公开(公告)号：EP1084863A1

公开(公告)日：2001-03-21

申请号：EP00902112.2

申请日：2000-02-07

申请人： Mitsubishi Heavy Industries, Ltd.

发明人： SUDA, Yasuharu, Mitsubishi Heavy Ind. Ltd.

IPC分类号： B41N1/14 ,  B41C1/10

CPC分类号： B41C1/1041 ,  B41N1/006

摘要： An object is to provide a printing plate material which can be adapted to digitization of the printing process and recycled and a method for renewing it. As the printing plate material, there can be used one which includes a substrate on the surface of which a coat layer containing a titanium oxide photocatalyst and at least one member selected from Fe 2+ , Ni 2+ , Mn 2+ , Cr 3+ , and Cu 2+ is formed. In an initial state of the printing plate as prepared, it is adjusted to a state where the surface of the coat layer is hydrophobic. This surface is irradiated with ultraviolet rays to convert a part of the surface to a hydrophilic surface. This conversion is performed based on digital data corresponding to an image to be printed. In this case, the hydrophobic portion is used as a printing image portion and the hydrophilic portion is used as a non-printing image portion. After completion of the printing, the compound is applied again to change the surface of the coat layer into the initial state of the printing plate as prepared, in which the surface of the coat layer exhibits hydrophobicity again.

摘要翻译： 本发明的目的是提供一种印刷版材料，其可适用于打印过程的数字化和再循环以及更新印刷方法。 作为印版材料，可以使用包括其表面上的基材的基材，其中含有氧化钛光催化剂的涂层和选自Fe 2+，Ni 2+，Mn 2+的至少一种 +>，Cr <3+>和Cu 2+。 在制备的印版的初始状态下，将其调整为涂层的表面是疏水性的状态。 用紫外线照射该表面以将表面的一部分转化为亲水表面。 基于与要打印的图像相对应的数字数据执行该转换。 在这种情况下，疏水部分用作打印图像部分，并且亲水部分用作非打印图像部分。 印刷完成后，再次施加化合物以将涂层的表面改变为制备的印刷版初始状态，其中涂层的表面再次显示出疏水性。