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    Lithographic imaging with non-ablative wet printing members
    114.
    发明授权
    Lithographic imaging with non-ablative wet printing members 失效
    非烧蚀湿印刷构件的平版印刷成像

    公开(公告)号：US06374738B1

    公开(公告)日：2002-04-23

    申请号：US09564339

    申请日：2000-05-03

    Applicant: Thomas E. Lewis ,  Frederick R. Kearney ,  Eugene L. Langlais, II ,  Steven J. Frank

    Inventor： Thomas E. Lewis ,  Frederick R. Kearney ,  Eugene L. Langlais, II ,  Steven J. Frank

    IPC: B41C110

    CPC classification number: B41C1/1016 ,  B41C2201/04 ,  B41C2201/14 ,  B41C2210/02 ,  B41C2210/04 ,  B41C2210/08 ,  B41C2210/24

    Abstract: Lithographic imaging using non-ablative printing members combines the benefits of simple construction, the ability to utilize traditional metal base supports, and amenability to imaging with low-power lasers that need not impart ablation-inducing energy levels. A representative printing member has a topmost layer that is ink-receptive and does not significantly absorb imaging radiation, a second layer thereunder that is hydrophilic and does absorb imaging radiation, and a metal substrate under the second layer. The printing member is selectively exposed to laser radiation in an imagewise pattern, and laser energy passes substantially unabsorbed through the first layer and is absorbed by the second layer. Heat builds up in the second layer sufficiently to detach the first layer, which is formulated to resist reattachment. But the first layer and, more significantly, the third layer act to dissipate heat from the second layer to prevent its ablation. Where the printing member has received laser exposure—that is, where the first and second layers have been detached—remnants of the first layer are readily removed to produce a finished printing plate.

    Abstract translation: 使用非烧蚀印刷部件的平版印刷成像结合了简单结构的优点，利用传统金属基底支架的能力，以及使用不需要赋予消融诱导能量水平的低功率激光器成像的优点。 代表性的印刷部件具有吸收墨水且不显着吸收成像辐射的最顶层，其下面是亲水的并且吸收成像辐射的第二层，以及在第二层下面的金属基底。 打印构件以成像图案选择性地暴露于激光辐射，并且激光能量基本上未被吸收穿过第一层并被第二层吸收。 热量在第二层中积聚起来，足以分离第一层，其被配制成抵抗重新附着。 但是第一层，更重要的是第三层起第二层的作用，以消散第二层的热量，以防止其消融。 在印刷部件已经接收到激光曝光的情况下，也就是说，在第一层和第二层已经被分离的地方 - 第一层的残余物容易地被去除以产生成品印刷版。

    Lithographic printing plates for use with laser imaging apparatus
    115.
    发明授权
    Lithographic printing plates for use with laser imaging apparatus 有权
    用于激光成像设备的平版印刷版

    公开(公告)号：US06357352B1

    公开(公告)日：2002-03-19

    申请号：US09704858

    申请日：2000-11-02

    Applicant: Thomas P. Rorke ,  Richard J. D'Amato

    Inventor： Thomas P. Rorke ,  Richard J. D'Amato

    IPC: B41N114

    CPC classification number: B41C1/1033 ,  B41C1/1008 ,  B41C1/1016 ,  B41C2201/04 ,  B41C2201/14 ,  B41C2210/02 ,  B41C2210/08 ,  B41C2210/22 ,  B41C2210/24 ,  B41C2210/266

    Abstract: Provided is a lithographic printing plate comprising a support substrate having disposed thereon an ablative-absorbing layer and, optionally, a durable, ink-accepting surface layer that is not ablative-absorbing. The ablative-absorbing layer may contain a high weight per cent of an organic sulfonic acid component. The printing plate may further comprise a hydrophilic polymeric layer interposed between the ablative-absorbing layer and the substrate. The printing plate also comprises a primer layer underlying the ablative-absorbing layer with an adhesion-promoting agent, such as a zirconium compound, present in the primer layer. Also provided are methods of preparing such lithographic printing plates, and methods of preparing imaged lithographic printing plates from such lithographic printing plates by imagewise exposure to a laser and a subsequent cleaning step with water or with a cleaning solution.

