Kodak Polychrome Graphics, Gmbh

Sun Chemical Corporation

Other

Basf Corporation

Inmont Corporation

Package Machinery Co. Inc.

Edward P Stone

Patrice M Aurenty

Gordon Kotora

Alexander Grant

William P Keaveney

Mikhail Laksin

Subhankar Chatterjee

Robert J Catena

Matthew Guagliardo

Jitendra Modi

Bhalendra J Patel

Basil Wasyliw

Mark J Lindsey

Russell J Schwartz

Oren A Mosher

Paul Andrew Merchak

Robert Auerbach

Neil Young

Oren G Mosher

John G Pucknat

Roshanak Debeaud

Joseph Zamer

Jen-Chi Huang

Ana Marie Flores

Patrice Aurenty

Paul A Merchak

Solid, solvent-free inks are provided for use in hot melt flexographic printing. The ink is composed of a pigment; a thermoplastic binder which is an ethylene copolymer, a hydrocarbon resin, or a combination thereof; a wax which is a highly branched hydrocarbon wax, a polyethylene homopolymer wax, an oxidized polyethylene wax, an animal wax, a vegetable wax or combinations thereof; a solid linear alcohol; and, a dispersing agent. The ink may also contain a solid plasticizer. The solid ink has a melting point of about 75&#xb0; C. or greater, and when heated to a temperature between about 90&#xb0; C. and about 135&#xb0; C., a molten ink is formed which has a viscosity between about 100 cps and about 1200 cps. The solid inks are used in melt flexographic printing by heating the ink to a temperature greater than about 90&#xb0; C. to form a molten ink which has a viscosity between about 100 cps and about 1200 cps; applying the molten ink to the surface of a heated anilox roller in operational contact with a heated flexographic printing plate; and printing the applied molten ink from the printing plate onto a substrate such as conventional print stock, polymeric films, metal sheets, etc.

Hot melt flexographic inks and method of preparing same

Solvent-free, energy curable low viscosity gravure and non-conductive ink jet inks which contain a pigment; a rheological additive having the structure P&mdash;(U&mdash;Y) , wherein P is the residue of an organic pigment or dye, Y is a polyalkylene oxide moiety, U is a linking moiety covalently bonding Y to P and s is an integer from 1 to 3; and an energy curable liquid vehicle which may be a cationic, thermal cationic or a free radical initiated polymerization system, cured by actinic radiation; and optionally containing a photoinitiating system.

Energy curable gravure inks incorporating grafted pigments

A hot melt ink composition containing a an alkylene distearate which improves the color strength of the ink and is formed as a reaction product of a C -C diol and at least one acid selected from the group consisting of a C -C monofunctional acid and a C -C difunctional acid.

Phase change gravure inks and methods of printing with same

An energy curable printing ink composition containing a branched polyester comprising monofunctional and difunctional components having an excess functionality of about 0.1 to 0.20. Also described is a method of reducing misting and/or dot gain in an energy curable printing ink composition by adding such branched polyesters to the composition.

Energy curable inks and methods of preparing same

A printing plate is prepared by the process comprising: (a) providing a substrate; and (b) applying by ink jetting to the substrate a fluid composition comprising a cationic polymer and an anionic polymer, in non-aqueous solvent. The ionic polymers interact and adhere to the substrate, so that after drying a durable printing plate is formed, without chemical development. The printing plate of this invention is capable of extended press run length and advantageously avoids the need of chemical development.

Printing plate and method to prepare a printing plate

An Offset Lithographic Printing Process employing low VOC lithographic printing ink formulations containing monomeric diluents, curable by cationic polymerization in the presence of fountain solution and resin rheology modifiers compatible with cationic catalysts.

