Printed matter, printed matter inspection device, manufacturing method of printed matter, and manufacturing device of printed matter
AssigneeKabushiki Kaisha Toshiba
InventorsTakahisa Nakano, Fumitoshi Morimoto, Takeo Miki, Shota Kure, Nobuki Nemoto
Life of this patent
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Abstract
A printed matter includes: a first sub image embedded in the main image which has the same color as a color of the main image in a human visual sense, and is printed with an ink to absorb light of an infrared wavelength band by a first absorption coefficient; and a second sub image embedded in the main image which has the same color as the color of the main image in a human visual sense, and is printed with an ink to absorb the light of the infrared wavelength band by a second absorption coefficient.
Claims24
In a printed matter in which a main image is printed on a base material, the printed matter, comprising:
- a first sub image embedded in the main image which has the same color as a color of the main image in a human visual sense, and is printed with an ink to absorb light of an infrared wavelength band by a first absorption coefficient;
- and
- a second sub image embedded in the main image which has the same color as the color of the main image in a human visual sense, and is printed with an ink to absorb the light of the infrared wavelength band by a second absorption coefficient.
In a printed matter inspection device to inspect authenticity of a printed matter, the printed matter inspection device, comprising:
- an image reading section which irradiates the printed matter with infrared light, and reads out an image from a reflected light of the infrared light reflected from the printed matter;
- a signal processing section which obtains the image with a brightness between a predetermined first threshold value and a second threshold value lower than the first threshold value as a first sub image, and obtains the image which is darker than the second threshold value as a second sub image;
- and
- a determination section to determine the authenticity of the printed matter, based on a comparison result between a predetermined first reference image and the first sub image, and a comparison result between a predetermined second reference image and the second sub image.
A printed matter, comprising:
- a base material;
- a main image formed on the base material;
- and
- a first sub image embedded in the main image;
- wherein the main image and the first sub image are the same color in a human visual sense, and reflection coefficients thereof to light of an infrared wavelength band are different to each other.
A printed matter, comprising:
- a base material;
- a first image having a void portion formed on the base material to absorb infrared ray;
- and
- a second image formed within the void portion to reflect infrared ray.
A manufacturing method of a printed matter, comprising:
- a process to prepare a support on which an ink image receiving layer is formed, and to form a first image including a void portion which absorbs infrared ray, on the ink image receiving layer;
- and
- a process to form a second image to reflect infrared ray within the void portion.
A manufacturing device of a printed matter, comprising:
- an image forming section to form a first image including a void portion to absorb infrared ray, and a second image to reflect infrared ray within the void portion, on an ink image receiving layer formed on a support;
- and
- a thermal transfer section provided at a subsequent stage of the image forming section, to thermally transfer the ink image receiving layer on a base material through the first image and the second image.
Dependencies are inferred from the claim text.