High molecular weight binders for laser ablative imaging
    1.
    发明公开
    High molecular weight binders for laser ablative imaging 失效
    Bindemittel mit hohem Molekulargewichtfürdie Laserablativabbildung。

    公开(公告)号:EP0636494A1

    公开(公告)日:1995-02-01

    申请号:EP94110809.4

    申请日:1994-07-12

    IPC分类号: B41M5/24 B41M5/40

    摘要: A process of forming a single color, dye ablation image having an improved D-min comprising imagewise-heating by means of a laser, a dye-ablative recording element comprising a support having thereon a dye layer comprising an image dye dispersed in a polymeric binder having an infrared-absorbing material associated therewith, the laser exposure taking place through the dye side of the element, and removing the ablated image dye material to obtain an image in the dye-ablative recording element, wherein the polymeric binder has a polystyrene equivalent molecular weight of at least 100,000 as measured by size exclusion chromatography.

    摘要翻译: 该方法包括:(i)提供染料消融记录元件,其包含支撑物(优选透明的),该载体具有设置在聚合物粘合剂(1)中的染料层,并与其相关联的IR吸收材料(2);(ii) 使用激光曝光通过元件的染料侧成像加热该元件; 和(iii)去除烧蚀的图像染料以在元件上留下图像。 新颖的是(1)具有聚苯乙烯当量。 mol.wt. 至少为100,000,通过尺寸排阻色谱法测量。 县。 a(1)是可分解的,包含纤维素衍生物, 硝酸纤维素或包含聚苯乙烯,并且以0.1-5g / m 2使用,(2)在染料层中,并且是优选的。 一种染料

    Method for preparation of an imaging element
    4.
    发明公开
    Method for preparation of an imaging element 失效
    维尔法赫恩·赫斯特伦

    公开(公告)号:EP0745490A2

    公开(公告)日:1996-12-04

    申请号:EP96201481.7

    申请日:1996-05-28

    IPC分类号: B41M5/38 B41M5/40

    摘要: Imaging elements are prepared by a method in which an image is generated on a donor element and then transferred from the donor element to a receiver element by the steps of lamination and peeling. The donor element comprises a support, an image-forming layer and optional release and adhesive layers and the image is formed by imagewise laser-induced thermal ablation of the image-forming layer. The method is particularly useful for the preparation of lithographic printing plates as it avoids the need to employ alkaline developing solutions.

    摘要翻译: 成像元件通过以下方法制备,其中在施主元件上产生图像,然后通过层压和剥离的步骤从施主元件转移到接收元件。 施主元件包括支撑体,图像形成层和任选的释放和粘合剂层,并且图像通过图像激光诱导的图像形成层的热消融形成。 该方法对于制备平版印刷版特别有用,因为它避免了使用碱性显影溶液的需要。