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1.发明公开
公开(公告)号：EP4316853A1
公开(公告)日：2024-02-07
申请号：EP22781234.4
申请日：2022-03-31
摘要： The present invention provides a nonaqueous ink composition which enables the achievement of a recorded matter that exhibits excellent gloss and excellent blocking resistance. A nonaqueous ink composition which contains an organic solvent and is to be ejected by means of an inkjet method, wherein the organic solvent contains an amide solvent (a) and an organic solvent (b) that is represented by the formula below.
[Chem. 1] (1): R 1 -(-O-R 2 -)n-OH
(In formula (1), R1 represents an alkyl group having 6 or less carbon atoms; R 2 represents an ethylene group or a propylene group; and n represents an integer of 2 to 6.)-
公开(公告)号：EP4249564A1
公开(公告)日：2023-09-27
申请号：EP21894606.9
申请日：2021-11-15
发明人： INUMARU, Masaki , SAITO, Yasuma , UTAKA, Koujun , IWASAWA, Karuna
摘要： Provided is an ink composition able to yield a printed adherend having high weathering resistance. This ink composition is an active energy ray curing type ink composition that is discharged using an inkjet method. The ink composition contains a polymerizable compound, an ultraviolet radiation absorber and an antioxidant. The ultraviolet radiation absorber has a maximum absorption wavelength within the range 315-400 nm. A medium containing the ultraviolet radiation absorber at a concentration of 20 ppm has an absorbance area Ab of 25.0 or more at wavelengths within the range of 315-400 nm.
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3.发明公开
公开(公告)号：EP4353483A1
公开(公告)日：2024-04-17
申请号：EP22819931.1
申请日：2022-03-31
摘要： Provided is an ink composition with which it is possible to obtain recorded matter having excellent glossiness and to effectively suppress bleeding of printing even when using any base material (recording medium) including low-absorbent base materials such as vinyl chloride resins. This ink composition contains an organic solvent, wherein the organic solvent contains the following organic solvent A, and further contains a polysiloxane surfactant in the range of 0.01-2.0% by mass (inclusive) based on the total amount of the ink composition. Organic solvent A: at least one substance selected from the group consisting of alkylamide-based solvents (a1) and cyclic amide-based solvents (a2).
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公开(公告)号：EP4316858A1
公开(公告)日：2024-02-07
申请号：EP22781255.9
申请日：2022-03-31
摘要： Provided are: a maintenance liquid having a high member suitability with respect to members constituting an ink flow path, and having excellent cleaning properties; a maintenance liquid having excellent moisture retaining properties in a plastic accommodating body and a plastic supply body of an inkjet recording device; and a maintenance liquid having high member suitability with respect to a resin cured product, and having excellent cleaning properties. This maintenance liquid for use in an inkjet recording device contains an organic solvent, wherein the moisture content of the maintenance liquid is at most equal to 5% by mass of the total amount of the maintenance liquid, and the organic solvent contains at least one of an amide-based solvent and a lactone-based solvent. Further, the maintenance liquid for use in an inkjet recording device contains an organic solvent A2, wherein the organic solvent A2 has a boiling point of 250°C or lower and a volatilization rate, upon volatilization by means of the storage test described below, of 15% by mass or less. Further, the maintenance liquid for use in an inkjet recording device provided with an inkjet head including a resin cured product, as a component member, contains an organic solvent, wherein the organic solvent contains the following organic solvent A3. Organic solvent A3: At least one solvent selected from the group comprising alkylamide-based solvents (a1), cyclic amide-based solvents (a2), and lactone-based solvents (a3)
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