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1715results about "Lithography" patented technology
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On-press developable IR sensitive printing plates using binder resins having polyethylene oxide segments
InactiveUS6899994B2Prevent steppingRadiation applicationsSemiconductor/solid-state device manufacturingPolymer sciencePolyethylene oxide
The present invention relates to a polymerizable coating composition suitable for the manufacture of printing plates developable on-press. The coating composition comprises (i) a polymerizable compound and (ii) a polymeric binder comprising polyethylene oxide segments, wherein the polymeric binder is selected from the group consisting of at least one graft copolymer comprising a main chain polymer and polyethylene oxide side chains, a block copolymer having at least one polyethylene oxide block and at least one non-polyethylene oxide block, and a combination thereof. The invention is also directed to an imageable element comprising a substrate and the polymerizable coating composition.
Owner:KODAK POLYCHROME GRAPHICS
Radiation-sensitive compositions and imageable materials
InactiveUS7153632B1Maintaining photo speedMaintaining visible print outPhotosensitive materialsRadiation applicationsPolymer sciencePolymer
A radiation-sensitive composition includes a radically polymerizable component that comprises carboxy groups, an initiator composition to generate radicals, and a polymeric binder comprising poly(alkylene oxide) segments and optionally pendant cyano groups. This composition can be used to prepare imageable elements such as negative-working, on-press developable printing plate precursors.
Owner:EASTMAN KODAK CO
Imageable element with solvent-resistant polymeric binder
InactiveUS20050003285A1Enhances on-press solvent resistanceProlong lifeRadiation applicationsSemiconductor/solid-state device manufacturingSolventPendant group
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 capable of generating radicals sufficient to initiate a polymerization reaction upon exposure to imaging radiation, and a polymeric binder having a hydrophobic backbone and including both constitutional units having a pendant cyano group attached directly to the hydrophobic backbone, and constitutional units having a pendant group including a hydrophilic poly(alkylene oxide) segment. When the imageable element is imaged and developed, the resulting printing plate may exhibit improved on-press solvent resistance and longer press life.
Owner:KODAK POLYCHROME GRAPHICS
Water-developable infrared-sensitive printing plate
ActiveUS20050123853A1Semiconductor/solid-state device manufacturingPhotosensitive material auxillary/base layersPendant groupAqueous solution
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 capable of generating radicals sufficient to initiate a polymerization reaction upon exposure to imaging radiation, and a polymeric binder having a hydrophobic backbone and including constitutional units having a pendant group including a hydrophilic poly(alkylene oxide) segment. The imageable element can be developed using an aqueous developer solution. Alternatively, the imageable element can be developed on-press by contact with ink and / or fountain solution.
Owner:KODAK POLYCHROME GRAPHICS
Negative Working, Heat-Sensitive, Lithographic Printing Plate Precursor
ActiveUS20080213696A1Number of defectSize of defectPhotosensitive materialsDuplicating/marking methodsSimple Organic CompoundsPhosphoric acid
A heat-sensitive negative-working lithographic printing plate precursor includes on a grained and anodized aluminum support a coating including hydrophobic thermoplastic polymer particles, a hydrophilic binder, and an organic compound, wherein the organic compound includes at least one phosphonic acid group or at least one phosphoric acid group or a salt thereof.
Owner:AGFA OFFSET BV
Negative-acting no-process printing plates
InactiveUS6027857APhotosensitive materialsPhotosensitive material processingFunctional monomerOligomer
A photosensitive composition is prepared containing a polymer of the formula B(X)(Y) wherein B represents an organic backbone, each X independently is an acidic group or salt thereof and each Y independently is a photocurable group and a photoinitiating compound or compounds. Preferably, free-radically polymerizable multi-functional monomer and / or oligomer is added to the photosensitive composition. The photosensitive composition can be coated on a suitable substrate for planographic printing plate applications. Imagewise irradiation causes the light struck regions to photocure, becoming insoluble in aqueous and organic mediums, while the non-light struck regions remain highly soluble / dispersable. Printing plates of this construction do not require processing prior to being run on a press.
