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    MANUFACTURE OF LITHOGRAPHIC PRINTING ORIGINAL PLATE
    13.
    发明专利
    MANUFACTURE OF LITHOGRAPHIC PRINTING ORIGINAL PLATE 失效

    公开(公告)号：JPS55124148A

    公开(公告)日：1980-09-25

    申请号：JP2986879

    申请日：1979-03-16

    Applicant: TORAY INDUSTRIES

    Inventor： KOBAYASHI MASAHARU

    IPC: G03F7/40 ,  G03F7/00 ,  G03F7/075 ,  G03F7/09

    Abstract: PURPOSE:To obtain a lithographic printing original plate requiring no dampening water and having superior wear resistance, adherence to a support and printing properties by a single coating by coating the substrate with a silicone rubber solution or dispersion containing a photosensitive component and settling the component. CONSTITUTION:Flexible substrate 1 such as Al plate attachable to a printing machine is coated with a solution or dispersion containing a photosetting silicone rubber component, a photosensitive monomer or oligomer such as glycidyl methacrylate which has a small affinity for the rubber component and settles to be separated from the rubber layer or to form a region having a density gradient, a photosensitizer and a photopolymerization catalyst, and the coated layer is solidified by drying to form photosensitive layer 2 and silicone rubber layer 3 on substrate 1. By exposing the resulting photosensitive plate through original 4 the exposed portions of layers 3, 2 are photoset. The unexposed portion of layer 3 is then removed by development to form ink receptive image portion A, and ink repellent non-image portion B is left.

    BLADE FOR REMOVING HICKEY
    15.
    发明专利
    BLADE FOR REMOVING HICKEY 失效

    公开(公告)号：JPS5544847A

    公开(公告)日：1980-03-29

    申请号：JP11863078

    申请日：1978-09-28

    Applicant: TORAY INDUSTRIES

    Inventor： IKEDA NORIMASA ,  SASASHITA KATSUTOSHI ,  KOBAYASHI MASAHARU

    IPC: B41F35/02

    Abstract: PURPOSE:To provide a hickey removing blade made of a silicone rubber for lithography which is excellent in the atmospheric corrosion resistance, chemical resistant properties, form retaining properties along with a greater efficiency of removing dirt in the printing process. CONSTITUTION:A support device 2 is provided with a blade with a Shore A hardness of 10-90, preferably 20-60, in which a rubber 6 used for the core is coated with a silicone rubber 7 having multiple units each as given by the formula (R and R' represent an alkyl, aryl and cyano alkyl of C1-10. Vinyl, phenyl, halogenated vinyl, halogenated phenyl and halogenated alkyl account for less than 40% of the total and methyl having n of more than 2 more than 60%).

    INK ROLLER FOR DRY LITHOGRAPHIC PRINTING
    20.
    发明专利
    INK ROLLER FOR DRY LITHOGRAPHIC PRINTING 失效

    公开(公告)号：JPS5549295A

    公开(公告)日：1980-04-09

    申请号：JP12301478

    申请日：1978-10-05

    Applicant: TORAY INDUSTRIES

    Inventor： TOMIO KATSUJI ,  KOBAYASHI MASAHARU ,  SHIMOKAWA YOUICHI

    IPC: B05C1/08 ,  B41F31/26 ,  B41N7/00

    Abstract: PURPOSE:To prevent non-picture parts from being stained in dry lithographic printing, by specifying rubber hardness for an ink roller. CONSTITUTION:A material of rubber hardness more than 50 is used for an ink roller in contact with a printing plate. Natural rubber, nitrile rubber, butyl rubber, etc. are suitable for use. But, if their rubber hardness is above 50, epoxy and polyacetal resin, stainless steel and copper may be used.

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