A printing ink having a first fluorescent dye acting as donor and a second fluorescent dye acting as acceptor. The first fluorescent dye, upon excitation by electromagnetic radiation falling within an excitation wavelength range λ.sub.1a of the first fluorescent dye, is capable of emitting electromagnetic radiation in at least one first emission wavelength range λ.sub.1e, said first emission wavelength range λ.sub.1e of the first fluorescent dye overlapping with at least one excitation wavelength range λ.sub.2a of the second fluorescent dye, to thereby excite the second fluorescent dye to emit electromagnetic radiation in a second emission wavelength range λ.sub.2e.

The present invention relates to an organic light emitting diode using a p-type oxide semiconductor containing gallium, and a preparation method therefor. According to the present invention, provided is an organic light emitting diode comprising an anode, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer and a cathode, wherein the hole injection layer is a p-type oxide semiconductor containing Ga.

The present invention relates to an organic light emitting diode using a p-type oxide semiconductor containing gallium, and a preparation method therefor. According to the present invention, provided is an organic light emitting diode comprising an anode, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer and a cathode, wherein the hole injection layer is a p-type oxide semiconductor containing Ga.

An inkjet recording method for printing an inkjet recording medium comprising an ink-receiving layer containing inorganic pigment, starch and copolymer latex on a surface of a base with inkjet ink as aqueous pigment ink, a content of the inorganic pigment being 10 g/m.sup.2 or more to 35 g/m.sup.2 or less in the ink-receiving layer,and a content of calcium carbonate being from 80% by weight or more to 100% by weight or less, the inkjet ink containing one or more selected from self dispersed pigment and pigment containing water-insoluble polymer particles, from 10% by weight or more to 48% by weight or less of a water-soluble organic solvent A having a boiling point of 230° C. or less, from 0% by weight or more to 5.0% by weight or less of a water-soluble organic solvent B having a boiling point of 280° C. or more, from 42% by weight or more to 70% by weight or less of water.

The present invention provides an ink composition for forming a color-changing layer that changes color by plasma treatment, the ink composition exhibiting excellent heat resistance, with the gasification of the color-changing layer or the scattering of the fine debris of the color-changing layer caused by plasma treatment being suppressed to the extent that electronic device properties are not affected. The invention provides an ink composition for forming a color-changing layer that changes color by plasma treatment, the ink composition comprising metal oxide particles containing at least one element selected from the group consisting of Mo, W, Sn, V, Ce, Te, and Bi, and a binder resin.

The present invention relates to a novel PVC-free plastisol composition that cures at a temperature much lower than conventional plastisols. Also disclosed is a method of applying the composition.

The present invention relates to a novel PVC-free plastisol composition that cures at a temperature much lower than conventional plastisols. Also disclosed is a method of applying the composition.

An ink composition is provided, a method of metalizing a surface of an insulation substrate and an article obtainable by the method are also provided. The ink composition may comprise a metal compound and an ink vehicle, the metal compound is at least one selected from a group consisting of a compound of formula I and a compound of formula II, TiO.sub.2-σ (I), M.sup.1M.sup.2.sub.pO.sub.q (II), 0.05≦σ<1.8, M.sup.1 is at least one element selected from a group consisting of groups 2, 9-12 of the periodic table according to IUPAC nomenclature, M.sup.2 is at least one element selected from a group consisting of groups 3-8, 10 and 13 of the periodic table according to IUPAC nomenclature, and 0<p≦2, and 0<q<4.

An ink composition is provided, a method of metalizing a surface of an insulation substrate and an article obtainable by the method are also provided. The ink composition may comprise a metal compound and an ink vehicle, the metal compound is at least one selected from a group consisting of a compound of formula I and a compound of formula II, TiO.sub.2-σ (I), M.sup.1M.sup.2.sub.pO.sub.q (II), 0.05≦σ<1.8, M.sup.1 is at least one element selected from a group consisting of groups 2, 9-12 of the periodic table according to IUPAC nomenclature, M.sup.2 is at least one element selected from a group consisting of groups 3-8, 10 and 13 of the periodic table according to IUPAC nomenclature, and 0<p≦2, and 0<q<4.

An aqueous dispersion of particles comprising a resin having at least one repeating unit of formula I, II and/or III and which is obtainable by contacting in a liquid comprising water, a compound A comprising at least 2 functional groups selected from the group of functional groups —X—C(═O)—CHR1-C(═O)—R2, —X—C(═O)—C≡C—R2; or —X—C(═O)—CR1=CR2-NR11R12, the functional groups are linked by a linking group comprising a polyester, polyether, polyolefin, polydimethylsiloxane or polycarbonate chain with a compound B comprising at least two —NH.sub.2, —NH.sub.3.sup.+ or —N═C═O, wherein X, R1, R2, R3, R11 and R12 have the same meaning as that defined in the claims and w. The invention also includes a method of producing the aqueous dispersion.

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