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公开(公告)号：US09358771B2
公开(公告)日：2016-06-07
申请号：US14762022
申请日：2014-03-24
Applicant: TOYOBO CO., LTD.
Inventor： Yukimi Yawata , Daiki Yoshioka , Kazuya Yoshimoto
Abstract: A method is disclosed for producing a flexographic printing plate from a flexographic printing original plate provided with a photosensitive resin layer comprising a photosensitive resin composition containing at least (A) a hydrophobic polymer comprising a water-dispersible latex, (B) a photopolymerizable compound and (C) a photopolymerization initiator, wherein the method comprises a main exposure step, a development step and a post-exposure step, characterized in that a treatment solution containing a first amino-modified silicone having an amine equivalent of 1000 g/mol or less and a second amino-modified silicone having an amine equivalent of 3000 g/mol or more in a mass ratio of from 2.5:1 to 1:6 is contacted with the whole surface of the flexographic printing plate.
Abstract translation: 公开了一种用于由柔性版印刷原版制造柔性版印刷版的方法，所述柔性版印刷版具有感光性树脂层，所述感光性树脂层包含至少含有（A）含有水分散性胶乳的疏水性聚合物的感光性树脂组合物，（B）光聚合性化合物和 （C）光聚合引发剂，其中所述方法包括主曝光步骤，显影步骤和曝光后步骤，其特征在于，含有胺当量为1000g / mol以下的第一氨基改性硅氧烷的处理溶液 并且以质量比为2.5:1至1:6的胺当量为3000g / mol以上的第二氨基改性的硅氧烷与柔版印刷版的整个表面接触。
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公开(公告)号：US20220390842A1
公开(公告)日：2022-12-08
申请号：US17790036
申请日：2020-12-21
Applicant: TOYOBO CO., LTD.
Inventor： Kazuya Yoshimoto
Abstract: The present invention relates to a laser-engravable flexographic printing original plate in which an increase in time required for entire surface curing is suppressed while benefiting from a decrease in plate surface tackiness due to blending of the silicone compound. A laser-engravable flexographic printing original plate obtained by irradiating a molded product made of a photosensitive resin composition with light so as to cross-link and cure the molded product, in which the photosensitive resin composition contains a water-dispersible latex, a photopolymerizable unsaturated compound, a photopolymerization initiator, and a silicone compound having an amino group in the molecule. When the water-dispersible latex is selected from polybutadiene rubber and poly(nitrile-butadiene) rubber, the silicone compound has a refractive index of 1.44 to 1.60. When the water-dispersible latex is poly(styrene-butadiene) rubber, the silicone compound has a refractive index of 1.47 to 1.63.
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公开(公告)号：US20220283502A1
公开(公告)日：2022-09-08
申请号：US17634166
申请日：2020-07-30
Applicant: TOYOBO CO., LTD.
Inventor： Kazuya Yoshimoto , Eri Higo , Masahiko Nakamori
Abstract: The present invention provides a flexographic printing plate precursor which makes it possible to precisely reproduce the pattern of a microcell on the surface of a printing plate without requiring the use of any specialized device or any additional step, and thus to improve the ink laydown on a solid-printed part. A flexographic printing plate precursor comprising at least a support (A), a photosensitive resin layer (B), an oxygen barrier layer (C) and a heat-sensitive mask layer (D) which are laminated in this order, wherein a photosensitive resin composition constituting the photosensitive resin layer (B) comprises (a) a polymer prepared by polymerizing a conjugated diene, (b) an ethylenically unsaturated compound and (c) a photopolymerization initiator, and wherein the content of the photopolymerization initiator (c) in the photosensitive resin composition is 2 to 9% by mass.
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公开(公告)号：US10807400B2
公开(公告)日：2020-10-20
申请号：US15754398
申请日：2016-08-02
Applicant: TOYOBO CO., LTD.
