The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 28, 2017
Filed:
May. 13, 2015
Toppan Printing Co., Ltd., Taito-ku, Tokyo, JP;
Hidetaka Ide, Tokyo, JP;
TOPPAN PRINTING CO., LTD., Tokyo, JP;
Abstract
Provided are diffraction structure transfer foil that further improves usefulness of the diffraction structure transfer foil in authenticity determination by allowing a greater variety of diffracted-light patterns to be observed, and a forgery prevention medium using the diffraction structure transfer foil. The diffraction structure transfer foil () includes a transfer foil substrate (), a peeling-off protective layer () that is laminated on one surface of the transfer foil substrate (), a laminated body for diffracted-light delivery () that is laminated on the peeling-off protective layer (), and an adhesive layer () that is laminated on the laminated body for diffracted-light delivery (). The laminated body for diffracted-light delivery () includes a diffraction structure forming body in which a plurality of diffraction structures (and) are formed, and a reflective layer (or) that is formed in accordance with each of the plurality of diffraction structures (and). A transmission density of one reflective layer () of the plurality of reflective layers (and) is in a range of 0.01 to 0.9, and a transmission density of the other reflective layer () is 1.0 or greater.