method of lithographic printing is also disclosed that uses this negative-working lithographic printing plate precursor. Also disclosed are a negative-working lithographic printing plate precursor that can be developed by a water-soluble resin-containing aqueous solution and a method of lithographic printing that uses this negative-working lithographic printing plate precursor. A negative-working lithographic printing plate precursor is provided that exhibits an excellent fine line reproducibility in nonimage areas even when printing is performed using ultraviolet-curing ink (UV ink). Also provided is a negative-working lithographic printing plate precursor that exhibits an excellent combination of fine line reproducibility and printing durability and that resists the production of scum during on-press development. The negative-working lithographic printing plate precursor has a support and has thereon a photopolymerizable layer that contains a polymer compound that has the urea bond in the main chain and a hydrophilic group and a carboxylic acid content less than 0.05 meq/g. The method of lithographic printing uses this negative-working lithographic printing plate precursor. | 03-04-2010 |
20100173248 | PLATE SURFACE TREATMENT AGENT FOR LITHOGRAPHIC PRINTING PLATE AND METHOD FOR TREATING LITHOGRAPHIC PRINTING PLATE - A plate surface treatment agent for a lithographic printing plate is provided that includes a vinyl copolymer containing a monomer unit having at least one group selected from the group consisting of a phosphonic acid group, a phosphoric acid group, a carboxylic acid group, and a salt of these groups and a monomer unit having at least one group or structure selected from the group consisting of a sulfonic acid group, a salt thereof, an amide group, and a betaine structure. There is also provided a method for treating a lithographic printing plate that includes a step of imagewise exposing a lithographic printing plate precursor, a step of processing using a developer, and a step of carrying out a plate surface treatment using the plate surface treatment agent for a lithographic printing plate. | 07-08-2010 |
20120251954 | LITHOGRAPHIC PRINTING PLATE PRECURSOR AND METHOD OF PREPARING THE SAME - A lithographic printing plate precursor in a positive-type with an infrared-sensitivity, having a support and an image recording layer provided on the support, the support having a hydrophilic surface, the recording layer having a particular resin, an amphoteric surfactant and/or an anionic surfactant, and an infrared absorbing agent, wherein the particular resin being at least one of resins selected from the group consisting of a polyurethane resin, a poly (vinyl acetal) resin, and maleimide resin A. | 10-04-2012 |
20130255516 | METHOD OF MAKING PLANOGRAPHIC PRINTING PLATE AND PLANOGRAPHIC PRINTING PLATE - A method of making a planographic printing plate, the method includes exposing, to infrared light, a planographic printing plate precursor including a recording layer provided on a substrate; and developing the precursor using an aqueous alkaline solution, in which the recording layer comprises a copolymer containing a structural unit derived from (meth)acrylonitrile and a structural unit derived from styrene, a water-insoluble and alkali-soluble resin, and an infrared absorbing agent, the solubility of the recording layer in the aqueous alkaline solution being increased by the exposure, and in which the aqueous alkaline solution has a pH of 8.5 to 10.8 and contains a betaine-based amphoteric surfactant and an ammonium salt represented by Formula (I): | 10-03-2013 |
20140272710 | LITHOGRAPHIC PRINTING PLATE PRECURSOR AND METHOD OF PREPARING THE SAME - A lithographic printing plate precursor in a positive-type with an infrared-sensitivity, having a support and an image recording layer provided on the support, the support having a hydrophilic surface, the recording layer having a particular resin, an amphoteric surfactant and/or an anionic surfactant, and an infrared absorbing agent, wherein the particular resin being at least one of resins selected from the group consisting of a polyurethane resin, a poly(vinyl acetal) resin, and maleimide resin A. | 09-18-2014 |
Patent application number | Description | Published |
20080227026 | Lithographic printing plate precursor - A lithographic printing plate precursor having a good press life with a practical energy amount, which can be on-press developed without passing through a development processing step after recording an image by a laser of emitting an infrared ray, is provided, which is a lithographic printing plate precursor capable of performing a development and printing by loading on a printing press after imagewise exposure and supplying an oily ink and an aqueous component, the lithographic printing plate precursor comprising a support and an image recording layer, wherein the image recording layer comprises (A) a polymerization initiator, (B) a polymerizable monomer, (C) a binder polymer, and (D) a crosslinked resin particle having a reactive group or (F) a microcapsule containing a polymerizable monomer in the capsule wall, and the image recording layer is imagewise polymerization-curable upon irradiation of actinic ray. | 09-18-2008 |
