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Title:
IMAGE DISPLAY BODY HAVING DIFFRACTION GRATING PATTERN
Document Type and Number:
Japanese Patent JP2004302026
Kind Code:
A
Abstract:

To provide an image display body having a diffraction grating pattern, especially, to provide an image display body having a diffraction grating pattern, capable of improving the brightness of diffracted light and the visibility of an observation image by combining the diffraction grating pattern having a diffraction grating of a prescribed structure with a color image having prescribed light transmission characteristics and enhancing the diffraction efficiency in the diffraction grating pattern, and also, capable of improving decorative effects, strengthening the safety against counterfeiting and alteration, and capable of enhancing the decorativeness.

In the image display body having the diffraction grating pattern, at least one diffraction grating pattern constituted of a relief type diffraction grating is arranged, and also, a color image is formed on the diffraction grating pattern with transparent color ink capable of selectively transmitting light mainly having a wavelength for making the efficiency of the diffraction grating maximum.


Inventors:
WATANABE MANABU
TODA TOSHITAKA
Application Number:
JP2003093822A
Publication Date:
October 28, 2004
Filing Date:
March 31, 2003
Export Citation:
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Assignee:
TOPPAN PRINTING CO LTD
International Classes:
G02B5/18; G09F19/12; (IPC1-7): G02B5/18; G09F19/12
Domestic Patent References:
JPH0682612A1994-03-25
JPH08211821A1996-08-20
JPH06281804A1994-10-07
JPH11326618A1999-11-26
JPH06278396A1994-10-04