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WO/1995/018019A1 |
A process for mechanically micro-roughening carrier foils for offset printing plates is disclosed, and for subsequently thermally applying hydrophilic layers on the carrier foils for offset printing plates. A web of plastic or metallic f...
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WO/1995/017306A1 |
Screen material made of wire intended in particular for screen printing cylinders, in which the holes (4) are bounded in such a way by wire pieces (1) which are joined to each other locally (2) that an at least virtually flat non-woven s...
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WO/1995/017534A1 |
A screen material is described which is formed by cladding, by means of electroplating, a structure composed of strands (4) or fibres; the structure may consist of a knit, woven or nonwoven material or alternatively of strands (4) or fib...
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WO/1995/015853A1 |
A doctor blade arrangement for web-fed gravure rotary presses with a chromium-plated copper cylinder is characterized by a doctor blade made of copper or an alloy containing predominantly copper. The roughness of the cylinder surface is ...
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WO/1995/014755A1 |
There are provided low VOC content cleaning compositions comprising an admixture of (a) at least one high VOC content unsaturated, substituted or unsubstituted, interrupted or uninterrupted hydrocarbon solvent; (b) at least one low VOC c...
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WO/1995/013924A1 |
The specification discloses a thermal stencil paper for mimeograph, having a uniform shape of pores and well-balanced retainability and permeability of printing ink. Thermal stencil paper for mimeograph formed by laminating a porous supp...
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WO/1995/012836A1 |
A lithographic printing plate for use on a printing press, with minimal or no additional processing after exposure to actinic radiation, comprises a printing plate substrate, a polymeric resist layer capable of imagewise photodegradation...
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WO/1995/010384A1 |
Substantial surface areas (10) can be treated by continuously magnetically moving an electric arc (14) on the surface substantially continuously around a general loop direction such as a circle, ellipse or oval and moving the surface so ...
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WO/1995/009087A1 |
Provides herein is a brushgraining process to improve the quality of lithographic printing plate substrate surfaces. In the process, the surface is brushed in an aqueous slurry comprising a mixture of particulates of alumina and quartz i...
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WO/1995/009384A1 |
Provided herein a process to improve the hydrophilicity of the surface of the substrate for a lithographic printing plate. The inventive process comprises treating said surface with a solution of polyvinyl phosphonic acid which is mainta...
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WO/1995/009086A1 |
Provided herein is an improved process to prepare lithographic printing plates. An embodiment of the process comprises mechanical graining of the substrate surface, followed by electrochemical graining in an acid medium using a symmetric...
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WO/1995/008444A2 |
The method of the invention consists in providing on the blanket (4) of the printing machine, at the locations where the perforating rules are bearing, counter-bearing bands, made of flexible but resistant material, said bands being secu...
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WO/1995/008408A1 |
Aluminium sheet suitable for use as a lithographic plate support has a surface that is uniformly rough by virtue of: a rippled topography having an aspect ratio of at least 1.3 on a scale of 5 - 200 'mu'm; and a superimposed pitted struc...
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WO/1995/005826A1 |
Methods are described for regulating neuropeptide secretion to alleviate premature labor, hypertension, fluid imbalance, and risk of heart disease using neuroactive steroids targeted for a newly-identified site of action in the nerve ter...
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WO/1995/005287A1 |
A printing plate material which can form uneven patterns on its surface even with a low laser energy and enables printing while preventing scumming of a print is produced by forming on a support a photosensitive layer containing nitrocel...
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WO/1995/003177A1 |
The present invention refers to a process and a device for treating the washing liquid in printing presses, particularly for offset printing presses. The treatment process consists of subjecting the washing liquid, which is based on wate...
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WO/1995/002511A1 |
A process is disclosed for producing an inking roller provided with a ceramic coating. A protective layer is applied on a roller body, and a porous layer of an ink-friendly, very wear-resistant material is applied on the protective layer...
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WO/1994/027831A1 |
Process for producing metal matrixes (15) that can be removed from the mandrels (18) of rotogravure printing machines, with an electrolytic copper film (24), to be engraved, laid over the base (21) of the nickel matrix (15), there being ...
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WO/1994/026534A1 |
A process is disclosed for producing print rolls made of a metallic core cylinder and a plasma-sprayed copper or copper alloy coating which may be easily shaped by mechanical means into an only slightly rough, homogeneous closed surface ...
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WO/1994/025285A1 |
This invention discloses heat-sensitive stencil paper and a production method thereof. Since no adhesive is used in this paper, the permeability to printing ink is not affected, and thus high-quality prints are obtained. The elimination ...
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WO/1994/025284A2 |
A printing sleeve for a flexographic printing process is prepared by spirally winding successive adhesive coated tapes (40, 42) onto a forming mandrel (22) such that the outer tape covers the seam in the previous layer, providing heat to...
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WO/1994/019190A1 |
An apparatus for continuously providing dampening fluid to a plate cylinder (12) of a lithographic printing press includes a frame (82) operatively connected to the printing press. A dampening fluid reservoir (16) is attached. A pan roll...
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WO/1994/013472A1 |
A composite metallurgical product includes a roll cast aluminum alloy core and a filler material bonded on the core. Assemblies joined by filler material are formed from this product by heating to flow the filler material into joints and...
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WO/1994/009993A1 |
An assistant for printing which contains water soluble hemicellulose as an effective component. This assistant has excellent film formation characteristics, long shelf life, excellent emulsification characteristics, excellent desensitiza...