Owner:3M CO
High speed negative-working thermal printing plates
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.
Owner:KODAK POLYCHROME GRAPHICS
Method of making a photopolymer printing plate
ActiveUS20050266349A1High degree of polymerizationImage deteriorationPhotosensitive materialsDuplicating/marking methodsPhotopolymerEngineering
A method of making a lithographic printing plate comprising the steps of: a) providing a lithographic printing plate precursor comprising (i) a support having a hydrophilic surface or which is provided with a hydrophilic layer, (ii) a photopolymerizable coating on said support, b) image-wise exposing said coating in a plate setter, c) developing the precursor, thereby removing the non-exposed areas of the coating from the support, whereby the developing step is carried out off-press in a gumming unit by treating the coating of the precursor with a gum solution.
Owner:AGFA OFFSET BV
Negative-acting no-process printing plates
InactiveUS6171735B1Platen pressesSemiconductor/solid-state device manufacturingFunctional monomerOligomer
Owner:3M INNOVATIVE PROPERTIES CO
Printing plates using binder resins having polyethylene oxide segments
InactiveUS20050170286A1Prevent steppingRadiation applicationsSemiconductor/solid-state device manufacturingPolymer sciencePolyethylene oxide
The present invention relates to a polymerizable coating composition suitable for the manufacture of printing plates, which may be developable on-press. The coating composition comprises (i) a polymerizable compound and (ii) a polymeric binder comprising polyethylene oxide segments, wherein the polymeric binder is selected from the group consisting of at least one graft copolymer comprising a main chain polymer and polyethylene oxide side chains, a block copolymer having at least one polyethylene oxide block and at least one non-polyethylene oxide block, and a combination thereof. The invention is also directed to an imageable element comprising a substrate and the polymerizable coating composition.
Owner:EASTMAN KODAK CO
Method of making a lithographic printing plate
ActiveUS8232043B2High degree of polymerizationQuality improvementPlaten pressesPhotosensitive materialsInter layerEngineering
A method of making a lithographic printing plate includes the steps of a) providing a lithographic printing plate precursor including (i) a support having a hydrophilic surface or which is provided with a hydrophilic layer, (ii) a coating on the support including a photopolymerizable layer, and, optionally, an intermediate layer between the photopolymerizable layer and the support, b) image-wise exposing the coating in a plate setter, c) optionally, heating the precursor in a preheating unit, and d) developing the precursor off-press in a gumming unit by treating the coating of the precursor with a gum solution, thereby removing the non-exposed areas of the coating from the support, wherein the coating further includes a compound capable of interacting with the support, the compound being present in the photopolymerizable layer and / or in the intermediate layer.
Owner:AGFA OFFSET BV
Imageable element with solvent-resistant polymeric binder
InactiveUS7261998B2Enhances on-press solvent resistanceProlong lifeRadiation applicationsSemiconductor/solid-state device manufacturingPolymer scienceBackbone chain
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 capable of generating radicals sufficient to initiate a polymerization reaction upon exposure to imaging radiation, and a polymeric binder having a hydrophobic backbone and including both constitutional units having a pendant cyano group attached directly to the hydrophobic backbone, and constitutional units having a pendant group including a hydrophilic poly(alkylene oxide) segment. When the imageable element is imaged and developed, the resulting printing plate may exhibit improved on-press solvent resistance and longer press life.
Owner:KODAK POLYCHROME GRAPHICS
Light-sensitive lithographic printing plate
InactiveUS20050214677A1High developing latitudeExcellent printing durabilityPhotosensitive materialsLithographyOrganic acidPlanographic printing
A light-sensitive lithographic printing plate comprising a hydrophilic substrate provided thereon with a layer sensitive to infrared light rays comprising (A) a polymer represented by the following general formula (I); (B) an organic acid and / or a cyclic acid anhydride; and (C) a light-heat conversion substance. The light-sensitive lithographic printing plate is excellent in the both printing durability and the developing latitude.
