Patent application number | Description | Published |
20080206666 | Material For The Treatment Of Lithographic Substrates And Lithographic Printing Plates - Phosphono-substituted siloxanes suitable as interlayer material in lithographic substrates and for post-treating developed lithographic printing plates, obtainable by reacting (a) a first organosilicon compound of the general formula (I) and (b) a second organosilicon compound of the general formula (II). | 08-28-2008 |
20080248424 | Photopolymer Composition Suitable for Lithographic Printing Plates - Radiation-sensitive element comprising (a) a substrate and (b) a radiation-sensitive coating comprising (i) at least one component selected from photoinitiators and sensitizer/coinitiator systems which absorbs radiation of a wavelength in the range of 250 to 1,200 nm; (ii) at least one oligomer A of formula (I) wherein X | 10-09-2008 |
20090011363 | Photopolymer Composition Usable for Lithographic Plates - Radiation-sensitive element comprising a substrate and a radiation-sensitive coating comprising (a) at least one component selected from photoinitiators and sensitizer/coinitiator systems which absorbs radiation of a wavelength in the range of 250 to 1,200 nm; (b) at least one free-radical polymerizable oligomer A having an average molecular weight in the range of 3,500 to 9,000 determined by GPC, obtainable by reacting a triisocyanate with (i) at least one acrylic or methacrylic monomer with two free OH groups and at least one (meth)acrylic group and (ii) at least one compound comprising one OH group, at least one (meth)acrylic group and at least one poly(alkyleneoxide) chain in the molecule, wherein the (meth)acrylic monomer (i) is present in an amount of 2 to 20 mole-%, based on the total amount of (meth)acrylic compounds with OH functionality. | 01-08-2009 |
20090022961 | INTERLAYER FOR LITHOGRAPHIC PLATES - Lithographic substrate comprising (a) a dimensionally stable plate- or foil-shaped support, (b) an aluminum oxide layer provided on at least one side of the support (a), and (c) an interlayer applied onto the aluminum oxide layer comprising a hydrophilic polymer comprising structural units derived from the following compounds: (a1) at least one compound comprising both polyalkylene oxide chains and at least one structural unit which is free-radical polymerizable, and (a2) at least one monomer capable of copolymerizing with the free-radical polymerizable structural unit of (a1) and furthermore comprising at least one acidic functional group with pKs<5, wherein the acidic functional group can be present as a free acid group or in the form of a salt. | 01-22-2009 |
20090142695 | IMAGEABLE ELEMENTS WITH COMPONENTS HAVING 1H-TETRAZOLE GROUPS - Radiation-sensitive compositions and imageable elements include a polymeric or non-polymeric component in an imageable layer, which component includes 1H-tetrazole groups. The non-polymeric components can be radically polymerizable compounds. The polymeric components can have 1H-tetrazole groups that are pendant to the backbone. The use of such components in negative- or positive-working imageable elements provides high photospeed and improved developability for providing imaged and developed elements, such as lithographic printing plates that show improved chemical resistance and run length. | 06-04-2009 |
20090148794 | METHOD FOR PROCESSING OF PHOTOPOLYMER PRINTING PLATES WITH OVERCOAT - Method is described for producing an imaged lithographic printing plate from a precursor comprising a free-radical polymerizable coating and an oxygen-impermeable overcoat, characterized in that removing the overcoat, developing and gumming is carried out in one single step. | 06-11-2009 |
20090202948 | METHOD FOR DEVELOPING AND SEALING OF LITHOGRAPHIC PRINTING PLATES - A method is described for producing an imaged lithographic printing plate, wherein the developer comprises a hydrophilic polymer comprising (m1) structural units derived from at least one compound comprising both a polyalkylene oxide chain and a free radical polymerizable group, and (m2) structural units derived from at least one compound copolymerizable with the free radical polymerizable group of (i) and comprising at least one functional group with pK | 08-13-2009 |
20090233227 | NEGATIVE-WORKING IMAGEABLE ELEMENTS WITH IMPROVED ABRASION RESISTANCE - Negative-working imageable elements are prepared with radiation-sensitive imageable layers that contain surface-modified silica particles such as fumed silica particles and sol-gel silica particles, that are present in an amount of from about 1 to about 40 weight %, have an average particle size of from about 1 to about 500 nm, have surface hydroxy groups, and have a carbon content of from about 0.5 to about 15 weight % that is derived from surface hydrophobic groups having 1 to 30 carbon atoms. The presence of the surface-modified silica particles provides improved abrasion resistance, reduced tackiness, and various other desired properties. | 09-17-2009 |
20100015556 | NEGATIVE-WORKING IMAGING ELEMENTS AND METHODS OF USE - Negative-working imageable elements such as lithographic printing plate precursors, include a free-radically polymerizable component, an initiator composition that is capable of generating free radicals sufficient to initiate polymerization of the free-radically polymerizable component upon exposure to imaging radiation in the presence of a radiation absorbing compound, a radiation absorbing compound, an aerobic free radical inhibitor, optionally a polymeric binder that is not a free radically polymerizable component, and an anaerobic free radical inhibitor. The molar ratio of the anaerobic free radical inhibitor to the aerobic free radical inhibitor is at least 1:1. This combination of inhibitors provides increased shelf life and good latent image stability particularly when the element includes a polymeric topcoat layer that functions as an oxygen barrier. | 01-21-2010 |
