Provided is a printed matter producing method including a foaming liquid layer forming step of applying a foaming agent-containing composition, which contains: a foaming agent; and a polymerizable compound containing a multifunctional monomer, over a print target, to form a foaming liquid layer, a defoaming agent applying step of applying a defoaming agent containing a polymerizable compound selectively over the foaming liquid layer, a defoaming agent curing step of curing the defoaming agent applied, a foaming step of heating the foaming liquid layer after the defoaming agent curing step to foam the foaming liquid layer, and a curing step of performing curing by electron beam irradiation after the foaming step.

Provided is a printed matter producing method including a foaming liquid layer forming step of applying a foaming agent-containing composition, which contains: a foaming agent; and a polymerizable compound containing a multifunctional monomer, over a print target, to form a foaming liquid layer, a defoaming agent applying step of applying a defoaming agent containing a polymerizable compound selectively over the foaming liquid layer, a defoaming agent curing step of curing the defoaming agent applied, a foaming step of heating the foaming liquid layer after the defoaming agent curing step to foam the foaming liquid layer, and a curing step of performing curing by electron beam irradiation after the foaming step.

An inkjet printing method including: discharging an ink onto a print medium, where the ink contains a polymerizable group-containing dispersion and a polymerization initiator; after the discharging, irradiating the ink with active energy rays, where the ink is discharged on the print medium; and after the irradiating, drying the ink with heat, where the ink is irradiated with the active energy rays.

A method for patterning a metal layer on a substrate is disclosed. Furthermore, a kit comprising a first composition comprising a reducing agent and a second composition comprising a metal salt, and an article comprising a substrate in contact with a metal layer are also disclosed.

A method for patterning a metal layer on a substrate is disclosed. Furthermore, a kit comprising a first composition comprising a reducing agent and a second composition comprising a metal salt, and an article comprising a substrate in contact with a metal layer are also disclosed.

Provided is an ink jet recording method including: discharging first ultraviolet curable ink of a radical polymerization reaction type which contains a radical photopolymerization initiator and a radical polymerization compound and in which transmittance at a wavelength of 395 nm is equal to or less than 1%, onto a recording medium; and curing the first ultraviolet curable ink which is landed on the recording medium by irradiating the ink with ultraviolet light, in which a light source which initially emits the ultraviolet light in the curing of the ink is an ultraviolet light emitting diode in which peak intensity of the irradiated ultraviolet light is equal to or more than 800 mW/cm.sup.2.

Provided is an ink jet recording method including: discharging first ultraviolet curable ink of a radical polymerization reaction type which contains a radical photopolymerization initiator and a radical polymerization compound and in which transmittance at a wavelength of 395 nm is equal to or less than 1%, onto a recording medium; and curing the first ultraviolet curable ink which is landed on the recording medium by irradiating the ink with ultraviolet light, in which a light source which initially emits the ultraviolet light in the curing of the ink is an ultraviolet light emitting diode in which peak intensity of the irradiated ultraviolet light is equal to or more than 800 mW/cm.sup.2.

A composition of matter includes a mixture of styrene derivative monomers and methacrylate/acrylate derivative monomers, which form hydrogen bonds between/among different precursors, and initiators, and the compositions are used to achieve composition control of the forming polymer, with the mole fraction of acrylate/methacrylate and styrene moieties in the forming polymer determined preferably by the monomer reactivity and monomer composition rather than the viscosity of the monomers.

An inkjet method for producing a solder mask in the manufacture of a Printed Circuit Board uses a solder mask inkjet ink containing at least one photo-initiator, at least one free radical polymerizable compound and at least one mercapto functionalized carboxylic acid as adhesion promoter. A high quality solder mask withstanding the high thermal stress during the soldering process while maintaining excellent physical properties is produced.

An inkjet method for producing a solder mask in the manufacture of a Printed Circuit Board uses a solder mask inkjet ink containing at least one photo-initiator, at least one free radical polymerizable compound and at least one mercapto functionalized carboxylic acid as adhesion promoter. A high quality solder mask withstanding the high thermal stress during the soldering process while maintaining excellent physical properties is produced.