20080229956 | ON-PRESS DEVELOPABLE LITHOGRAPHIC PRINTING PLATE PRECURSOR - A lithographic printing plate precursor, which is on-press developable by supplying an oily ink and an aqueous component, includes an image forming layer that has, in an exposed area thereof at 25° C., a water content change rate of 2.0 mass % or less when relative humidity is changed from 30% to 50%. | 09-25-2008 |
20080233516 | NEGATIVE LITHOGRAPHIC PRINTING PLATE PRECURSOR AND LITHOGRAPHIC PRINTING METHOD USING THE SAME - A negative lithographic printing plate precursor includes a support; and a photo-polymerization layer containing a polymer compound having at least one of a sulfonamido group and a cyclic structure derived from maleimide, and further having a hydrophilic group in a molecule thereof | 09-25-2008 |
20090022887 | Method for producing and handling of planographic printing plate precursor - A planographic printing plate precursor which prevents deformation and destruction of fine particles dispersed in an image forming layer thereof and has high developing performance and a high speed thin layer coating aptitude is provided. A method for producing and handling a planographic printing plate precursor having an image forming layer containing a photosensitive composition having fine particles dispersed therein is provided. The pressure acting on the image forming layer during or after formation of the image forming layer is 1.5×10 | 01-22-2009 |
20090246688 | NEGATIVE-WORKING LITHOGRAPHIC PRINTING PLATE PRECURSOR AND METHOD OF LITHOGRAPHIC PRINTING USING SAME - A negative-working lithographic printing plate precursor is disclosed that can be developed on the press without going through a development processing step, and a method of lithographic printing is also disclosed that uses this negative-working lithographic printing plate precursor. A negative-working lithographic printing plate precursor is provided that exhibits excellent on-press developability, nonimage area fine line reproducibility and printing durability and that resists the production of scum during on-press development. The negative-working lithographic printing plate precursor has a hydrophilic support and has thereon a photopolymerizable layer that contains at least one selected from the group consisting of a polymer compound that has an ethylenically unsaturated bond in the side chain position, a hydrophilic group and a sulfonamide group and a polymer compound that has an ethylenically unsaturated bond in the side chain position, a hydrophilic group and a cyclic structure derived from a maleimide. The method of lithographic printing uses this negative-working lithographic printing plate precursor. | 10-01-2009 |
20110174179 | LITHOGRAPHIC PRINTING PLATE PRECURSOR, LITHOGRAPHIC PRINTING PLATE PLATEMAKING METHOD, AND POLYMERIZABLE MONOMER - There is provided a lithographic printing plate precursor that enables image recording using a laser and that provides an excellent scumming resistance and an excellent developability while maintaining a satisfactory printing durability. Also provided are a platemaking method, and a novel polymerizable monomer. A lithographic printing plate precursor has a support, and an image recording layer disposed thereon and containing a radical polymerization initiator and a polymerizable monomer that has a sulfonamide group and at least two ethylenically unsaturated groups; a lithographic printing plate platemaking method uses this lithographic printing plate precursor; and a polymerizable monomer has a sulfonamide group and at least two ethylenically unsaturated groups. | 07-21-2011 |
20110217656 | POSITIVE-WORKING LITHOGRAPHIC PRINTING PLATE PRECURSOR FOR INFRARED LASER AND PROCESS FOR MAKING LITHOGRAPHIC PRINTING PLATE - A positive-working lithographic printing plate precursor for infrared laser is provided that includes, layered sequentially above a support, a lower layer and an upper layer, the lower layer and/or the upper layer including an infrared absorbing agent, either the lower layer comprising an alkali-soluble group-containing graft copolymer or the upper layer comprising a sulfonamide group-, active imide group-, and/or amide group-containing graft copolymer, and the graft copolymer being a polyurethane resin having as a graft chain an ethylenically unsaturated monomer-derived constitutional unit. There is also provided a process for making a lithographic printing plate, the process including in sequence an exposure step of imagewise exposing by means of an infrared laser the positive-working lithographic printing plate precursor for infrared laser and a development step of developing using an aqueous alkali solution with a pH of 8.5 to 10.8. | 09-08-2011 |
20120175239 | METHOD FOR PROCESSING WASTE SOLUTION IN PLATE-MAKING PROCESS OF PHOTOSENSITIVE PLANOGRAPHIC PRINTING PLATE - A method for processing waste solution in the plate-making process, in which the waste solution in the plate-making process, which is discharged when the plate-making process of a photosensitive planographic printing plate is carried out using a developer for a photosensitive planographic printing plate, the developer containing at least one sugar selected from non-reducing sugars and at least one base without containing a silicate and by having a pH from 9.0 to 13.5, is evaporated and concentrated by an evaporative concentration apparatus, thereby being separated into water vapor and a dissolved component, wherein, the waste solution in the plate-making process is heated by a heating means in an evaporation container that is provided with base resistance, and the water vapor separated from the waste solution in the plate-making process is taken out from the evaporation container and condensed in a cooling means, thereby being turned into reclaimed water. | 07-12-2012 |
