Title:
PRODUCTION METHOD OF METAL PARTICLE
Document Type and Number:
Japanese Patent JP2015163737
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a production method for obtaining metal particles having high durability and excellent designing property to be used as taggant particles.SOLUTION: An example of the production method of metal particles includes: a rugged pattern formation step of forming a rugged pattern 9 on a surface of a sacrificial layer 25 containing an alkali-soluble resin on a substrate 23; a metal rugged layer formation step of forming a metal rugged layer 27 on the sacrificial layer; a metal layer formation step of forming a metal layer 29 on the metal rugged layer; a resist layer formation step of forming a resist layer 31 containing an alkali-soluble resin and having a predetermined pattern on the metal layer; a metal particle formation step of etching the metal rugged layer and the metal layer to form metal particles 1a, 1b; and a peeling step of removing the sacrificial layer and the resist layer by use of an alkaline developer, so as to peel the metal particles from the substrate 23.
Inventors:
YAMAMOTO MANABU
KITAMURA MITSURU
YAMAUCHI TAKESHI
KITAMURA AKIKO
OZAWA YOKO
KITAMURA MITSURU
YAMAUCHI TAKESHI
KITAMURA AKIKO
OZAWA YOKO
Application Number:
JP2015052350A
Publication Date:
September 10, 2015
Filing Date:
March 16, 2015
Export Citation:
Assignee:
DAINIPPON PRINTING CO LTD
International Classes:
C25D1/00; B22F9/04; C23F1/00; C23F1/02
Domestic Patent References:
| JP2012121170A | 2012-06-28 | |||
| JP2007247067A | 2007-09-27 | |||
| JP2002256474A | 2002-09-11 | |||
| JP2002230512A | 2002-08-16 | |||
| JP2011157596A | 2011-08-18 |
Attorney, Agent or Firm:
Seiichi Inoue