Low VOC cationic curable lithographic printing inks

A printing plate is prepared by the method comprising: (a) providing a substrate; and (b) applying by ink jetting to the substrate a fluid composition comprising an acidic polymeric compound, in which the acid groups of the acidic polymeric compound are at least partially neutralized with base, providing a printing plate that is ready-to-use on a press without having to develop it. The printing plate of this invention is capable of extended press run length and advantageously avoids the need of chemical development.

Method of preparing a printing plate and printing plate

A printing plate is prepared by the process including: (a) providing a substrate; and (b) applying by ink jetting to the substrate a fluid composition comprising a compound which comprises at least one nitrogen-containing heterocyclic moiety, providing a printing plate that is ready-to-use on a press without having to develop it. The printing plate of this invention is capable of extended press run length and advantageously avoids the need of chemical development.

Method to prepare a printing plate and printing plate

A fluid composition suitable for ink jetting upon a substrate, which includes a copolymer having a low surface energy and a plurality of tertiary amine sites, where the tertiary amine sites are at least partially neutralized with an acid; a nonionic or cationic surfactant; and water. The fluid composition may be used to prepare a printable media comprised of a substrate and an ink receptive thermoplastic image layer supported on the substrate; where the ink receptive layer contains a copolymer having a low surface energy and a plurality of tertiary amine sites, the amine sites being at least partially neutralized with an acid. The invention also relates to a method for preparing a printable media by applying a fluid composition onto a substrate having at least one basic surface by means of an ink jet printing apparatus; where the fluid composition contains a copolymer having a plurality of tertiary amine sites, the amine sites being at least partially neutralized with an acid, and drying the fluid composition.

Lithographic printing printable media and process for the production thereof

Lithographic printing ink formulations compatible with cationic catalysts containing a diluent and rheology modifying resins curable by cationic polymerization in the presence of water or fountain solution.

A printing plate is prepared by the method comprising: (a) providing a substrate; and (b) applying by ink jetting to the substrate a fluid composition comprising a compound which comprises at least one nitrogen-containing heterocyclic moiety, providing a printing plate that is ready-to-use on a press without having to develop it. The printing plate of this invention is capable of extended press run length and advantageously avoids the need of chemical development.

A method of preparing a printing plate for printing comprises applying a fluid composition by ink jetting to a substrate, and thereafter curing the fluid applied to the substrate. The fluid composition is jetted onto the substrate at a jetting temperature T . The substrate is at a temperature T . The viscosity of the fluid composition at temperature T is about at least 300 times greater than the fluid's viscosity at temperature T . The invention minimizes the dot spreading which otherwise occurs when a substrate is imaged via ink jetting to prepare a printing plate.

Method of controlling image resolution on a substrate

A printing plate is prepared by the process comprising: (a) providing a substrate; and (b) applying by ink jetting to the substrate a fluid composition comprising an acidic polymeric compound and a second compound comprising a pyridyl group in non-aqueous solvent, providing a printing plate that is ready-to-use on a press without having to develop it. The printing plate of this invention is capable of extended press run length and advantageously avoids the costly and time-consuming need of chemical development.

A printing plate precursor for direct receipt of an image-wise applied ink receptive layer the precursor having a desorbable surfactant adsorbed on at least one surface in an amount effective to improve the resolution of the subsequently image-wise applied ink receptive layer. The printing plate precursor can be used to prepare a printing plate having improved resolution. The printing plate may be prepared by (a) applying a desorbable surfactant to at least one surface of a printing plate substrate, (b) removing non-adsorbed surfactant from the surface, (c) applying a fluid composition containing an ink receptive material onto at least a portion of the surface in the form of a desired image, thereby providing an ink receptive image layer; and (d) removing the desorbable surfactant from any area of the surface which does not form part of the desired image.

Surfactant-pretreated printing plate substrate, lithographic printing plate and method for production thereof

A low-foaming resin-fortified latex comprising a dispersed acrylic polymer, polyelectrolyte resin and a non-ionic emulsifier with an HLB value of 13 or less.

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Oakland, CA, United States of America

Edward P Stone