Owner:FUJIFILM HLDG CORP
Method for making a lithographic printing plate involving on press development
InactiveUS6030750AImprove printing effectSemiconductor/solid-state device manufacturingPlate printingEngineeringPrinting press
The present invention provides a method for making a lithographic printing plate comprising the steps of: (1) image-wise exposing to light an imaging element comprising (i) on a hydrophilic surface of a lithographic base an image forming layer comprising hydrophobic thermoplastic polymer particles capable of coalescing under the influence of heat and dispersed in a hydrophilic binder and (ii) a compound capable of converting light to heat, said compound being comprised in said image forming layer or a layer adjacent thereto; (2) and developing a thus obtained image-wise exposed imaging element by mounting it on a print cylinder of a printing press and supplying an aqueous dampening liquid and / or ink to said image forming layer while rotating said print cylinder.
Owner:EASTMAN KODAK CO
Method of preparing negative-working radiation-sensitive elements
ActiveUS7175969B1Excellent developabilityReduced background stainingPhotosensitive materialsRadiation applicationsSide chainMoisture
A method of preparing negative-working, single-layer imageable elements improves their storage stability in a humid environment. The method includes enclosing the coated imageable elements in a water-impermeable sheet material that substantially inhibits the transfer of moisture to and from the imageable element. Such imageable elements include a radiation-sensitive composition that includes a radically polymerizable component, an initiator composition to provide radicals upon exposure to imaging radiation, a radiation absorbing compound, and a polymeric binder having poly(alkylene glycol) side chains.
Owner:EASTMAN KODAK CO
Lithographic printing plate precursor and lithographic printing method
InactiveUS20050170282A1Photomechanical apparatusPhotosensitive material auxillary/base layersLaser exposureEngineering
An on-press development or non-processing (non-development) type lithographic printing plate precursor capable of giving a printout image having a large lightness difference, and a lithographic printing method using this lithographic printing plate precursor are provided, a lithographic printing plate precursor comprising a support and a photosensitive-thermosensitive layer capable of recording an image by infrared laser exposure, the lithographic printing plate precursor being capable of performing a printing by loading on a printing press without passing through a development processing step after recording an image, or by recording an image after loading on a printing press, wherein said photosensitive-thermosensitive layer comprises (1) an infrared absorbent and (2) a discoloring agent or discoloration system capable of generating a color change upon exposure; and the lithographic printing method performing a printing using the above-described lithographic printing plate precursor.
Owner:FUJIFILM CORP
Negative-working radiation-sensitive compositions and imageable materials
ActiveUS7524614B2Improve solubilityIncrease speedPhotosensitive materialsRadiation applicationsRadiation sensitivityPlanographic printing
A radiation-sensitive composition includes a radically polymerizable component and an iodonium borate initiator composition capable of generating radicals sufficient to initiate polymerization of the free radically polymerizable component upon exposure to imaging radiation. The iodonium borate composition includes a particular diaryliodonium borate compound having organic substituents to provide a sum of at least 6 carbon atoms on the iodonium cation phenyl rings. This composition can be applied to a suitable substrate to provide a negative-working imageable element with improved digital speed and good shelf life and that can be imaged to provide lithographic printing plates. The imaged elements can be developed either on-press or off-press using alkaline developers.
Owner:EASTMAN KODAK CO
Method for developing multilayer imageable elements
InactiveUS20050162505A1Recording apparatusSemiconductor/solid-state device manufacturingEngineeringStochastic screening
A method for forming an image by imaging and developing a multi-layer imageable element, in which the developer is fresh developer and the developer is not reused, is disclosed. Much smaller variation in dot percentage is obtained when each imaged imageable element is developed in fresh developer than when the developer is reused to develop additional imaged imageable elements. The method is especially suited to the formation of images using stochastic screening. Either a solvent based developer or a high pH developer may be used.
