A black ink composition includes: carbon black and a water-insoluble resin that covers at least a part of the surface of the carbon black; a cyan pigment and a water-insoluble resin that covers at least a part of the surface of the cyan pigment; a magenta pigment and a water-insoluble resin that covers at least a part of the surface of the magenta pigment; water-insoluble resin particle; and water, wherein a content ratio of the carbon black is from 1.0 to 2.0% by mass with respect to the total mass of the composition, and a total amount of pigments is from 1.8 to 3.5% by mass with respect to the total mass of the composition. The black ink composition can be used in an ink set and an image forming method.

The present invention relates to a UV-curable ink composition, a method for producing a bezel pattern of a display substrate using same, and a bezel pattern produced thereby, the UV-curable ink composition comprising a colorant, an epoxy resin, an oxetane resin, a photopolymerization initiator, and a surfactant comprising a polar functional group, wherein the content ratio of the epoxy resin to the oxetane resin is 1:0.5-1:6.

Provided are a radiation-curable ink composition including phenoxyethyl acrylate (A) in an amount of from 20 to 55 mass % of the total reaction components, a multifunctional acrylate (B) in an amount of from 20 to 50 mass % of the total reaction components, and a black pigment (F1); and a radiation-curable ink composition including phenoxyethyl acrylate (A) in an amount of from 20 to 55 mass % of the total reaction components, a multifunctional acrylate (B) in an amount of from 10 to 50 mass % of the total reaction components, and a yellow pigment (F2).

Provided are a radiation-curable ink composition including phenoxyethyl acrylate (A) in an amount of from 20 to 55 mass % of the total reaction components, a multifunctional acrylate (B) in an amount of from 20 to 50 mass % of the total reaction components, and a black pigment (F1); and a radiation-curable ink composition including phenoxyethyl acrylate (A) in an amount of from 20 to 55 mass % of the total reaction components, a multifunctional acrylate (B) in an amount of from 10 to 50 mass % of the total reaction components, and a yellow pigment (F2).

Provided is an ink containing a compound represented by general formula (1) below where R.sub.1 represents a hydrogen atom or a methyl group, n represents an integer of 2 or greater, a plurality of R.sub.1 may be the same as or different from each other, X represents a hydrocarbon group having 2 to 10 carbon atoms, Y represents a tertiary hydroxyl group, or a group having an ester structure, and m represents an integer of 1 or greater.

Provided is an ink containing a compound represented by general formula (1) below where R.sub.1 represents a hydrogen atom or a methyl group, n represents an integer of 2 or greater, a plurality of R.sub.1 may be the same as or different from each other, X represents a hydrocarbon group having 2 to 10 carbon atoms, Y represents a tertiary hydroxyl group, or a group having an ester structure, and m represents an integer of 1 or greater.

An aqueous ink for ink jet containing a self-dispersible pigment, an aromatic sulfinic acid or a salt thereof and an aromatic sulfonic acid or a salt thereof.

An aqueous ink for ink jet containing a self-dispersible pigment, a compound represented by General Formula (I):

##STR00001##

where in General Formula (I) each R1 independently represents a hydrogen atom or an alkyl group.

An aqueous ink containing a self-dispersible pigment for use in an ink jet recording method using a recording head that ejects an ink by an action of thermal energy. The aqueous ink contains a compound represented by General Formula (I):

##STR00001##

where in General Formula (I) R.sub.1's are independently of each other, a sulfonic acid group, a carboxylic acid group, a phosphoric acid group or a phosphonic acid group, R.sub.2 is a hydrogen atom or an alkyl group, and n is an integer of 1 to 5.

An aqueous ink containing a self-dispersible pigment for use in an ink jet recording method using a recording head that ejects an ink by an action of thermal energy. The aqueous ink contains a compound represented by General Formula (I):

##STR00001##

where in General Formula (I) R.sub.1's are independently of each other, a sulfonic acid group, a carboxylic acid group, a phosphoric acid group or a phosphonic acid group, R.sub.2 is a hydrogen atom or an alkyl group, and n is an integer of 1 to 5.