LASER MARKING METHOD
    93.
    发明公开
    LASER MARKING METHOD 审中-公开
    激光标记方法

    公开(公告)号:EP2392471A1

    公开(公告)日:2011-12-07

    申请号:EP10735795.6

    申请日:2010-01-26

    Abstract: This invention provides a laser marking method that can form a very minute mark of a predetermined shape, such as a letter or pattern, with clarity and high solidity, on the surface of a substrate. The laser marking method of the invention comprises the steps of (1) depositing a coloring material on the surface of a substrate of thermoplastic material to form a thin film of the coloring material, and (2) applying a laser beam to the thin film of the coloring material in conformity with a predetermined marking shape to cause the portions of the substrate irradiated with the laser beam to soften and to cause the thus softened portions to mix with the coloring material, thereby developing the predetermined marking shape on the surface of the substrate.

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