公开(公告)号：US06641980B2

公开(公告)日：2003-11-04

申请号：US10187605

申请日：2002-07-03

Applicant: Hiroyuki Nagase ,  Kazuto Kunita

Inventor： Hiroyuki Nagase ,  Kazuto Kunita

IPC: G03F730

CPC classification number: G03F7/322 ,  G03F7/027

Abstract: A developer for a photopolymerizable presensitized plate for use in making a lithographic printing plate characterized in that it comprises an alkali silicate and a nonionic compound represented by the following general formula (I), it has a molar ratio: SiO2/M2O (wherein M represents an alkali metal or an ammonium group) ranging from 0.75 to 4.0, a pH value ranging from 11.5 to 12.8 and a conductivity ranging from 3 to 30 mS/cm: A—W  (I) wherein A represents a hydrophobic organic group whose logP as determined for A—H is not less than 1.5 and W represents a nonionic hydrophilic organic group whose logP as determined for W—H is less than 1.0; a method for preparing a lithographic printing plate comprising the steps of imagewise exposing, to light, a presensitized plate for use in making a lithographic printing plate, which comprises a substrate provided thereon with a photopolymerizable light-sensitive layer containing a compound having at least one addition-polymerizable ethylenically unsaturated double bond and a photopolymerization initiator; and then developing the exposed presensitized plate using the above developer. The developers and the method for making a lithographic printing plate according to the present invention can prevent scumming during printing and simultaneously attain sufficient printing durability without impairment of image-forming performance, and the developer can dissolve or disperse stably for a long period of time the compounds which are not soluble in the developer, and therefore the running performance of the developer can be excellent and stabilized.

Abstract translation: 一种用于制备平版印刷版的可光聚合预敏板的显影剂，其特征在于其包含碱式硅酸盐和由以下通式（I）表示的非离子化合物，其摩尔比为SiO 2 / M 2 O（其中M表示 碱金属或铵基），其pH值范围为11.5至12.8，电导率范围为3至30mS / cm：其中A表示疏水性有机基团，其对于AH确定的logP值不小于 W1表示非离子亲水性有机基团，其对于WH测定的logP小于1.0; 一种制备平版印刷版的方法，包括以下步骤：成像曝光用于制备平版印刷版的预敏化板，其包括在其上设置有可光聚合的感光层的基材，所述光致聚合感光层含有至少一种 可加成聚合的烯属不饱和双键和光聚合引发剂; 然后使用上述显影剂显影出曝光的敏化板。 根据本发明的显影剂和制造平版印刷版的方法可以防止印刷过程中的浮渣并同时获得足够的印刷耐久性而不损害图像形成性能，并且显影剂可以长时间稳定地溶解或分散 不溶于显影剂的化合物，因此显影剂的运行性能可以优异且稳定。

公开(公告)号：US5698372A

公开(公告)日：1997-12-16

申请号：US711073

申请日：1996-09-09

Applicant: Yasuo Okamoto ,  Syunichi Kondo ,  Hiroyuki Nagase

Inventor： Yasuo Okamoto ,  Syunichi Kondo ,  Hiroyuki Nagase

IPC: G03F7/004 ,  C09B67/20 ,  C09D4/00 ,  G03F7/00 ,  G03F7/027 ,  G03F7/033 ,  G03F7/105

CPC classification number: G03F7/033 ,  G03F7/027 ,  G03F7/105

Abstract: A photosensitive lithographic printing plate is described, which comprises a photopolymerizable composition containing at least the following components (i) to (iii): (i) a polymerizable compound having an addition-polymerizable unsaturated bond, (ii) a photopolymerization initiator, and (iii) a pigment dispersion, wherein the pigment dispersion is dispersed in the presence of a polymer having an aliphatic double bond in a main chain or a side chain thereof.

Abstract translation: 描述了一种光敏平版印刷版，其包含至少含有以下组分（i）至（iii）的光聚合组合物：（i）具有可加聚不饱和键的可聚合化合物，（ii）光聚合引发剂和（ iii）颜料分散体，其中所述颜料分散体在其主链或侧链中具有脂族双键的聚合物的存在下分散。