Inventor： Kazuya Yoshimoto , Atsushi Tatsuyama , Jun Hasuike
Abstract: The present invention provides a photosensitive resin composition for a relief printing original plate which can achieve both of a printing reproducibility of gradation of a highlight part and a printing durability, and can further achieve a low plate surface tackiness. A photosensitive resin composition for a relief printing original plate containing water-soluble or water-dispersible polyamide, a photopolymerizable unsaturated compound and a photopolymerization initiator as essential ingredients, characterized in that a total of a content of an alicyclic structural unit obtained from diamine and a content of an alicyclic structural unit obtained from dicarboxylic acid in the polyamide is 30 to 90 molar %, and the content of the alicyclic structural unit obtained from dicarboxylic acid in the polyamide is 20 molar % or more.
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公开(公告)号：US20220314679A1
公开(公告)日：2022-10-06
申请号：US17633700
申请日：2020-07-01
Applicant: TOYOBO CO., LTD.
Inventor： Kazuya Yoshimoto , Eri Higo , Masahiko Nakamori
Abstract: A flexographic printing plate obtained from a flexographic printing plate precursor includes at least a support, a photosensitive resin layer and a heat-sensitive mask layer laminated in this order, wherein the composite elastic modulus of each dot is 30 to 80 Mpa and the composite elastic modulus of each solid-printed part is 5 to 15 MPa. A photosensitive resin composition constituting the photosensitive resin layer includes a polymer prepared by polymerizing a conjugated diene, an ethylenically unsaturated compound and a photopolymerization initiator, wherein the content of the photopolymerization initiator is 2 to 9% by mass, the ethylenically unsaturated compound includes a (meth)acrylate compound having a number average molecular weight of 100 to 600 in a content of 5 to 16% by mass, and the ratio of the mass of the photopolymerization initiator and the mass of the compound is within the range of 0.20 to 0.55.
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Patent Agency Ranking
公开(公告)号：US11020999B2
公开(公告)日：2021-06-01
申请号：US16637088
申请日：2018-08-03
Applicant: TOYOBO CO., LTD.
Inventor： Kazuya Yoshimoto
Abstract: A photosensitive resin composition contains (i) modified partially-saponified polyvinyl acetate having a functional group introduced into a side chain thereof, (ii) tertiary nitrogen atom-containing polyamide, (iii) a photopolymerizable unsaturated compound and (iv) a photopolymerization initiator, characterized in that the above (ii) tertiary nitrogen atom-containing polyamide contains 20 to 50% by mol of a structural unit obtained from cyclohexane-dicarboxylic acid and 50 to 95% by mol of an alicyclic structural unit in total, in relation to a total of an amount of an aminocarboxylic acid unit (including a case wherein lactam is a raw material), an amount of a dicarboxylic acid unit and an amount of a diamine unit in the polyamide molecule. There is also provided a relief printing original plate which is characterized in having, on a support, a photosensitive resin layer formed by using this photosensitive resin composition.
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7.发明申请公开(公告)号：US20200247169A1
公开(公告)日：2020-08-06
申请号：US16637088
申请日：2018-08-03
Applicant: TOYOBO CO., LTD.
Inventor： Kazuya Yoshimoto
Abstract: A photosensitive resin composition contains (i) modified partially-saponified polyvinyl acetate having a functional group introduced into a side chain thereof, (ii) tertiary nitrogen atom-containing polyamide, (iii) a photopolymerizable unsaturated compound and (iv) a photopolymerization initiator, characterized in that the above (ii) tertiary nitrogen atom-containing polyamide contains 20 to 50% by mol of a structural unit obtained from cyclohexane-dicarboxylic acid and 50 to 95% by mol of an alicyclic structural unit in total, in relation to a total of an amount of an aminocarboxylic acid unit (including a case wherein lactam is a raw material), an amount of a dicarboxylic acid unit and an amount of a diamine unit in the polyamide molecule. There is also provided a relief printing original plate which is characterized in having, on a support, a photosensitive resin layer formed by using this photosensitive resin composition.
