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Title:
PIGMENT FLAKE AND IMAGE FORMATION BODY USING THE SAME, AND PRODUCTION METHOD OF THE IMAGE FORMATION BODY
Document Type and Number:
Japanese Patent JP2014047284
Kind Code:
A
Abstract:

To provide a magnetic pigment flakes having a special visual effect, and to provide an image formation body that shines in rainbow using the same and has a special visual effect that draws a line to a conventional OVD image, and in which a forgery prevention effect is high.

A pigment flake comprises disposing: a convexoconcave pattern formation layer including two or more concavities or salients aligned in a one-dimensional or two-dimensional manner or both; and a light reflectivity coating layer that is coated so as to track the convexoconcave pattern, in at least one layer, and a length of a pattern cycle of the convexoconcave pattern formation layer is at most a wave length of visible light in a near ultraviolet region, a ratio of depth or height to a length of a cycle is at least half of the cycle, at least one layer comprises having a magnetic property, a magnetic field is applied, thereby orientation is performed along a line of the magnetic field.


Inventors:
KOBAYASHI HIROTAKU
Application Number:
JP2012191530A
Publication Date:
March 17, 2014
Filing Date:
August 31, 2012
Export Citation:
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Assignee:
TOPPAN PRINTING CO LTD
International Classes:
C09C3/06; B42D25/29; B42D25/30; B42D25/328; C09D11/00; G02B5/32
Domestic Patent References:
JP2005538233A2005-12-15
JP2009538937A2009-11-12
JP2011033935A2011-02-17
JP2009265563A2009-11-12
JP2010196008A2010-09-09
JP2005513207A2005-05-12
JP2006507381A2006-03-02
JP2013500177A2013-01-07
Foreign References:
US6902807B12005-06-07
KR005037002B1
US20080259455A12008-10-23
EP1862827A12007-12-05
WO2005072790A12005-08-11
US20040151827A12004-08-05
EP1537182A22005-06-08
CN1681898A2005-10-12
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda