Methods and compositions for imaging and cleaning lithographic printing plates
    1.
    发明授权
    Methods and compositions for imaging and cleaning lithographic printing plates 失效
    用于成像和清洁平版印刷版的方法和组合物

    公开(公告)号:US06358671B1

    公开(公告)日:2002-03-19

    申请号:US08715559

    申请日:1996-09-18

    IPC分类号: B41N108

    CPC分类号: B41C1/1033

    摘要: Cleaning compositions for ablation-type lithographic printing plates include solvent, non-solvent and lubricating components, the vapor pressures and concentrations of the various components being chosen such that the mixture never becomes too rich in solvent. In this way, the solvent's effect is directed primarily at thermal byproducts, which, because they are exposed and already partly decomposed, are more vulnerable to solvent action than the intact, anchored plate constituents in unimaged regions. The compositions are used in conjunction with mechanical rubbing of the plate surface following imaging.

    摘要翻译: 用于消融型平版印刷版的清洁组合物包括溶剂,非溶剂和润滑组分,选择各种组分的蒸气压和浓度使得混合物从不变得太溶于溶剂。 以这种方式,溶剂的作用主要在于热副产物,因为它们被暴露并已经部分分解,所以与非成像区域中完整的,锚定的板组分相比,易于溶解作用。 组合物与成像后的板表面的机械摩擦结合使用。

    Lithographic imaging with metal-based, non-ablative wet printing members
    2.
    发明授权
    Lithographic imaging with metal-based, non-ablative wet printing members 失效
    平版印刷成像与金属,非烧蚀湿印刷成员

    公开(公告)号:US06378432B1

    公开(公告)日:2002-04-30

    申请号:US09564898

    申请日:2000-05-03

    申请人: Thomas E. Lewis

    发明人: Thomas E. Lewis

    IPC分类号: B41C110

    摘要: 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 hydrophilic metal substrate and, thereover, first and second layers. The first layer has a thickness and an exposure surface and comprises a material that absorbs imaging radiation. The second layer overlies the first layer and is oleophilic and substantially transparent to imaging radiation. Exposure to imaging radiation causes the first layer and the substrate to irreversibly detach without substantial ablation, thereby facilitating removal, by subjection to the cleaning liquid, of the first and second layers where detachment has taken place.

    摘要翻译: 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亲水性金属基板,并且具有第一和第二层。 第一层具有厚度和曝光表面,并且包括吸收成像辐射的材料。 第二层覆盖第一层,并且是亲油的并且对成像辐射基本上是透明的。 暴露于成像辐射会导致第一层和衬底不可逆地分离而无需实质的消融,从而有助于通过置于清洁液体上去除已发生分离的第一层和第二层。

    Universal cable clamp having oval apertures
    4.
    发明授权
    Universal cable clamp having oval apertures 失效
    通用电缆夹具有椭圆形孔

    公开(公告)号:US06064009A

    公开(公告)日:2000-05-16

    申请号:US920879

    申请日:1997-08-29

    摘要: A universal cable clamp for coupling a wide variety of electrical cables to an electrical box is capable of accepting metal or non-metallic sheathed cables. The cable clamp includes upper and lower clamping plates and a front wall having at least one opening for receiving the cable. The upper and lower clamping plates are coupled together by bendable coupling arms. A fastener extends through the upper and lower clamping plates and into the electrical box to deform the bendable coupling arms while the cable is clamped between the upper and lower clamping plates. The opening in the front wall in embodiments is oval-shaped and is dimensioned to allow a non-metallic sheathed cable to pass through, while preventing the metal sheath of a metal sheathed cable from passing through. The clamp provides a grounding connection of the metal cables and conduits. The cable clamp accommodates thick or thin steel and aluminum flex metal conduits, armored cable, metal clad cable and non-metallic cable.

    摘要翻译: 用于将各种电缆连接到电气箱的通用电缆夹可以接受金属或非金属护套电缆。 电缆夹具包括上夹板和下夹板以及具有至少一个用于容纳缆线的开口的前壁。 上下夹板通过可弯曲的联接臂联接在一起。 紧固件延伸穿过上下夹板并进入电箱中,以使电缆夹紧在上下夹板之间使可弯曲的联接臂变形。 实施例中的前壁中的开口是椭圆形的,并且其尺寸被设计成允许非金属护套电缆穿过,同时防止金属护套电缆的金属护套穿过。 夹具提供金属电缆和导管的接地连接。 电缆夹可容纳厚或薄的钢和铝柔性金属导管,铠装电缆,金属包层电缆和非金属电缆。

    Seamless offset lithographic printing members for use with
laser-discharge imaging apparatus
    5.
    发明授权
    Seamless offset lithographic printing members for use with laser-discharge imaging apparatus 失效
    用于激光放电成像设备的无缝胶印平版印刷部件

    公开(公告)号:US5634403A

    公开(公告)日:1997-06-03

    申请号:US478380

    申请日:1995-06-07

    摘要: Seamless, sleeve-shaped dry and wet lithographic printing members that can be recycled after use are disclosed, along with methods for their manufacture and use. The members include a strong, durable, hollow cylinder or sleeve that is attached to the plate mandrel or cylinder jacket of an offset printing press or platemaking apparatus. Surrounding the sleeve is a layer of a material, preferably polymeric in nature, which is characterized by efficient, ablative absorption of laser radiation, as well as other layers that facilitate imaging and subsequent printing. A layer disposed beneath the ablatable layer reflects unabsorbed imaging radiation back into the ablatable layer.