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公开(公告)号：US20150336371A1
公开(公告)日：2015-11-26
申请号：US14762022
申请日：2014-03-24
Applicant: TOYOBO CO., LTD.
Inventor： Yukimi Yawata , Daiki Yoshioka , Kazuya Yoshimoto
Abstract: The present invention provides a method for producing a flexographic printing plate which has an ability to prevent plate surface contamination and a persistency of the effect thereof and which allows a high-quality printing in a large scale. There is disclosed a method for producing a flexographic printing plate from a flexographic printing original plate provided with a photosensitive resin layer comprising a photosensitive resin composition containing at least (A) a hydrophobic polymer comprising a water-dispersible latex, (B) a photopolymerizable compound and (C) a photopolymerization initiator, wherein the method comprises a main exposure step, a development step and a post-exposure step, characterized in that a treatment solution containing a first amino-modified silicone having an amine equivalent of 1000 g/mol or less and a second amino-modified silicone having an amine equivalent of 3000 g/mol or more in a mass ratio of from 2.5:1 to 1:6 is contacted with the whole surface of the flexographic printing plate.
Abstract translation: 本发明提供了一种柔性版印刷版的制造方法，其具有防止板表面污染和其效果的持续性的能力，并且能够大规模地进行高质量的印刷。 公开了一种柔性版印刷版的制造方法，该柔版印刷版具有感光性树脂层，该感光性树脂层含有至少含有（A）含有水分散性胶乳的疏水性聚合物的感光性树脂组合物，（B）光聚合性化合物 和（C）光聚合引发剂，其中所述方法包括主曝光步骤，显影步骤和曝光后步骤，其特征在于，含有胺当量为1000g / mol的第一氨基改性硅氧烷的处理溶液或 少量的第二氨基改性的硅氧烷，其质量比为2.5:1至1:6的胺当量为3000g / mol以上，与柔版印刷版的整个表面接触。
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公开(公告)号：US20220314680A1
公开(公告)日：2022-10-06
申请号：US17635582
申请日：2020-07-01
Applicant: TOYOBO CO., LTD.
Inventor： Kazuya Yoshimoto , Eri Higo , Masahiko Nakamori
Abstract: The present invention provides a flexographic printing plate in which the dot gain of fine dots in a fade-out part is reduced and printability is improved. A flexographic printing plate obtained from a flexographic printing plate precursor comprising at least a support (A), a photosensitive resin layer (B) and a heat-sensitive mask layer (C) which are laminated in this order, characterized in that, when dots each having a diameter of 16 μm are formed at 175 lpi on the printing plate, the dots do not buckle until a load of 0.2 N is applied thereto. Preferably, when dots each having a diameter of 16 μm are formed at 175 lpi on the printing plate, the shoulder angle of each dot is 105 to 125° and the dot depth is 70 to 85 μm.
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公开(公告)号：US11975556B2
公开(公告)日：2024-05-07
申请号：US17278872
申请日：2019-09-17
Applicant: TOYOBO CO., LTD.
Inventor： Kazuya Yoshimoto , Jun Hasuike
CPC classification number: B41N1/12 , G03F7/033 , G03F7/0757 , G03F7/095
Abstract: The present invention aims to provide a flexographic printing original plate which exhibits improved sustainability of the ability of preventing the plate surface from staining. According to the present invention, there is provided a water-developable flexographic printing original plate including at least a support and a photosensitive resin layer provided on the support, in which the photosensitive resin layer contains a water-dispersible latex, a photopolymerizable unsaturated compound, a photopolymerization initiator, and a silicone compound. When the water-dispersible latex is one or more latex rubbers selected from the group consisting of polybutadiene rubber and poly(nitrile-butadiene) rubber, the silicone compound is a silicone compound having an amino group in the molecule and has a refractive index of 1.44 to 1.60. When the water-dispersible latex is poly(styrene-butadiene) rubber, the silicone compound is a silicone compound having an amino group in the molecule and has a refractive index of 1.47 to 1.63.
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