20100190110 | PROCESSING OF LITHOGRAPHIC PRINTING PLATES WITH A DEVELOPER SOLUTION CONTAINING A HYDROPHILIC POLYMER - A method is described for producing an imaged lithographic printing plate, wherein the developer comprises a hydrophilic polymer which comprises (m1) primary, secondary and/or tertiary amino groups, and (m2) acid groups selected from —COOH, —SO | 07-29-2010 |
20100209846 | NEGATIVE-WORKING IMAGEABLE ELEMENTS - Negative-working imageable element can be used to prepared lithographic printing plates. These elements include a water-soluble contrast dye having a λ | 08-19-2010 |
20100233445 | NEGATIVE-WORKING IMAGEABLE ELEMENTS WITH OVERCOAT - Negative-working imageable element can be used to provide lithographic printing plates. The imageable element has a suitable radiation-sensitive imageable layer and a water-soluble overcoat disposed on the imageable layer. This overcoat comprises at least one poly(vinyl alcohol) having a saponification degree of at least 90%, an alkoxylation product of an alkanol, and either a 2-sulfonato succinic acid dialkylester or an alkoxylation product of a 1,4-butanediol. | 09-16-2010 |
20100291355 | UV-SENSITIVE LITHOGRAPHIC PRINTING PLATE PRECURSOR WITH BENZOXAZOLE DERIVATIVE AND ANALOGUES THEREOF AS SENSITIZER - Lithographic printing plate precursor comprising (a) a lithographic substrate with a hydrophilic surface and (b) a radiation-sensitive coating on the hydrophilic surface comprising (i) one or more types of monomers and/or oligomers and/or polymers, each comprising at least one ethylenically unsaturated group accessible to a free-radical polymerization, (ii) at least one sensitizer, and (iii) at least one coinitiator capable of forming free radicals together with the sensitizer, said coinitiator being other than metallocenes, characterized in that the at least one sensitizer comprises a compound of formula (I) wherein at least one of the groups R | 11-18-2010 |
20100304304 | METHOD FOR MAKING LITHOGRAPHIC PLATES - Method for producing an imaged lithographic printing plate comprising the step of developing an imagewise exposed negative working precursor with a developer comprising an alkylene oxide derivative of formula (A), wherein R | 12-02-2010 |
20110003123 | SENSITIZER/INITIATOR COMBINATION FOR NEGATIVE-WORKING THERMAL-SENSITIVE COMPOSITIONS USABLE FOR LITHOGRAPHIC PLATES - The radiation-sensitive composition and the negative working imageable element include a cationic IR absorber with tetraarylborate counteranion and an onium initiator with tetraarylborate counteranion. The use of these components provides high imaging sensitivity, good shelflife and high print run length. | 01-06-2011 |
20110155009 | PROCESSING OF LITHOGRAPHIC PRINTING PLATES WITH HYDROPHILIC POLYMER IN FINISHER SOLUTION - Process for the production of a lithographic printing plate, comprising (a) providing a lithographic printing plate precursor comprising (i) a substrate; (ii) a radiation-sensitive coating comprising one or more layers and (iii) optionally an oxygen-impermeable overcoat; (b) image-wise exposing the lithographic printing plate precursor to radiation of a wavelength to which the radiation-sensitive coating is sensitive; (c) optionally subjecting the image-wise exposed precursor to a preheat treatment and/or rinsing with water; (d) removing the non-image areas from the image-wise exposed precursor by means of an alkaline developer solution; (e) optionally subjecting the imaged precursor obtained in step (d) to rinsing with water; (f) treating the imaged lithographic printing plate obtained in step (d) or (e) with a finisher solution; and (g) optionally subjecting the finisher treated plate obtained in step (f) to at least one further process step selected from rinsing with water, drying and baking; characterized in that the finisher solution comprises 0.01 to 15 wt. %, based on the total weight of the finisher, of a hydrophilic polymer comprising: (m1) primary, secondary and/or tertiary amino groups, and (m2) acid groups selected from —COOH, —SO | 06-30-2011 |
20110188066 | PROCESSOR SYSTEM WITH PROVISION FOR AUTOMATED CONTROL OF PROCESSING PARAMETERS - The invention relates to processing imaged precursors such as lithographic printing plates. The invention relates specifically to adjusting a processing device for optimal processing performance using a plate recognition system that includes a sensing and authentication subsystem. The processor is automated to make adjustments according to the information provided. | 08-04-2011 |
20110189600 | METHOD FOR AUTOMATED CONTROL OF PROCESSING PARAMETERS - The invention relates to processing imaged precursors such as lithographic printing plates. The invention relates specifically to adjusting a processing device for optimal processing performance using a plate recognition system that includes a senseing and authenication subsystem. The processor is automated to make adjustments according to the information provided. | 08-04-2011 |
20110189611 | PLATE RECOGNITION SYSTEM FOR AUTOMATED CONTROL OF PROCESSING PARAMETERS - The invention relates to processing imaged precursors such as lithographic printing plates. The invention relates specifically to adjusting a processing device for optimal processing performance using a pltae recognition system that includes a sensing and authenication subsystem. The processor is automated to make adjustments according to the information provided. | 08-04-2011 |