Printing apparatus with image error correction and ink regulation control
    1.
    发明授权
    Printing apparatus with image error correction and ink regulation control 失效
    具有图像纠错和墨水调节控制的打印设备

    公开(公告)号:US5163368A

    公开(公告)日:1992-11-17

    申请号:US639254

    申请日:1991-01-09

    摘要: Printing apparatus has at least one print station including a blanket cylinder in rolling contact with an impression cylinder, a print cylinder for supporting a lithographic plate, the plate cylinder being in rolling contact with the blanket cylinder, at least one discharge source for applying an image to a plate supported by the plate cylinder, and a motor for moving the energy source relative to the plate cylinder so that when the plate cylinder is rotated, the discharge source scans a raster on the surface of the plate supported by the plate cylinder. The apparatus may be configured as an in-line or central-impression type press. A controller responsive to picture signals representing an original document repeatedly actuates each discharge source momentarily during the scan thereof so that the discharge source forms on the plate surface an image comprised of dots corresponding to the original document. The controller includes a dot-position look-up table for storing the x and y coordinates of substantially all dot positions on the plate and is arranged to actuate each energy source to form image dots at selected ones of the dot positions when said picture signals are present. The apparatus also includes provision for regulating the ink applied to the plate at each print station.

    摘要翻译: 打印装置具有至少一个打印站,该打印站包括与压印滚筒滚动接触的橡皮布滚筒,用于支撑平版印版的打印滚筒,印版滚筒与橡皮滚筒滚动接触,至少一个用于施加图像的排出源 到由印版滚筒支撑的板,以及用于相对于印版滚筒移动能量源的马达,使得当印版滚筒旋转时,排出源扫描由印版滚筒支撑的印版的表面上的光栅。 该装置可以被配置为直列式或中央印模型压机。 响应于表示原稿的图像信号的控制器在其扫描期间重复地启动每个放电源,使得放电源在板表面上形成由与原始文档相对应的点组成的图像。 控制器包括一个点位置查找表,用于存储板上基本上所有点位置的x和y坐标,并且被布置成当所述图像信号是所述点位置时,使得每个能量源在选定的点位置形成图像点 当下。 该设备还包括用于调节在每个印刷站处施加到印版的油墨的装置。

    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。