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Patent Agency Ranking
1.发明公开公开(公告)号：US20240126173A1
公开(公告)日：2024-04-18
申请号：US18392245
申请日：2023-12-21
Applicant: FUJIFILM Corporation
Inventor： Kazuki WATANABE
Abstract: An object of the present invention is to provide a flexographic printing plate precursor in which reproducibility of microcells is improved in a case of being made into a flexographic printing plate, and durability of independent dots is improved, and a manufacturing method of a flexographic printing plate using the flexographic printing plate precursor. The flexographic printing plate precursor of the present invention includes, in the following order, an infrared ablation layer, a photosensitive resin layer, and a support, in which a content of a photopolymerization initiator contained in a surface layer region of the photosensitive resin layer from a surface on a side in contact with the infrared ablation layer up to 100 μm in a thickness direction is larger than a content of a photopolymerization initiator contained in a remainder region of the photosensitive resin layer, which is closer to the support side than the surface layer region.
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公开(公告)号：US20230333479A1
公开(公告)日：2023-10-19
申请号：US18337931
申请日：2023-06-20
Applicant: FUJIFILM Corporation
Inventor： Kazuki WATANABE
Abstract: An object of the present invention is to provide a laminate for forming an image with high sensitivity of the heat-sensitive image forming layer and excellent manufacturing suitability, and a manufacturing method of a flexographic printing plate using the same. The laminate for forming an image is a laminate for forming an image, which is for forming a mask used for manufacturing a flexographic printing plate, including, in the following order, a carrier sheet, a barrier layer, and a heat-sensitive image forming layer, in which the barrier layer contains a first infrared absorbing dye, the heat-sensitive image forming layer contains an ultraviolet absorber and a second infrared absorbing dye, both of the first infrared absorbing dye and the second infrared absorbing dye are a compound having an absorption at a wavelength of 1070 nm and having a mass absorption coefficient at the wavelength of 1070 nm of 50 L/(g·cm) or more, and both of the barrier layer and the heat-sensitive image forming layer contain a third infrared absorbing dye having an absorption at a wavelength of 830 nm.
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公开(公告)号：US20220118787A1
公开(公告)日：2022-04-21
申请号：US17560981
申请日：2021-12-23
Applicant: FUJIFILM Corporation
Inventor： Ichiro KOYAMA , Shunsuke YANAGI , Kazuki WATANABE
Abstract: Provided is an on-press development type lithographic printing plate precursor having a support and an image-recording layer on the support, in which the image-recording layer contains a compound A that has a partial structure satisfying Δd≥15.5 wherein δd is a value of a dispersion element in the Hansen solubility parameters, and a content of the partial structure satisfying Δd≥15.5 in the compound A is 50% by mass or more with respect to a total mass of the compound. Also provided is a method of preparing lithographic printing plate or a lithographic printing method using the lithographic printing plate precursor.
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4.发明公开公开(公告)号：US20230324800A1
公开(公告)日：2023-10-12
申请号：US18333933
申请日：2023-06-13
Applicant: FUJIFILM Corporation
Inventor： Kazuki WATANABE
Abstract: An object of the present invention is to provide a flexographic printing plate precursor in which a sensitivity of a heat-sensitive image forming layer is high and occurrence of white spots in a line drawing can be suppressed in a case of being used for a flexographic printing plate, and a manufacturing method of a flexographic printing plate using the same. The flexographic printing plate precursor of the present invention is a flexographic printing plate precursor including, in the following order, a support, a photosensitive resin layer, a barrier layer, and a heat-sensitive image forming layer, in which the barrier layer contains a first infrared absorbing dye, the heat-sensitive image forming layer contains an ultraviolet absorber and a second infrared absorbing dye, and in the barrier layer, a content of a compound having substantially no absorption in a wavelength range of 900 to 1200 nm and having an absorption in a wavelength range of 300 to 400 nm is 0% by mass or more and less than 0.1% by mass with respect to a mass of the barrier layer.
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公开(公告)号：US20230375926A1
公开(公告)日：2023-11-23
申请号：US18362585
申请日：2023-07-31
Applicant: FUJIFILM Corporation
Inventor： Kenji KANO , Masato SHIRAKAWA , Kazuki WATANABE
Abstract: An object of the present invention is to provide a flexographic printing plate precursor which exhibits excellent rear end ink receptivity and microcell reproducibility in a case of being used for a flexographic printing plate. The flexographic printing plate precursor of the present invention includes a support and a photosensitive layer disposed above the support, in which all of the following conditions A and B are satisfied.
Condition A: in a case where R=(Ef/Eb)×(t−0.6)/0.54, a value of R is 12 or more and 30 or less,
Condition B: Ef is 5,000 or more,
Here,
Eb is a back exposure amount (unit: mJ/square centimeter), and refers to an exposure amount at which a relief depth is 600 μm,
Ef is a main exposure amount (unit: mJ/square centimeter), and refers to an exposure amount at which a difference in height between an end part as a convex portion and a central part as a concave portion in a case of forming an image area consisting of a 200 μm convex thin line reaches 4 μm, and
t refers to a thickness of the flexographic printing plate precursor from a bottom surface of the support to a surface of the photosensitive layer.
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