Owner:KODAK POLYCHROME GRAPHICS
Thermosensitive lithographic printing plate
InactiveUS7108956B2Favorable image formationHigh sensitivityPhotosensitive materialsSemiconductor/solid-state device manufacturingPolymer scienceWater insoluble
A thermosensitive lithographic printing plate comprising: a hydrophilic support; a lower layer comprising a water-insoluble and alkali-soluble resin; and an upper thermosensitive layer comprising a water-insoluble and alkali-soluble resin and an infrared absorbing dye, whose dissolution in an alkaline aqueous solution increases upon exposure, wherein a surface of the upper thermosensitive layer has protrusions caused by ununiformity of thickness of the upper thermosensitive layer in a proportion of 0.1 or more and not more than 7 per μm2 or the upper thermosensitive layer comprises at least two alkali-soluble resins having a different dissolution speed in an alkaline aqueous solution from each other, and the at least two alkali-soluble resin cause phase separation from each other.
Owner:FUJIFILM HLDG CORP +1
Infrared absorbing compounds and their use in imageable elements
Infrared absorbing compounds are disclosed. The compounds are co-polymers that comprise covalently attached ammonium, sulfonium, phosphonium, and / or iodonium cations, and infrared absorbing cyanine anions that have two to four sulfonate groups and / or sulfate groups, and / or infrared absorbing oxonol anions. The infrared absorbing compounds can be used in aqueous developable lithographic printing plate precursors.
Owner:KODAK POLYCHROME GRAPHICS
Planographic printing plate
InactiveUS6017677AHigh sensitivitySemiconductor/solid-state device manufacturingPhotosensitive material processingSide chainPhotoacid generator
The present invention provide a planographic printing plate comprising a substrate having thereon a recording layer which comprises at least one of a polymer compound carrying on a side chain a functional group which generates sulfonic acid under influence of an acid, base or heating; and a photo acid-generating agent or acid-generating agent; thermal base-generating agent; or an infrared ray absorbing agent, and by this structure, a high sensitive positive type planographic printing plate which can be developed with water or requires no developing is provided.
Owner:FUJIFILM CORP
Coating method and planographic printing plate
InactiveUS20050005794A1Low costImprove uniformityPretreated surfacesPhotomechanical coating apparatusPlanographic printingMaterials science
The present invention provides a method of coating a coating solution comprising: providing a web; providing a coating solution; coating the coating solution on at least one surface of the web; and drying the coating solution to form a coated layer, wherein a temperature of the web is maintained at 35° C. or more during coating. According to the coating method, a multi-layered planographic printing plate can be manufactured at low energy cost and running cost.
Owner:FUJIFILM HLDG CORP +1
Planographic printing plate precursor and planographic printing method
ActiveUS7005234B2Excellent plate-wear resistanceAvoid small quantitiesPhotosensitive materialsRadiation applicationsPlanographic printingPhotochemistry
The present invention provides a planographic printing plate precursor comprising a photosensitive layer on a support, the photosensitive layer including an infrared absorbent, a radical polymerization initiator and a radical polymerizing compound, the photosensitive layer being recordable with irradiation with an infrared ray, and being at least one of soluble and dispersible in water.
Owner:FUJIFILM CORP
Negative-working radiation-sensitive compositions and imageable materials
InactiveUS7332253B1Good solvent resistanceEasy to attachPhotosensitive materialsRadiation applicationsRadiation sensitivitySolvent
A radiation-sensitive composition and negative-working imageable element includes a polymeric binder comprising pendant allyl ester groups to provide solvent resistance, excellent digital speed (sensitivity) and can be imaged and developed without a preheat step to provide lithographic printing plates. The polymeric binder can be prepared with a precursor polymer having pendant carboxy groups that are converted to allyl ester groups using an allyl-containing halide in the presence of a base in order to avoid gelation.