20140065538 | POSITIVE-WORKING LITHOGRAPHIC PRINTING PLATE PRECURSOR FOR INFRARED LASER AND PROCESS FOR MAKING LITHOGRAPHIC PRINTING PLATE - A positive-working lithographic printing plate precursor for infrared laser is provided that includes, layered sequentially above a support, a lower layer and an upper layer, the lower layer and/or the upper layer including an infrared absorbing agent, either the lower layer comprising an alkali-soluble group-containing graft copolymer or the upper layer comprising a sulfonamide group-, active imide group-, and/or amide group-containing graft copolymer, and the graft copolymer being a polyurethane resin having as a graft chain an ethylenically unsaturated monomer-derived constitutional unit. There is also provided a process for making a lithographic printing plate, the process including in sequence an exposure step of imagewise exposing by means of an infrared laser the positive-working lithographic printing plate precursor for infrared laser and a development step of developing using an aqueous alkali solution with a pH of 8.5 to 10.8. | 03-06-2014 |
Patent application number | Description | Published |
20080286685 | PLANOGRAPHIC PRINTING PLATE PRECURSOR AND PRINTING METHOD USING THE SAME - The invention provides a planographic printing plate precursor having at least: a support; and an image recording layer that is provided on the support, the image recording layer comprising: an infrared ray absorbing agent (A); a polymerization initiator (B); a polymerizable compound (C); and a compound (D) represented by the following Formula (I). | 11-20-2008 |
20090047601 | PLANOGRAPHIC PRINTING PLATE PRECURSOR AND PRINTING METHOD USING THE SAME - The invention provides a planographic printing plate precursor comprising: a hydrophilic support; and an image recording layer that is provided on the support, the image recording layer comprising: an infrared ray absorbing agent (A); a polymerization initiator (B); a polymerizable monomer (C); and a specific polymer compound (D) having an alkyleneoxy group in its molecule and having, in a side chain thereof at least one specific group. The invention further provides a printing method using the planographic printing plate precursor, wherein no specific development process is required for performing printing. | 02-19-2009 |
20090246696 | PLANOGRAPHIC PRINTING PLATE PRECURSOR AND PLATE MAKING METHOD USING THE SAME - The invention provides a planographic printing plate precursor having at least: a support; and an image recording layer that is provided on or above the support, the image recording layer containing at least: an infrared ray absorbing agent (A); a polymerization initiator (B); a polymerizable monomer (C); and a polymer compound (D) having, in a side chain thereof, at least one specific polymerizable functional group having a hydroxyl group; and following exposure of the planographic printing plate precursor, an unexposed portion of the image recording layer is removed with a gum solution. The invention further provides a plate making method including imagewise exposing the planographic printing plate precursor and developing the planographic printing plate precursor by processing the exposed planographic printing plate precursor with a gum solution so as to remove an unexposed portion of the image recording layer | 10-01-2009 |
20110200943 | METHOD FOR PRODUCING A PLANOGRAPHIC PRINTING PLATE - Provided is a method of producing a planographic printing plate, including: subjecting a planographic printing plate precursor, which has a support and a positive-working image recording layer, to image-wise exposure; and developing it using an alkaline aqueous solution which contains a specific compound and has a pH of from 8.5 to 10.8, in this order. The recording layer has: a lower layer containing a water-insoluble and alkali-soluble resin and an infrared ray absorbing agent; and an upper layer containing a water-insoluble and alkali-soluble polyurethane resin and a polyorganosiloxane. The specific compound is a nonionic or anionic surfactant, or at least one compound represented by Formula (1) or (2), wherein R | 08-18-2011 |
20130260317 | METHOD OF PRODUCING A PLANOGRAPHIC PRINTING PLATE - A method for producing a planographic printing plate is provided, which includes: subjecting a planographic printing plate precursor to image-wise exposure, wherein the precursor includes plural recording layers at least one of which contains (A) an infrared absorbing agent on a support, the upper recording layer contains (B) a water-insoluble and alkali-soluble polymer compound having a repeating unit containing a fluoroalkyl group or a siloxane structure; and developing the precursor using an alkali developer containing (C) an ammonium salt compound represented by Formulae (C-1) to (C-3), wherein R | 10-03-2013 |
20140182471 | METHOD FOR PRODUCING PLANOGRAPHIC PRINTING PLATE AND PLANOGRAPHIC PRINTING PLATE - A method for producing a planographic printing plate, including the steps of: image-wise exposing a positive type planographic printing plate precursor including an intermediate layer and a positive type image-forming layer successively on a support, the intermediate layer having a coating amount after drying of from 2 mg/m | 07-03-2014 |