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    MULTI-OPTICAL-COLOR OPTICALLY VARIABLE PRINTING APPARATUS AND PRINTING METHOD THEREOF
    2.
    发明公开
    MULTI-OPTICAL-COLOR OPTICALLY VARIABLE PRINTING APPARATUS AND PRINTING METHOD THEREOF 审中-实审

    公开(公告)号：EP4371772A1

    公开(公告)日：2024-05-22

    申请号：EP21949980.3

    申请日：2021-11-17

    申请人： China Banknote Security Printing Technology Research Institute Co., Ltd ,  China Banknote Printing and Minting Corp.

    发明人： LI, Fangjian ,  PAN, Pinli ,  GUO, Lisha ,  MA, Jian ,  QU, Yuan ,  CHEN, Xudong

    IPC分类号： B41F11/02 ,  B41M3/06

    摘要： Disclosed in the present application is a multi-optical-color optically variable printing apparatus. The multi-optical-color optically variable printing apparatus comprises a conveying portion, a silk-screen printing unit, a first optical-color optically variable pattern forming unit, a second optical-color optically variable pattern forming unit and a transmission system, wherein the conveying portion is used for conveying a base material to be printed; the silk-screen printing unit is in the next procedure of the conveying portion, and is used for imprinting ink or varnish onto said base material that is conveyed by the conveying portion, so as to form a semi-finished product; the first optical-color optically variable pattern forming unit is in the next procedure of the silk-screen printing unit, and is used for forming a first optical-color optically variable pattern on a first region of the semi-finished product; and the second optical-color optically variable pattern forming unit is in the next procedure of the first optical-color optically variable pattern forming unit, and is used for forming a second optical-color optically variable pattern on a second region of the semi-finished product. By means of the present application, for the same silk-screen printing pattern, multi-optical-color optically variable technology with a plurality of effects can be realized, and the stitching of a plurality of effect patterns can also be realized.