Title:
METHOD FOR PREPARING LARGE-AREA STRUCTURAL CHROMOGENIC PATTERN BY MEANS OF INK-JET PRINTING AND ANTI-COUNTERFEITING METHOD BASED ON STRUCTURAL COLOR CHANGE
Document Type and Number:
WIPO Patent Application WO/2018/166465
Kind Code:
A1
Abstract:
A method for preparing a large-area structural chromogenic pattern by means of ink-jet printing, a structural chromogenic pattern obtained by means of the method, and an anti-counterfeiting method based on a structural color change. A dispersion liquid containing mono-disperse colloidal micro-spheres with high index of refraction is printed onto a piece of paper by means of an ink-jet printer, and nano-microspheres are arranged and assembled on the paper to obtain a micro-structure having the features of being ordered from a short distance and disordered from a long distance. A pretty structural color can be observed by means of the interaction of the structure with light, thereby displaying a pattern, changing the angle of observation, changing the brightness of the structural color, and hiding and displaying the pattern. The method is simple and convenient, is widely applicable, and can achieve the preparation and anti-counterfeiting of a large-area structural color without the need for external stimulation.
Inventors:
WU SULI (CN)
CHANG JIE (CN)
LIU BAOQI (CN)
ZHANG SHUFEN (CN)
CHANG JIE (CN)
LIU BAOQI (CN)
ZHANG SHUFEN (CN)
Application Number:
PCT/CN2018/078942
Publication Date:
September 20, 2018
Filing Date:
March 14, 2018
Export Citation:
Assignee:
UNIV DALIAN TECH (CN)
International Classes:
B41M5/00; C09D11/30; C09D11/32; C09D11/38
Foreign References:
| CN106891634A | 2017-06-27 | |||
| CN105017863A | 2015-11-04 | |||
| CN104044380A | 2014-09-17 | |||
| CN103788770A | 2014-05-14 | |||
| EP2204349A1 | 2010-07-07 |
Attorney, Agent or Firm:
DALIAN EAST PATENT AGENT LTD. (CN)
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