公开(公告)号：US09688090B2

公开(公告)日：2017-06-27

申请号：US14432794

申请日：2013-10-02

Applicant: NHK SPRING CO., LTD.

Inventor： Hidekazu Hoshino ,  Itsuo Takeuchi ,  Tokio Sakauchi ,  Tooru Ida ,  Shinei Suzuki

IPC: B42D25/47 ,  B42D25/29 ,  B42D25/328 ,  B42D25/364 ,  G03H1/02 ,  G09F3/03 ,  G03H1/00 ,  G09F3/00 ,  B42D25/00 ,  G02B5/32

CPC classification number: B42D25/47 ,  B42D25/00 ,  B42D25/29 ,  B42D25/328 ,  B42D25/351 ,  B42D25/364 ,  G02B5/32 ,  G03H1/0011 ,  G03H1/0256 ,  G09F3/0291 ,  G09F3/0292 ,  G09F3/0294 ,  G09F3/03 ,  G09F3/0376

Abstract: An identification medium can be used in an opening label, clearly show signs of it having been opened, and also have a superior authenticity-confirming function. The identification medium has a structure including, in the following order as seen from the side of observation: an optical function layer that generates a color shift, a separation layer that is partially formed, a printed layer, and an adhesive layer, in which when an adhesive strength between the adhesive layer and an adherend is set to be Xa, an adhesive strength between the adhesive layer and the printed layer is set to be Xb, and an adhesive strength at a portion in which the separation layer is laminated between the optical function layer and the printed layer is set to be Xc, the adhesive strength of each part is set to satisfy Xa>Xb>Xc or Xb>Xa>Xc.