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    Method of making planographic printing plate and planographic printing plate
    2.
    发明授权
    Method of making planographic printing plate and planographic printing plate 有权
    平版印刷版和平版印刷版的制作方法

    公开(公告)号：US09091926B2

    公开(公告)日：2015-07-28

    申请号：US13756538

    申请日：2013-02-01

    Applicant: FUJIFILM CORPORATION

    Inventor： Shigekatsu Fujii ,  Yuichi Yasuhara ,  Yoshinori Taguchi ,  Norio Aoshima

    IPC: G03F7/00 ,  G03F7/20 ,  B41C1/10 ,  B41N3/08 ,  G03F7/32 ,  B41N1/00

    CPC classification number: B41C1/1008 ,  B41C1/1016 ,  B41C2201/04 ,  B41C2201/06 ,  B41C2201/10 ,  B41C2201/14 ,  B41C2210/02 ,  B41C2210/06 ,  B41C2210/14 ,  B41C2210/22 ,  B41C2210/24 ,  B41C2210/26 ,  B41C2210/262 ,  B41C2210/266 ,  B41N3/08 ,  G03F7/322

    Abstract: A method of making a planographic printing plate includes exposing, to infrared light, a planographic printing plate precursor including a recording layer provided on a substrate, and developing the precursor using an aqueous alkaline solution. The recording layer comprises a copolymer containing a structural unit derived from (meth)acrylonitrile and at structural unit derived from styrene, a water-insoluble and alkali-soluble resin, and an infrared absorbing agent, the solubility of the recording layer in the aqueous alkaline solution being increased by the exposure. The aqueous alkaline solution has a pH of 8.5 to 10.8 and contains a betaine-based amphoteric surfactant and an ammonium salt represented by Formula (I): R1, R2, R3, and R4 each independently represent an alkyl or aryl group; the total number of carbon atoms in R1, R2, R3, and R4 is not more than 20; and X− represents a counter anion.

    Abstract translation: 制造平版印刷版的方法包括将包含设置在基材上的记录层的平版印刷版原版曝光于红外光，并使用碱性水溶液显影前体。 记录层包含含有衍生自（甲基）丙烯腈的结构单元和衍生自苯乙烯的结构单元，水不溶性和碱溶性树脂和红外吸收剂的共聚物，记录层在碱性水溶液中的溶解度 溶液通过曝光增加。 碱性水溶液的pH为8.5〜10.8，含有基于甜菜碱的两性表面活性剂和式（I）表示的铵盐：R1，R2，R3和R4各自独立地表示烷基或芳基; R1，R2，R3和R4中的碳原子总数不超过20; X表示抗衡阴离子。

    Positive type lithographic printing plate precursor, method of producing same, and method of preparing lithographic printing plate
    4.
    发明授权
    Positive type lithographic printing plate precursor, method of producing same, and method of preparing lithographic printing plate 有权

    公开(公告)号：US10649337B2

    公开(公告)日：2020-05-12

    申请号：US16351513

    申请日：2019-03-13

    Applicant: FUJIFILM CORPORATION

    Inventor： Takashi Sato ,  Rena Mukaiyama ,  Yuichi Yasuhara

    IPC: G03F7/30 ,  G03F7/033 ,  G03F7/035 ,  G03F7/095 ,  G03F7/032 ,  G03F7/11 ,  G03F7/00 ,  G03F7/004 ,  B41C1/10

    Abstract: Provided is a positive type lithographic printing plate precursor including at least: a support which has a hydrophilic surface or a hydrophilic layer; and an underlayer, an interlayer, and an upper layer on the support in this order, in which the underlayer contains a polymer compound 1 which has at least one structure selected from the group consisting of a urethane bond, an acetal structure, and a urea bond in a main chain, the interlayer contains a polymer compound 2 which has at least one structure selected from the group consisting of a sulfonamide group, an active imide group, and a urea bond in a side chain, the upper layer contains a polymer compound 3 which has a phenolic hydroxy group, and one or more layers among the underlayer, the interlayer, and the upper layer contain an infrared absorbent. Further, provided are a method of producing the positive type lithographic printing plate precursor and a method of preparing a lithographic printing plate using the positive type lithographic printing plate precursor.

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