IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0582102
(2000-06-22)
|
우선권정보 |
FR-98 13307 (1998-10-23) |
국제출원번호 |
PCT/FR99/02573
(1999-10-22)
|
국제공개번호 |
WO00/24587
(2000-05-04)
|
발명자
/ 주소 |
- Fran.cedilla.ois Trantoul FR
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
146 인용 특허 :
3 |
초록
▼
A process for producing any photoluminescent printed polychromatic image (8), and the image obtained thereby. At least one set of at least three monochromatic filtered images (6a, 6b, 6c) is prepared from any original polychromatic image (1) visible in visible light which is filtered with a spectral
A process for producing any photoluminescent printed polychromatic image (8), and the image obtained thereby. At least one set of at least three monochromatic filtered images (6a, 6b, 6c) is prepared from any original polychromatic image (1) visible in visible light which is filtered with a spectral pass-band below or equal to 15 nm, according to at least three wavelengths of fundamental colors equal to the wavelengths of the luminescent pigments used, with the corresponding monochromatic filtered images (6a, 6b, 6c), in order to print separately, one above the other, three monochromatic printed images (8a, 8b, 8c). The invention concerns the image obtained, a protective device and a document carrying such an image.
대표청구항
▼
1. In a process for producing a photoluminescent printed polychromatic image (8) invisible under illumination in visible light and visible under illumination by at least one source (14) of invisible light, comprising:choosing or producing by subtractive synthesis an original polychromatic image (1),
1. In a process for producing a photoluminescent printed polychromatic image (8) invisible under illumination in visible light and visible under illumination by at least one source (14) of invisible light, comprising:choosing or producing by subtractive synthesis an original polychromatic image (1), visible in visible light, producing and recording at least one set of at least three images, known as filtered images (6a, 6b, 6c), by filtering the original image (1), printing separately one after the other and one above the other at least one set of at least three images, known as printed images (8a, 8b, 8c), by using and reproducing respectively one of the filtered images (6a, 6b, 6c), with a printing composition containing a photoluminescent pigment, the different photoluminescent pigments of the different printed images of the same set emitting, under illumination by at least one source (14) of invisible light, colors capable of forming all the colors of the visible spectrum by additive synthesis; the improvement comprising: producing filtered images, known as monochromatic filtered images (6a, 6b, 6c), by filtering the original image (1) in a spectral pass-band lower than or equal to 15 nm centred on a wavelength, known as the filtering wavelength, chosen from the wavelengths of at least three fundamental colors, the different filtering wavelengths of the monochromatic filtered images being distinct in pairs and being such as to enable all the colors of the visible spectrum to be formed by additive synthesis, each of these filtering wavelengths being at least approximately equal to a wavelength of an emission peak of a photoluminescent pigment under illumination by at least one source (14) of invisible light, and printing each printed image, known as the monochromatic printed image (8a, 8b, 8c), by using and reproducing one of the monochromatic filtered images (6a, 6b, 6c) with a printing composition containing a photoluminescent pigment having an emission peak wavelength under illumination by at least one source (14) of invisible light, which is at least approximately equal to the filtering wavelength used for obtaining the said monochromatic filtered image (6a, 6b, 6c).
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