68.
    发明专利
    未知

    公开(公告)号:DE2810309A1

    公开(公告)日:1978-10-26

    申请号:DE2810309

    申请日:1978-03-09

    Abstract: A method for preparing aluminum based lithographic printing plates which comprises coating at least one surface of an aluminum base sheet with a potassium zirconium fluoride solution, thereafter treating the coated, aluminum plate with a stratum of a sodium silicate solution and then applying to said surface a lithographically suitable light sensitive composition to yield the desired photosensitive lithographic printing plate of improved characteristics.

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