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    • 51. 发明授权
    • Electrophotographic lithographic printing plate precursor
    • 电子照相平版印刷版前体
    • US5424155A
    • 1995-06-13
    • US983517
    • 1993-04-21
    • Takao NakayamaShigeyuki DanHidefumi Sera
    • Takao NakayamaShigeyuki DanHidefumi Sera
    • G03G5/14G03G5/10G03G13/28G03G15/28
    • G03G13/28G03G15/28G03G5/10
    • The present invention aims at, in an electrophotographic lithographic printing plate precursor, improving the construction and composition of back layers and in particular, preventing occurrence of printing scum by rubbing and increasing the number of prints until printing wrinkles occur. The feature of the present invention consists in an electrophotographic lithographic printing plate precursor comprising, at least, a photoconductive layer on one surface of a base and a back layer on the other surface thereof, in which the back layer comprises an outermost layer containing a hydrophilic high molecular material and an innerlayer having a Cobb's water absorbing capacity of at most 25 g/m.sup.2 (45 minute value).
    • PCT No.PCT / JP92 / 00815 Sec。 371日期:1993年4月21日 102(e)日期1993年4月21日PCT提交1992年6月26日PCT公布。 出版物WO93 / 00615 日本1993年1月7日。本发明的目的在于,在电子照相平版印刷版原版中,改善背层的结构和组成,特别是通过摩擦和增加打印数量直到印刷皱纹发生时产生印刷浮渣 。 本发明的特征在于电子照相平版印刷版原版,其至少包括在基底的一个表面上的光电导层和在另一个表面上的背层,其中背层包括含有亲水性的最外层 高分子材料和Cobb吸水能力至多为25g / m 2(45分钟值)的内层。
    • 54. 发明授权
    • Liquid removing method
    • 液体去除方法
    • US4611409A
    • 1986-09-16
    • US620583
    • 1984-06-14
    • Akira MinamiSho NakaoTakao Nakayama
    • Akira MinamiSho NakaoTakao Nakayama
    • F26B5/14
    • F26B5/14
    • A method for removing liquid from the surface of a plate-shaped material, for instance, as applied to removing surface treatment liquids from metal plates of photographic film. While the plate-shaped material is being conveyed, a larger part of the liquid is removed from its surface by a first liquid removing device having a solid scraping surface positioned adjacent the surface of the plate-shaped material. This first liquid removing device may be a scraper blade or a pair of rollers. Subsequently, liquid remaining on the surface of the plate-shaped material is removed by a second liquid removing device, specifically, an air knife. The air flow rate and air pressure used with the air knife are sufficiently low that there is no significant scattering of liquid from the surface of the plate-shaped material.
    • 一种用于从板状材料的表面除去液体的方法,例如用于从照相胶片的金属板除去表面处理液体。 当板状材料被输送时,通过第一液体去除装置从其表面去除较大部分的液体,该第一液体去除装置具有邻近板状材料的表面定位的固体刮削表面。 该第一液体移除装置可以是刮刀或一对辊。 随后,通过第二液体去除装置,特别是气刀来除去残留在板状材料表面上的液体。 与气刀一起使用的空气流量和空气压力足够低,使得液体从板状材料的表面没有显着的散射。
    • 55. 发明授权
    • Method for preparing a lithographic printing plate
    • 平版印刷版的制备方法
    • US4518668A
    • 1985-05-21
    • US478570
    • 1983-03-24
    • Takao Nakayama
    • Takao Nakayama
    • G03G13/26B41N1/14G03F1/00G03F7/00G03F7/09G03G13/28C25D11/34G03G13/00
    • G03F7/2018G03G13/28
    • A method for preparing a lithographic printing plate is disclosed. The method involves providing a light-sensitive material comprised of an electroconductive support having a hydrophilic surface. The surface has provided thereon a light-sensitive layer and a photo-conductive insulating layer which may be provided in that order or combined in a single layer. The material is imagewise exposed and then subjected to electrophotographic processing to form an electrostatic latent image on the photoconductive insulating layer. After exposure the electrostatic latent image is developed with developer particles which are opaque to the light to which the light-sensitive layer is sensitive in the presence of an electrode facing the photoconductive insulating layer. The development is carried out while applying a bias voltage between the electrode and the light-sensitive layer so that residual charge on the non-latent image areas appears zero. The exposed or unexposed areas of the light sensitive layer are then removed together with the photoconductive insulating layer. The method provides a lithographic printing plate which has high resolution without a printing stain.
    • 公开了一种制备平版印刷版的方法。 该方法包括提供由具有亲水表面的导电载体组成的感光材料。 表面上设置有可以依次设置的光敏层和光导体绝缘层,或者组合在单层中。 将材料成像曝光,然后进行电子照相处理以在光电导绝缘层上形成静电潜像。 曝光后,在面向光电导绝缘层的电极存在下,用感光层敏感的光不透明的显影剂颗粒显影静电潜像。 在电极和感光层之间施加偏置电压的同时进行显影,使得非潜像区域上的残留电荷为零。 然后将光敏层的曝光或未曝光区域与光电导绝缘层一起去除。 该方法提供了一种平版印刷版,其具有高分辨率而没有印刷污渍。
    • 60. 发明授权
    • Plate material placement apparatus and method
    • 板材放置装置及方法
    • US06474236B1
    • 2002-11-05
    • US09624774
    • 2000-07-25
    • Mutsumi NaniwaHidefumi SeraTakao Nakayama
    • Mutsumi NaniwaHidefumi SeraTakao Nakayama
    • B41F2706
    • B41F13/10B41F27/1206B41F27/1281G03F7/2055G03F9/00Y10T83/0586Y10T83/8828Y10T83/9418Y10T83/943
    • A plate making apparatus of a flexible plate material 13, 22 being placed on a plate cylinder 7 for executing planographic printing in multiple colors. The plate making apparatus has a cutter 23 being placed between a storage section 21 of a roll-like plate material and an exposure section 25 for cutting the roll-like plate material like a sheet and punch means 30 for making plate cylinder engagement holes 14a and 14b in the left and right margins of the plate material along the transport direction thereof, the plate cylinder engagement holes to be engaged in protrusions 7a an 7b disposed in the circumferential direction of the left and right margins of the plate cylinder. Accordingly, it is possible to provide a plate making apparatus which reliably holds a plate material on a plate cylinder for enabling planographic printing and can use a roll-like plate material.
    • 柔性板材13,22的制版装置放置在印版滚筒7上,用于执行多种颜色的平版印刷。 制版装置具有切割器23,其被放置在卷状板材料的存储部分21和用于切割片状的卷状板材的曝光部分25和用于制造印版滚筒接合孔14a和 14b在板材沿其输送方向的左右边缘处,印版滚筒接合孔被接合在印版滚筒的左右边缘的圆周方向上设置的突起7a,7b中。 因此,可以提供一种将板材可靠地保持在印版滚筒上以实现平版印刷并能够使用卷状板材的制版装置。