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WO/1994/007697A1 |
A stencil for mounting in tension on a mount for use in screen printing is formed with one or more regions of weakness located in the region of at least one edge of the foil. It has been found that by providing regions of weakness in the...
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WO/1994/006873A1 |
An ink composition incorporating a water reducible resin which is water insoluble under certain conditions and selectively water washable under certain other conditions. The method aspect of the present invention relates to a method of m...
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WO/1994/006718A1 |
A method of cleaning waste water and removing contaminants therefrom with respect to compositions exhibiting water solubility behaviour which is pH dependent. The method includes the preliminary step of applying the composition at a pH a...
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WO/1994/006573A1 |
A method and composition for clean up of an oil based or water insoluble composition using an aqueous solution. The clean up composition includes 5 - 60 % by weight of a solubility controlling component exhibiting pH dependent water solu...
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WO/1994/005507A1 |
A method of making a light sensitive printing plate, such as might be used in lithography, comprises creating a surface layer on substrate base material by depositing particulate coating material on the base material using a dry depositi...
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WO/1994/004361A1 |
In the method proposed, grooves (2, 3) which are connected to each other are machined in a base mould (7), the minimum width of the grooves corresponding to the "mesh size" (a) and the maximum width of the grooves corresponding to the ma...
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WO/1994/002259A1 |
A printing blanket (11) which resists gauge loss throughout its useful life when subjected to printing nip pressures by retaining at least 95 % of its original gauge throughout the useful life of the printing blanket. The printing blanke...
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WO/1994/002113A1 |
Methods of using cultured plant cell gums in the paper, adhesive, oil and gas, ink, lithography, textile, paint, ceramics, cleaning detergents, cosmetics, photography, explosive, firefighting, agricultural, and other industries are descr...
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WO/1994/001280A1 |
A driographic printing plate precursor comprises a base substrate, an infrared radiation ablatable ink repellant coating on the substrate, and a transparent cover sheet on the coating. An image is formed on the plate by sequentially expo...
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WO/1993/023253A1 |
A process for making a multilayer flexographic printing plate which involves reinforcing and laser engraving a multilayer flexographic printing element.
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WO/1993/023252A1 |
A process for making a single layer flexographic printing plate which involves reinforcing and laser engraving a single layer flexographic printing element.
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WO/1993/019939A2 |
The present invention relates to a method and apparatus for printing in which the fountain solution for a lithographic printing device is treated by the direct injection of electromagnetic radiation. Most preferably, the electromagnetic ...
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WO/1993/018913A1 |
A laminated printing blanket (5) having compressible and resilient properties and a method for its production are provided. The compressible characteristics are provided by disposing an intermediate layer (10) having substantially unifor...
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WO/1993/014939A1 |
A granulate suitable for offset printing is described which is free of dust and dissolves or disperses quickly in water and can thus be used as a rubber coating material or as a developer. This makes the handling thereof easier.
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WO/1993/010979A1 |
A presensitized litho plate (1) for offset printing comprises a backing film (2) fashioned in plastic material, a sheet of aluminium foil (4) bonded to the backing film by means of adhesive (3), and a coating (7) of photosensitive varnis...
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WO/1993/009941A1 |
A multi-ply laminated compressible printing blanket (10) for use in offset printing comprising in order, a first compressible fabric ply (12), a compressible elastomeric layer (24), at least two additional fabric plys (32, 34) situated a...
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WO/1993/009952A1 |
A printing blanket (15) adapted to be used with a magnetic printing cylinder (12) including a gap (16) extending longitudinally along the outer surface thereof is provided. The printing blanket (15) includes a plurality of piles (14) wit...
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WO/1993/009957A1 |
A lithographic printing plate that is transformable by spark-discharge techniques so as to change its affinity for ink. The plate features a metal substrate and includes a conductive layer and an ink-adhesive coating. The plate can also ...
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WO/1993/008983A1 |
A compressible layer (5) used in forming a printing blanket (1) or a printing cushion is made to have a uniform compressibility factor over its useful life. This is accomplished by evenly dispersning both closed and open soluble cell str...
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WO/1993/004401A1 |
A deletion fluid for lithographic printing plates comprising a silver image formed by the silver salt diffusion transfer process comprising an aqueous solution containing iodine and an iodide salt characterised in that it contains from 1...
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WO/1993/001942A1 |
Aluminum, or an alloy thereof, is grained in a two-stage process wherein it is subjected to an electric current while immersed in an acidic electrolyte solution, such as a solution comprised of hydrochloric acid and aluminum chloride. Cu...
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WO/1993/001003A1 |
A printing blanket construction and method for reducing corrosion of printing blanket cylinders is provided. The printing blanket (11) comprises at least one base ply (12, 13) and a surface layer (10) on one surface of the base ply where...
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WO/1993/000411A1 |
An additive for lithographic printing fountain solutions to replace isopropyl or ethyl alcohols is defined that comprises a volatile material that lowers the surface tension of the fountain solution. The volatility of the material with r...
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WO/1992/022688A1 |
A method of electrochemically roughening an aluminium metal sheet for use as a lithographic plate support comprises subjecting the sheet in an electrolyte to an alternating current treatment. Treatment is performed in the presence of at ...
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WO/1992/021795A1 |
Aluminium sheet is electrochemically roughened for use as a lithographic printing plate support or as capacitor foil. The alternating current used for electrochemical roughening is initially biased in a first way, e.g. anodically, and th...
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WO/1992/019455A1 |
The invention relates to a moistening agent for use in the offset printing process. This moistening agent contains no monovalent alcohols, thus making it possible to avoid the environmentally polluting, toxic and hazardous properties of ...
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