Dai Nippon Printing Co., Ltd.

Canon Kabushiki Kaisha

Yuko Aoyama

Jun Sato

Mitsuru Kitamura

Tsuyoshi Yamauchi

Toshio Yoshihara

Masato Okada

Katsuhito Yoshio

Fumiyasu Murakami

Toshihisa Yamakawa

Atsuhiro Sabashi

Daiki Katou

Takayuki Nakanishi

Yasuchika Hasegawa

Provided is an information recording object designed such that a read angle of embedded information is easily assessed. An information recording object, which comprises a combined image including an image Cand an image Cformed on the image C, is configured so that the image Cand the image Care different patterns generated according to specific rules and so that the reflected light quantities differ due to respective viewing angles, and the image Cand/or the image Ccan be recognized in the combined image in accordance with the viewing angle, and the combined image has an angle-specifying area formed using a material having the same reflected light quantity as the image C

Information recording object

The objective of the present invention is to provide an information recording body, a medium and a printed product having improved design properties. An information recording body provided with a superimposed image including a brilliant layer and a transparent layer formed on the brilliant layer is characterized in that: the brilliant layer is a chromatic color image formed from a brilliant material; the transparent layer is a regular pattern image formed from a transparent starting material; the transparent starting material is configured in such a way that an amount of light reflected therefrom differs depending on an observation angle; and the superimposed image is formed in such a way that the transparent layer is recognizable in accordance with a specific observation angle.

Information recording body, medium and printed product

There is provided a luminescent medium which requires difficult analysis of light emitted from a luminescent material of the medium. A luminescent medium includes a substrate, and a luminescent material comprising a first luminescent material which, when irradiated with visible light, infrared light or ultraviolet light, emits first infrared light 'a', and a second luminescent material which, when irradiated with visible light, infrared light or ultraviolet light, emits second infrared light 'b'. The first luminescent material is formed in a first planar area, and the second luminescent material is formed in a second planar area. The first planar area and the second planar area overlap each other, forming an overlapping planar area in which the luminescent materials each have a concentration gradation.

Luminescent medium and method for reading luminescent medium

To provide a light-emitting medium whereby different light-emitting forms can be realized that can easily be discriminated using a normal blacklight, and to provide a forgery prevention medium and a method for determining authenticity of the light-emitting medium. A light-emitting medium provided with a substrate and a first light-emitting region and a second light-emitting region disposed on both sides of the substrate, the substrate comprising a selective transmission region for transmitting non-visible light in a first wavelength region and essentially not transmitting non-visible light in a second wavelength region different from the first wavelength region, and the first light-emitting region and the second light-emitting region emitting light when irradiated by non-visible light in the first wavelength region and also emitting light when irradiated by non-visible light in the second wavelength region.

Light-emitting medium, forgery prevention medium, and method for determining authenticity of same

Provided are an information recording object and a reading device devised so that embedded information is difficult to guess. The information recording objectprovided with a combined image comprising an image Cprinted in a lustrous layerand an image Cformed on the image Cand printed in a transparent layeris characterized in that: the image Cand the image Care each printed with an ink for which the amount of reflected light differs according to viewing angle; for the combined image, one image is visible depending on the viewing angle; the image Cis an image in which there is a regularity in feature points in a spatial frequency domain F; and the image Cis an image in which the feature points in a spatial frequency domain Fare disposed at positions that block said regularity.

Information recording object and reading device

Display screen with level detecting icon

Growing community of inventors

Tokyo, Japan

Yuko Aoyama