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    Lithographic imaging with non-ablative wet printing members
    201.
    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
    202.
    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。

    Negative-working heat-sensitive lithographic printing plate precursor
    207.
    发明申请
    Negative-working heat-sensitive lithographic printing plate precursor 失效
    负性热敏平版印刷版前体

    公开(公告)号：US20010031423A1

    公开(公告)日：2001-10-18

    申请号：US09742342

    申请日：2000-12-22

    Inventor： Nobuyuki Kita

    IPC: G03F007/11

    CPC classification number: B41C1/1016 ,  B41C2201/02 ,  B41C2201/14 ,  B41C2210/04 ,  B41C2210/06 ,  B41C2210/22 ,  B41C2210/24 ,  B41C2210/262 ,  G03F7/038 ,  Y10S430/145 ,  Y10S430/146

    Abstract: A negative-working heat-sensitive lithographic printing plate precursor, comprising a substrate having a water-receptive surface which has provided thereon suquentially: (1) a thermal cross-linking layer comprising an aqueous alkali-soluble resin having aromatic hydroxyl groups, a cross-linking agent capable of cross-linking the resin by heating in the presence of an acid catalyst and an acid generator; and (2) a water-soluble overcoat layer; wherein at least one layer of the overcoat layer and the thermal cross-linking layer comprise a compound capable of converting light into heat.

    Abstract translation: 一种负性热敏平版印刷版原版，其特征在于，包括具有接受表面的基材，其上提供了：（1）热交联层，其包含具有芳族羟基的碱溶性树脂水溶液， 能够通过在酸催化剂和酸发生剂的存在下加热而交联树脂的连接剂; 和（2）水溶性外涂层; 其中所述外涂层和所述热交联层的至少一层包含能够将光转化成热的化合物。

    Heat sensitive printing plate precursors
    209.
    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。

    Lithographic printing plate precursor
    210.
    发明申请
    Lithographic printing plate precursor 有权
    平版印刷版前体

    公开(公告)号：US20010018159A1

    公开(公告)日：2001-08-30

    申请号：US09756789

    申请日：2001-01-10

    Inventor： Kazuo Maemoto

    IPC: G03F007/038 ,  G03F007/26

    CPC classification number: B41N3/038 ,  B41C1/1008 ,  B41C1/1016 ,  B41C1/1025 ,  B41C2201/02 ,  B41C2201/12 ,  B41C2201/14 ,  B41C2210/04 ,  B41C2210/08 ,  B41C2210/20 ,  B41C2210/22 ,  B41C2210/24

    Abstract: A lithographic printing plate precursor is disclosed, comprising a hydrophilic support having thereon a heat-sensitive layer containing either a microcapsule containing a compound having a functional group capable of reacting by heat or a fine particulate polymer, wherein (1) when the heat-sensitive layer contains a fine particulate polymer, the fine particulate polymer may be a fine particulate polymer capable of combining or incapable of combining by heat used for the image formation and the fine particulate polymer has a functional group capable of reacting with a functional group present in another fine particulate polymer or with a functional group present in another component in the heat-sensitive layer; or (2) when the heat-sensitive layer contains a microcapsule containing a compound having a functional group capable of reacting by heat, the microcapsule may be a microcapsule having an outer wall capable of rupturing or incapable of rupturing by heat used for the image formation and a light-to-heat converting material is contained in the heat-sensitive layer or in a layer adjacent thereto.

    Abstract translation: 公开了一种平版印刷版原版，其中具有亲水性载体，其上具有包含含有能够通过加热反应的官能团的化合物的微胶囊或细颗粒聚合物的热敏层，其中（1）当热敏 层包含细颗粒聚合物，细颗粒聚合物可以是能够组合或不能用于图像形成的热组合的细颗粒聚合物，并且细颗粒聚合物具有能够与另一个中存在的官能团反应的官能团 细颗粒聚合物或在热敏层中存在于另一组分中的官能团; 或（2）当热敏层含有含有能够通过加热反应的官能团的化合物的微胶囊时，微胶囊可以是具有外壁能够破裂或不能用于图像形成的热破裂的微胶囊 并且在热敏层或与其相邻的层中包含光热转换材料。

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