Water based, energy curable ink jet compositions that have good insulating properties are described herein. The inventive water based energy curable ink jet compositions include a water soluble or water dispersible component polymerizable by free radical polymeration upon exposure to polymerizing radiation, wherein the cured ink jet compositions have good insulating properties, exhibited for example, by its breakdown voltage. Also described are electronic devices including ink jet-printed layers of the ink jet compositions.

A free radical UV curable inkjet ink set includes a free radical UV curable primer containing: one or more photoinitiators; a mixture of at least two monomers according to Formula (I): ##STR00001##
wherein n represents an integer 0 or 1, k represents an integer selected from the range of 0 to 3, and R represents hydrogen or phenyl; 0.0 to 4.0 wt % of a polyfunctional monomer; 0.0 to 2.0 wt % of an organosilane coupling agent; and 0.0 to 10.0 wt % of a N-vinyllactam monomer; and one or more free radical UV curable inkjet inks containing: a colour pigment; one or more photoinitiators; and at least 50.0 wt % of one or more monoacrylate monomers; wherein the mixture of at least two monomers according to Formula (I) includes 3.0 to 50.0 wt % of a first monomer having n=1 and R representing phenyl and 35.0 to 90.0 wt % of a second monomer having n=0 and R representing phenyl.

An aqueous energy curable inkjet ink that includes (A) an emulsified water-insoluble photopolymerizable compound, (B) a resin, which may be (B1) a photopolymerizable resin or (B2) a non-photopolymerizable resin, (C) a polyether macromer-modified poly(meth)acrylate, and (D) at least 25 wt. % water, based on a total weight of the aqueous energy curable inkjet ink. A printed article including the aqueous energy curable inkjet ink in dried and cured form, and a method of forming a printed image with an inkjet printhead are also provided.

A dryer includes a pressure plate and a plurality of heating bulbs configured to emit short wave infrared radiation. A hood of the dryer is coupled to an exhaust vent and a fan. One or more sensors of the dryer measure a drying parameter corresponding to at least a portion of an article to be dried. One or more sensors in the exhaust vent monitor the air being drawn from under the hood and through the exhaust vent. A controller receives data from at least one of the sensors, and uses the data to regulate operation of each heating bulb independently of other heating bulbs of the dryer.

A printing apparatus, including a discharging head for discharging ultraviolet-curable ink droplets, an energizer to supply energy to the ink droplets, a carriage with the discharging head and the energizer mounted thereon movable in a main scanning direction, and a controller, is provided. The controller forms a dots-linked portion having a plurality of the ink droplets landed on the printable medium being linked with one another and cured in a shape elongated in the main scanning direction. The controller forms both a dividing dot and a divided-dots linking portion or the divided-dots linking portion alone. The dividing dot is formed of a single one of the ink droplets cured independently at a position to one of adjoin and overlap the dots-linked portion in the main scanning direction. The divided-dots linking portion has a plurality of the ink droplets being linked and cured in a shape elongated in a sub-scanning direction.

An image forming apparatus includes a liquid discharge head, an irradiation unit, a carriage, and a moving unit. The liquid discharge head discharges a liquid onto a recording medium. The liquid includes a metallic ink and a color ink. The irradiation unit irradiates the liquid on the recording medium with light. The liquid discharge head and the irradiation unit are mounted on the carriage. The moving unit alternately perform a main scanning movement and a sub-scanning movement. The liquid discharge head discharges the metallic ink in a region of the recording medium in a former main scanning movement and discharges the color ink in the region in which the metallic ink has been discharged, in a latter main scanning movement after the former main scanning movement. The irradiation unit irradiates the region in which the color ink has been discharged with the light.

An object of the present invention is to provide a coating agent for a film that can exhibit sufficient adhesion to a film even when the active energy ray-curable ink is used. The present invention provides a coating agent for a film including a compound (a) having two or more (meth)acryloyl groups and an isocyanate group.

A method for forming a conductive fine pattern according to an embodiment forms a conductive fine pattern on a substrate having identical surface energy by using inkjet printing for printing ink along a path. The method includes a droplet ejection process of simultaneously performing, discharging photocurable ink at the front side of the path, discharging volatile ink containing minute metal particles at the rear side of the path, and applying light energy to the discharged photocurable ink. The light energy is configured to have a light intensity such that: the photocurable ink is semi-cured and ejected in a gel state on the substrate, and thus forms a boundary with liquid volatile ink ejected on the substrate; and the photocurable ink is completely cured after the ejection of both the photocurable ink and the volatile ink is completed.

An object of the present invention is to provide a method for producing printed material on which active energy ray-curable ink is printed, the method being capable of improving print density without impairing gradation expressivity.

The present invention is a method for producing printed material, the method including, in order: a transfer process of transferring ink to a transfer target surface of a substrate; and an impression process of bringing each of impression cylinders into contact with the transfer target surface to which the ink has been transferred, and at least one of the impression cylinders has a patterned impression part.

Provided is a method for dyeing a polymer material with an aqueous pigment composition containing at least one pigment dispersed therein, wherein the polymer material is a blend including a first polymer composition and a second polymer composition which is compatible with the first polymer composition, which second polymer composition includes a binding agent for the at least one pigment. The method includes the steps of heating the polymer material to an activation temperature below the softening temperature of the polymer material, contacting the polymer material with the aqueous pigment composition at a contact temperature for a period of time sufficient to form a pigmented polymer material, subjecting the pigmented polymer material to a fixation step to fixate the at least one pigment therein by cooling the pigmented polymer material to a fixation temperature which is lower than the temperature at which contacting of the polymer material with the aqueous pigment composition is carried out.