    摘要翻译: 公开了可以在使用后再循环的无缝的袖子干和平版印刷构件,以及用于其制造和使用的方法。 这些构件包括坚固,耐用的中空圆柱体或套筒,其附接到胶版印刷机或制版设备的板心轴或圆筒套。 围绕套筒的是一层材料,其性质优选为聚合物,其特征在于激光辐射的有效,消融吸收以及便于成像和随后印刷的其它层。 设置在可烧蚀层下方的层将未吸收的成像辐射反射回到可烧蚀层中。

    Laser-imageable printing members and methods for wet lithographic
printing
    7.
    发明授权
    Laser-imageable printing members and methods for wet lithographic printing 失效
    激光成像印刷部件和湿法平版印刷的方法

    公开(公告)号:US5493971A

    公开(公告)日:1996-02-27

    申请号:US227002

    申请日:1994-04-13

    CPC分类号: B41C1/1033

    摘要: Lithographic printing constructions and methods of imaging them. The constructions include a grained-metal substrate, a protective layer that can also serve as an adhesion-promoting primer, and an ablatable oleophilic surface layer. In operation, imagewise pulses from an imaging laser interact with the surface layer, causing ablation thereof and, probably, inflicting some damage to the underlying protective layer as well. The imaged plate may then be subjected to a solvent that eliminates the exposed protective layer, but which does no damage either to the surface layer or to the unexposed protective layer lying thereunder.

    摘要翻译: 平版印刷结构及其成像方法。 这些结构包括晶粒金属基材,还可以用作粘合促进底漆的保护层和可消融的亲油表面层。 在操作中,来自成像激光器的成像脉冲与表面层相互作用,导致其消融,并且也可能对下面的保护层造成一些损害。 然后可以对成像的板进行消除暴露的保护层的溶剂,但是对于表面层或其下的未曝光保护层不会造成损伤。

    Plasma-jet imaging apparatus and method
    9.
    发明授权
    Plasma-jet imaging apparatus and method 失效
    等离子体喷射成像装置和方法

    公开(公告)号:US5272979A

    公开(公告)日:1993-12-28

    申请号:US859407

    申请日:1992-04-30

    IPC分类号: B41C1/10 B41C1/05

    CPC分类号: B41C1/1033

    摘要: A method of and apparatus for imaging a lithographic plate having a printing surface by exposing the printing surface to plasma jet discharges between the plate and a plasma jet nozzle spaced close to the printing surface of the plate. These plasma jet discharges are sufficient to ablate or otherwise transform one or more layers of the printing surface, thereby changing the affinity of the printing surface for ink and/or water at the points thereof exposed to the discharges so as to produce image spots on the plate.

    摘要翻译: 一种用于使具有印刷表面的平版印刷板成像的方法和装置,其通过将印刷表面暴露于板和等离子体喷嘴之间的等离子体喷射放电,所述等离子体喷嘴在板的印刷表面附近间隔开。 这些等离子体喷射放电足以消融或以其它方式转化印刷表面的一个或多个层,从而改变印刷表面对于在曝光于放电处的点处的油墨和/或水的亲和性,从而在 盘子。

    Plasma-jet imaging method
    10.
    发明授权
    Plasma-jet imaging method 失效
    等离子体射流成像方法

    公开(公告)号:US5062364A

    公开(公告)日:1991-11-05

    申请号:US554089

    申请日:1990-07-17

    IPC分类号: B41C1/10

    CPC分类号: B41C1/1033

    摘要: A method of imaging a lithographic plate having a printing surface comprises exposing the printing surface to plasma jet discharges between the plate and a plasma jet nozzle spaced close to the printing surface of the plate. These plasma jet discharges are sufficient to remove a layer or layers of the plate to thereby change the affinity of the printing surface for ink and/or water at the points thereof exposed to the discharges, thereby producing image spots on the plate.

    摘要翻译: 对具有印刷表面的平版印刷板进行成像的方法包括将印刷表面暴露于板和等离子体喷嘴之间的等离子体喷射放电,该等离子体喷嘴与板的印刷表面相邻。 这些等离子体喷射放电足以去除板的一层或多层,从而改变了在暴露于放电的点处的油墨和/或水的印刷表面的亲合力,从而在板上产生图像斑点。