Owner:EASTMAN KODAK CO
All printed solar cell array
The present invention relates to a method for producing a photovoltaic novelty item. Conductive polymer solutions and semiconductive oxide dispersions are formulated into inks that are laid down on top of one another to produce voltage and current when exposed to light. In addition, these inks may be printed on novelty items, such as magazine advertisements or greeting cards, connecting to printed light emitting graphics.
Owner:ZEIRA EITAN C
Planographic printing plate
InactiveUS20010041305A1High purityReduce surface roughnessPhotosensitive materialsRadiation applicationsAnodizingSolubility
A planographic printing plate precursor comprising: an aluminum substrate which has been subjected to a roughening treatment and an anodizing treatment; and a photosensitive layer which provided on a surface of said substrate, and which contains an infrared absorbing agent and a water-insoluble and alkali aqueous solution-soluble polymer compound, and whose solubility in an alkali developing solution varies by infrared laser exposure, wherein said substrate is obtained by electrochemically roughening an aluminum alloy plate which contains a trace amount of certain elements to an aluminum alloy of high purity.
Owner:FUJIFILM CORP
Heat-sensitive lithographic printing plate precursor
InactiveUS20050037280A1Radiation applicationsSemiconductor/solid-state device manufacturingHeat sensitivePhenyl group
A heat-sensitive lithographic printing plate precursor is disclosed which comprises a hydrophilic support and an oleophilic coating comprising an infrared absorbing agent and a developer soluble polymer which comprises a phenolic monomeric unit wherein the phenyl group of the phenolic monomeric unit is substituted by a group Q, wherein Q has the structure and is covalently linked to a carbon atom of the phenyl group and wherein L1, L2 and L3 are linking groups, a, b and c are 0 or 1, and T1, T2 and T3 are terminal groups. The polymer, substituted by the group Q, increases the chemical resistance of the coating.
Owner:AGFA NV
Stabilized infrared-sensitive polymerizable systems
The use of certain mercapto compounds as shelf life improvers for infrared-sensitive lithographic printing plate precursors is disclosed. The compounds are five-membered heteroaromatic rings containing a nitrogen atom and at least one other heteroatom, which can be oxygen, sulfur, or another nitrogen atom, such that two ring heteroatoms are bonded to a ring carbon bearing a thiol group.
Owner:KODAK POLYCHROME GRAPHICS
Lithographic printing plate precursor and lithographic printing method
ActiveUS20050069811A1Excellent developabilityProlong lifeRadiation applicationsSemiconductor/solid-state device manufacturingActinic RaysImage recording
A lithographic printing plate precursor comprising: a support; an image recording layer comprising (A) an actinic ray absorber, (B) a polymerization initiator, and (C) a polymerizable compound, wherein the image recording layer is capable of being removed with at least one of a printing ink and a fountain solution; and an overcoat layer comprising an inorganic laminar compound. And a lithographic printing method comprising: mounting a lithographic printing plate precursor on a printing press; imagewise exposing the lithographic printing plate precursor with laser beams; and feeding at least one of a printing ink and a fountain solution to the lithographic printing plate precursor to remove a laser beams non-exposed area in an image recording layer; and performing printing.
Owner:FUJIFILM CORP
Method for developing multilayer imageable elements
InactiveUS6992688B2Recording apparatusSemiconductor/solid-state device manufacturingSolvent basedEngineering
A method for forming an image by imaging and developing a multi-layer imageable element, in which the developer is fresh developer and the developer is not reused, is disclosed. Much smaller variation in dot percentage is obtained when each imaged imageable element is developed in fresh developer than when the developer is reused to develop additional imaged imageable elements. The method is especially suited to the formation of images using stochastic screening. Either a solvent based developer or a high pH developer may be used.
Owner:KODAK POLYCHROME GRAPHICS
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