    Abstract translation: 提供了一种平版印刷版，其包括在其上设置有消融吸收层的支撑基板和任选地不具有消融吸收性的耐用的受墨表面层。 烧蚀吸收层可以含有高重量百分比的有机磺酸组分。 印版还可以包括插入在消融吸收层和基底之间的亲水聚合物层。 印刷版还包含存在于底漆层中的消光吸收层下面的底漆层和具有粘合促进剂如锆化合物的底漆层。 还提供了制备这种平版印刷版的方法，以及通过成像曝光于激光从这种平版印刷版制备成像的平版印刷版的方法，以及随后用水或清洗溶液的清洗步骤。

    Heat sensitive printing plate precursors
    119.
    发明申请
    Heat sensitive printing plate precursors 失效
    热敏印版前体

    公开(公告)号：US20010018877A1

    公开(公告)日：2001-09-06

    申请号：US09730058

    申请日：2000-12-05

    Inventor： Tu Vinh Chau ,  Jacek Paul Obuchowicz

    IPC: B41F001/18 ,  B41F007/00 ,  B41N001/00 ,  B41N003/00

    CPC classification number: B41C1/1008 ,  B41C1/1016 ,  B41C2201/02 ,  B41C2201/04 ,  B41C2201/14 ,  B41C2210/04 ,  B41C2210/16 ,  B41C2210/24 ,  B41N3/00 ,  B41N3/034 ,  Y10S205/921

    Abstract: A lithographic printing plate precursor comprises an electrochemically grained aluminium substrate, the grained surface of which is coated with a layer of gel-like amorphous colloidal oxides and hydroxides of aluminium and their hydrates incorporating metallic aluminium and inter-metallic aluminium alloysnullgenerally at a level of below 5%nullthis layer being produced during the electrochemical graining process. The layer is typically present in an amount of from 0.1-20 g/m2 and at a layer thickness of 0.1-4.0 nullm, the particle sizes in the said layer generally falling in the range of from 10 to 2000nm. Methods are disclosed for the preparation of said precursors via the electrochemical graining of aluminium substrates. The invention provides lithographic printing plate precursors which may be imagewise exposed by means of a high intensity laser beam to provide printing plates showing high durability on press and giving images which show good resolution and are free from background staining.

    Abstract translation: 平版印刷版前体包括电化学细粒的铝基底，其粗糙表面涂有凝胶状无定形胶体氧化物层和铝氢氧化物及其水合物，其结合金属铝和金属间铝合金 - 通常在一定水平上 在电化学磨粒过程中产生的低于5％的层。 该层的存在量通常为0.1-20g / m 2，层厚为0.1-4.0μm，所述层中的颗粒尺寸通常在10-2000nm的范围内。 公开了通过铝基板的电化学砂磨制备所述前体的方法。 本发明提供平版印刷版前体，其可以通过高强度激光束成像曝光，以提供在印刷机上显示出高耐久性的印版，并给出显示出良好分辨率且不含背景染色的图像。

    Method and apparatus for non-ablative, heat-activated lithographic imaging
    120.
    发明授权
    Method and apparatus for non-ablative, heat-activated lithographic imaging 失效
    用于非烧蚀，热活化光刻成像的方法和装置

    公开(公告)号：US6107001A

    公开(公告)日：2000-08-22

    申请号：US851205

    申请日：1997-05-05

    Applicant: Thomas E. Lewis ,  Steven J. Frank

    Inventor： Thomas E. Lewis ,  Steven J. Frank

    IPC: B41C1/10 ,  B41N1/14 ,  G03F7/00 ,  B41N1/08

    CPC classification number: B41C1/1016 ,  B41C2201/04 ,  B41C2210/02 ,  B41C2210/08 ,  B41C2210/24

    Abstract: Methods and apparatus for lithographic imaging without ablation function by irreversibly debonding intermediate printing-plate layers, thereby rendering at least the surface layer removable by cleaning to expose, in an imagewise pattern, an underlying layer having a different affinity for ink and/or an abhesive fluid for ink. In contrast to ablation-type systems, it is unnecessary to destroy a plate layer, thereby reducing power requirements and facilitating increased imaging speeds.

    Abstract translation: 通过不可逆地剥离中间印版层来进行光刻成像的方法和设备，从而使得至少表面层可以通过清洁去除，以成像方式露出具有与墨水和/或粘合剂不同的亲和性的下层 墨水流体 与消融型系统相比，不需要破坏板层，从而降低功率需求并有助于提高成像速度。

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