Method of making a negative-working lithographic printing plate
    112.
    发明申请
    Method of making a negative-working lithographic printing plate 有权
    制造负性平版印刷版的方法

    公开(公告)号:US20060073418A1

    公开(公告)日:2006-04-06

    申请号:US11239534

    申请日:2005-09-29

    Abstract: A method for preparing a negative-working lithographic printing plate is provided which comprises the steps of (1) providing a lithographic printing plate precursor comprising on a grained and anodized aluminum support, having a hydrophilic surface, a coating comprising (i) polymer particles which are core-shell particles having a hydrophobic heat-softenable core and a hydrophilic shell and (ii) an infrared light absorbing agent, (2) exposing said coating to heat, thereby inducing coalescence of said polymer particles at exposed areas of said coating, and (iii) developing said precursor by applying a gum solution to said coating, thereby removing non-exposed areas of said coating from said support. According to the above method the printing plates exhibit after ageing an improved clean-out and a reduced background stain, resulting in toning-free printing.

    Abstract translation: 提供了制备负性平版印刷版的方法,其包括以下步骤:(1)提供平版印刷版前体,其包含在具有亲水表面的颗粒和阳极氧化的铝载体上,涂层包含(i)聚合物颗粒, 是具有疏水性可热软化芯和亲水壳的核 - 壳颗粒和(ii)红外光吸收剂,(2)使所述涂层曝光加热,从而在所述涂层的暴露区域诱导所述聚合物颗粒的聚结,以及 (iii)通过将胶溶液施加到所述涂层来显影所述前体,从而从所述载体除去所述涂层的未曝光区域。 根据上述方法,印版在老化后显示出改善的清洁和减少的背景污点,导致无色调打印。

    Planographic printing plate precursor
    114.
    发明申请
    Planographic printing plate precursor 有权
    平版印刷版前体

    公开(公告)号:US20060068321A1

    公开(公告)日:2006-03-30

    申请号:US11231850

    申请日:2005-09-22

    Inventor: Akira Nagashima

    Abstract: The present invention provides a planographic printing plate precursor including a support and a positive recording layer formed on the support and containing: (A) a polymer having a structural unit represented by the following general formula (1), (B) a photo-thermal converting agent, and (C) an amino compound having a methylol group or an alkoxymethyl group; and a positive recording layer whose solubility in an alkaline developer is improved by exposure to light or by heating. In general formula (1), R1 represents an alkyl group or a cyclic group, x represents 0 or 1, and A represents a bivalent bonding group. According to the invention, a positive planographic printing plate precursor for use with infrared lasers having excellent chemical resistance and wide image development latitude can be obtained.

    Abstract translation: 本发明提供了一种平版印刷版原版,其包括形成在载体上的载体和正性记录层,并含有:(A)具有由以下通式(1)表示的结构单元的聚合物,(B)光热 转化剂,(C)具有羟甲基或烷氧基甲基的氨基化合物; 以及通过曝光或加热改善了在碱性显影剂中的溶解度的正性记录层。

    Radiation-sensitive elements and their storage stability
    116.
    发明申请
    Radiation-sensitive elements and their storage stability 有权
    辐射敏感元件及其储存稳定性

    公开(公告)号:US20060051699A1

    公开(公告)日:2006-03-09

    申请号:US10536514

    申请日:2003-11-28

    Abstract: Radiation-sensitive element comprising (a) a substrate with at least one hydrophilic surface and (b) a radiation-sensitive coating on at least one hydrophilic surface of the substrate, wherein the coating comprises: (i) at least one free-radical polymerizable monomer and/or oligomer and/or polymer with at least one ethylenically unsaturated group each, (ii) at least one absorber selected from photoinitiators and sensitizers, which is capable of absorbing radiation of a wavelength in the range of 250 to 1,200 nm and (iii) at least one stabilizer comprising in its molecule at least one group capable of inhibiting free-radical polymerization, and at least one other group capable of sorption at the hydrophilic surface of the substrate.

    Abstract translation: 辐射敏感元件包括(a)具有至少一个亲水表面的基底和(b)基底的至少一个亲水表面上的辐射敏感涂层,其中所述涂层包括:(i)至少一种可自由基聚合的 具有至少一个烯键式不饱和基团的单体和/或低聚物和/或聚合物,(ii)至少一种选自光引发剂和敏化剂的吸收剂,其能够吸收波长在250-1200nm范围内的辐射和( iii)至少一种稳定剂在其分子中包含至少一个能够抑制自由基聚合的基团,以及至少一种能够在基材亲水表面吸附的其它基团。

    On-press developable lithographic printing plate precursor
    118.
    发明授权
    On-press developable lithographic printing plate precursor 失效
    印刷机上可印刷的平版印刷版前体

    公开(公告)号:US06969575B2

    公开(公告)日:2005-11-29

    申请号:US10647428

    申请日:2003-08-26

    Applicant: Toshifumi Inno

    Inventor: Toshifumi Inno

    Abstract: An on-press developable heat-sensitive lithographic printing plate precursor comprising: a support having a water-wettable surface; and an image forming layer, wherein the image forming layer comprises microcapsules containing a lipophilic compound and one of a leuco dye which forms a color by an action of an acid and a dye which reduces the maximum absorption intensity in a visible region by an action of an acid, an acid generator capable of generating an acid on heat application, and a light-heat converting substance.

    Abstract translation: 一种可印刷的可印刷的热敏平版印刷版原版,包括:具有可润湿表面的载体; 和图像形成层,其中所述图像形成层包含含有亲脂性化合物的微胶囊和通过酸和染料形成颜色的无色染料之一,所述无色染料通过下述作用降低可见光区域中的最大吸收强度 能够在加热时产生酸的酸,酸发生剂和光热转换物质。

    Directly imageable waterless planographic printing plate precursor
    120.
    发明授权
    Directly imageable waterless planographic printing plate precursor 有权
    直接成像无水平版印刷版前体

    公开(公告)号:US06964841B2

    公开(公告)日:2005-11-15

    申请号:US10372769

    申请日:2003-02-26

    Abstract: The invention is a directly imageable waterless planographic printing plate precursor comprising: at least a heat insulating layer, a heat sensitive layer, and an ink repellent layer that are provided in that order on a substrate, wherein a transmittance of the heat insulating layer for a light having a wavelength within a range of 400 to 650 nm is at most 15% over the entire range of the wavelength. The invention provides a directly imageable waterless planographic printing plate precursor that allows measurement of the dot area ratio on the printing plate with a densitometer or the like.

    Abstract translation: 本发明是一种可直接成像的无水平版印刷版原版,其特征在于,至少具有在基板上依次设置的绝热层,感热层和拒油墨层,其中,绝热层 波长在400至650nm范围内的光在波长的整个范围内至多为15%。 本发明提供一种可直接成像的无水平版印刷版原版,其允许用密度计等测量印版上的点面积比。

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