摘要:
An ink jet recording method uses an ink jet recording apparatus including a plurality of heads arranged in parallel in a first direction, each of which ejects droplets of a different radiation-curable ink composition onto a recording medium, and first light sources provided for corresponding heads so as to be disposed at a predetermined side of the corresponding heads. The first light sources emit active radiation to irradiate the droplets on the recording medium. The method includes ejecting droplets of the ink compositions from the heads onto the recording medium, and performing a first irradiation by irradiating the droplets of each ink composition with the active radiation from the corresponding first light source at an irradiation energy within 500 ms after the droplets have landed. The irradiation energy is in the range of 5% to 10% of the energy E90 at which the ink composition is 90% cured.
摘要:
An ink composition has a viscosity of 25 mPa·s to 35 mPa·s at 20° C., wherein a, b, and c are 800 or more, 7.4 to 14, and 0.16 to 0.22, respectively, when a cylindrical portion is formed by expanding the ink composition so as to have a free surface parallel to the expanding direction of the ink composition, the rate of change in width of the cylindrical portion with time is measured in the expanding direction thereof, and the rate of change in width of the cylindrical portion with time is fit to a quadratic function given by the following equation: S=−at2−bt+c (1) where S is the rate of change in width of the cylindrical portion and t is the time in seconds.
摘要:
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).
摘要:
An ink composition has a viscosity of 25 mPa·s to 35 mPa·s at 20° C., wherein a, b, and c are 800 or more, 7.4 to 14, and 0.16 to 0.22, respectively, when a cylindrical portion is formed by expanding the ink composition so as to have a free surface parallel to the expanding direction of the ink composition, the rate of change in width of the cylindrical portion with time is measured in the expanding direction thereof, and the rate of change in width of the cylindrical portion with time is fit to a quadratic function given by the following equation: S=−at2−bt+c (1) where S is the rate of change in width of the cylindrical portion and t is the time in seconds.
摘要:
The invention provides metal powder constituted from metal particles. Each of the metal particles comprises a base particle having a surface and a metal material constituting at least the surface of the base particle. The base particle is subjected to a surface treatment with a fluorine type phosphoric acid ester. Further, the invention also provides an ultraviolet ray curable ink jet composition to be ejected by using an ink jet method. The ultraviolet ray curable ink jet composition comprises a polymerizable compound and metal powder constituted from metal particles. The metal particles of the metal powder are subjected to a surface treatment with a fluorine type phosphoric acid ester.
摘要:
An ultraviolet ray curable ink jet composition of the present invention is characterized by being adapted to be ejected using an ink jet method and containing: a polymerizable compound; metal particles subjected to a surface treatment; and a substance A having a partial structure represented by the following formula (1), where R1 is a hydrogen atom, a hydrocarbon group or an alkoxy silyl group, and each of R2, R3, R4 and R5 is independently a hydrogen atom or a hydrocarbon group.
摘要:
A radiation-curable ink composition contains (A) aminoacrylate at 1 mass % to 10 mass %, inclusive, (B) phenoxyethyl acrylate at 20 mass % to 50 mass %, inclusive, and (C) tetraethylene glycol diacrylate at 1 mass % to 20 mass %, inclusive, in its reaction component, as well as (E) bis(2,4,6-trimethylbenzoyl)-phenylphosphine oxide at 3 parts by mass to 8 parts by mass, inclusive, (F) 2,4,6-trimethylbenzoyl-diphenyl-phosphine oxide at 3 parts by mass to 5 parts by mass, inclusive, in 100 parts by mass of the reaction component, and (G) diethylthioxanthone at 1 part by mass to 3 parts by mass, inclusive, in 100 parts by mass of the reaction component.
摘要:
Provided is a UV curable type ink-jet ink composition containing a monomer A which is expressed by the following general formula (I): CH2═CR1—COOR2—O—CH═CH—R3 (I) (in the formula, R1 is a hydrogen atom or methyl radical, R2 is a bivalent organic residue radical having a carbon number in a range of 2 to 20, and R3 is a hydrogen atom or a univalent organic residue radical having a carbon number in a range of 1 to 11), a compound B containing five or more (meth)acryloyl radicals per molecule, and a monofunctional (meth)acrylate C having an aromatic ring skeleton, wherein the monofunctional (meth)acrylate C which is in a range of 5 to 35 wt % with respect to the total weight of the ink composition is contained, wherein the compound B is in a range of 5 to 40 wt % with respect to the total weight of the ink composition, wherein the monomer A is in a range of 10 to 70 wt % with respect to the total weight of the ink composition.
摘要:
A radiation-curable ink composition includes an acrylate monomer of which homopolymer has a glass transition temperature of not higher than 0° C. in an amount of 20% by mass or more and 65% by mass or less based on the total amount of reaction components; a monofunctional acrylate having an alicyclic structure; and a multifunctional acrylate having an alicyclic structure.
摘要:
An image forming method, including: a first process for ejecting liquid droplets of a radiation curable ink composition onto a recording medium from an ejection head capable of ejecting the radiation curable ink composition using an ink jet recording device; and a second process for irradiating the liquid droplets with active radiation by an irradiation measure capable of emitting the active radiation, in which, among the liquid droplets of the radiation curable ink composition irradiated with the active radiation, a difference of the total irradiation energy of a liquid droplet having the highest total irradiation energy of the active radiation and a liquid droplet having the lowest total irradiation energy of the active radiation in the second process is 30% or more and 50% or lower of the irradiation energy (E90) [mJ/cm2] required for curing 90% of the radiation curable ink composition.
摘要翻译:一种图像形成方法,包括:从能够使用喷墨记录装置喷射可辐射固化油墨组合物的喷射头将可辐射固化油墨组合物的液滴喷射到记录介质上的第一过程; 以及通过能够发射活性辐射的照射措施用活性辐射照射液滴的第二种方法,其中在辐射固化型油墨组合物的液滴中,用有源辐射照射的辐射固化型油墨组合物的液滴之间的总照射能量的差异 在第二过程中,有效辐射的总照射能量最高的总体照射能量和活性辐射总照射能量最低的液滴是照射能量(E90)的30%以上且50%以下[mJ / cm 2],用于固化90%的可辐射固化油墨组合物。