The present invention relates to an electrically conductive composition comprising a) a resin selected from nitrocellulose, chlorinated polyester, chlorinated polyether, chlorinated polyvinyl, chlorinated polyacetate and mixtures thereof; b) electrically conductive particles comprising graphite and carbon black, wherein ratio of said graphite and said carbon black is from 1:1 to 5:1; and c) a solvent, where in ratio of said electrically conductive particles and said resin is from 0.20:1 to 4:1. The compositions according to the present invention can be used in high-speed printing techniques such as flexography and rotogravure printing.

Provided is an ink composition, in particular an inkjet ink composition for use in inkjet printing such as drop on demand inkjet printing or continuous inkjet printing, which is suitable for producing codes on non-porous substrates. The ink composition has a C.sub.1-6 alcohol solvent, a C.sub.3-12 ester solvent, a siloxane surfactant, and a capping resin selected from a rosin resin and a terpene phenolic resin. The ink compositions have short drying times in combination with long decap times and/or good latency.

Provided is an ink composition, in particular an inkjet ink composition for use in inkjet printing such as drop on demand inkjet printing or continuous inkjet printing, which is suitable for producing codes on non-porous substrates. The ink composition has a C.sub.1-6 alcohol solvent, a C.sub.3-12 ester solvent, a siloxane surfactant, and a capping resin selected from a rosin resin and a terpene phenolic resin. The ink compositions have short drying times in combination with long decap times and/or good latency.

An over-print varnish formulation is described. The formulation comprises a non-ionic polyurethane dispersion; a water-soluble polymer of M.sub.w less than 55,000; a wax having a particle size (d.sub.50) 200 nm or less; and a water-soluble solvent, and at least 20 wt % solids, based on the total weight of the formulation. A method of printing using the formulation, and a printed article are also described.

An over-print varnish formulation is described. The formulation comprises a non-ionic polyurethane dispersion; a water-soluble polymer of M.sub.w less than 55,000; a wax having a particle size (d.sub.50) 200 nm or less; and a water-soluble solvent, and at least 20 wt % solids, based on the total weight of the formulation. A method of printing using the formulation, and a printed article are also described.

An aqueous ink contains a titanium oxide particle, poly(acrylic acid) and potassium ions, in which the titanium oxide particle contains titanium oxide, at least part of the surface of the titanium oxide is covered with alumina and silica, and the poly(acrylic acid) content is 0.05 times or more to 0.40 times or less the alumina content in terms of a mass ratio.

An aqueous ink contains a titanium oxide particle, poly(acrylic acid) and potassium ions, in which the titanium oxide particle contains titanium oxide, at least part of the surface of the titanium oxide is covered with alumina and silica, and the poly(acrylic acid) content is 0.05 times or more to 0.40 times or less the alumina content in terms of a mass ratio.

The present invention provides a solvent composition for use in an ink for producing an electronic device using a printing method, the solvent composition being capable of improving the printing accuracy of the ink, being fired at low temperatures, and suppressing the amount of ash remaining after firing to a very low amount. The solvent composition for electronic device production of the present invention is for use in an ink for producing an electronic device by a printing method, and contains a miscible product of: a solvent and a compound represented by Formula (1) below. In Formula (1), R represents the same or different aliphatic hydrocarbon groups having 1 or more carbon atoms. ##STR00001##

The present invention provides a solvent composition for use in an ink for producing an electronic device using a printing method, the solvent composition being capable of improving the printing accuracy of the ink, being fired at low temperatures, and suppressing the amount of ash remaining after firing to a very low amount. The solvent composition for electronic device production of the present invention is for use in an ink for producing an electronic device by a printing method, and contains a miscible product of: a solvent and a compound represented by Formula (1) below. In Formula (1), R represents the same or different aliphatic hydrocarbon groups having 1 or more carbon atoms. ##STR00001##

A water-based ink for ink-jet recording includes: a pigment, resin particles, a solvent and water, wherein the resin particles are resin particles of an acrylic-based polymer; and a storage elastic modulus E at 25° C. of an ink film, of the water-based ink for ink-jet recording, which is dried and solidified is not less than 9.7×10.sup.8 Pa.