IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
UP-0895841
(2007-08-28)
|
등록번호 |
US-7829162
(2010-11-25)
|
발명자
/ 주소 |
- Eskra, Jennifer
- Geddes, Pamela A.
- Harrison, Daniel J.
- Jalbert, Claire A.
- Marginean, Barry L.
- Przybylo, John
|
출원인 / 주소 |
- international imagining materials, inc
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
17 인용 특허 :
301 |
초록
▼
A thermal transfer printing medium that contains a thermal transfer layer which contains a first taggant and colorant, wherein: the first taggant comprises a fluorescent compound with an excitation wavelength selected from the group consisting of wavelengths of less than 400 nanometers, wavelengths
A thermal transfer printing medium that contains a thermal transfer layer which contains a first taggant and colorant, wherein: the first taggant comprises a fluorescent compound with an excitation wavelength selected from the group consisting of wavelengths of less than 400 nanometers, wavelengths of greater than 700 nanometers. When the thermal transfer layer is printed onto a white polyester substrate with a gloss of at least about 84, a surface smoothness Rz value of 1.2, and a reflective color represented by a chromaticity (a) of 1.91 and (b) of −6.79 and a lightness (L) of 95.63, when expressed by the CIE Lab color coordinate system, and when such printing utilizes a printing speed of 2.5 centimeters per second and a printing energy of 3.2 joules per square centimeter, a printed substrate with certain properties is produced. The printed substrate has a reflective color represented by a chromaticity (a) of from −15 to 15 and (b) from −18 to 18, and the printed substrate has a lightness (L) of less than about 35, when expressed by the CIE Lab color coordinate system. When the printed substrate is illuminated with light source that excites the first taggant with an excitation wavelength selected from the group consisting of wavelengths of less than 400 nanometers, wavelengths greater than 700 nanometers, the printed substrate produces a light fluorescence with a wavelength of from about 300 to about 700 nanometers.
대표청구항
▼
We claim: 1. A thermal transfer printing medium comprised of a thermal transfer layer, wherein: (a) said thermal transfer layer is comprised of a first colorant and a first taggant, wherein said first taggant comprises a fluorescent compound with a first excitation wavelength, and wherein said firs
We claim: 1. A thermal transfer printing medium comprised of a thermal transfer layer, wherein: (a) said thermal transfer layer is comprised of a first colorant and a first taggant, wherein said first taggant comprises a fluorescent compound with a first excitation wavelength, and wherein said first excitation wavelength is selected from the group consisting of wavelengths of less than 400 nanometers, wavelengths of greater than 700 nanometers, and mixtures thereof; (b) said thermal transfer layer has a light transmittance of at least about 10 percent when illuminated by light having said first excitation wavelength of said first taggant; (c) when said thermal transfer layer is printed onto a white polyester substrate with a gloss of at least about 84, a surface smoothness Rz value of 1.2, and a reflective color represented by a chromaticity (a) of 1.91 and (b) of −6.79 and a lightness (L) of 95.63, when expressed by the CIE Lab color coordinate system, and when such printing utilizes a printing speed of 2.5 centimeters per second and a printing energy of 3.2 joules per square centimeter, a printed substrate is produced wherein: 1. said printed substrate has a reflective color represented by a chromaticity (a) of from −15 to 15 and (b) from −18 to 18, and said printed substrate has a lightness (L) of less than about 35, when expressed by the CIE Lab color coordinate system; and 2. when said printed substrate is illuminated with light source that excites said first taggant with said first excitation wavelength, said printed substrate produces a light fluorescence with a wavelength in the range of from about 300 to about 700 nanometers. 2. The thermal transfer medium as recited in claim 1, wherein said first taggant is an oxysulfide phosphor. 3. The thermal transfer medium as recited in claim 1, wherein said thermal transfer layer is comprised of said first colorant and a second colorant. 4. The thermal transfer medium as recited in claim 3, wherein said thermal transfer layer has a thickness of less than about 15 microns. 5. The thermal transfer medium as recited in claim 3, wherein said thermal transfer layer has a thickness of less than about 10 microns. 6. The thermal transfer medium as recited in claim 3, wherein said thermal transfer layer has a thickness of less than about 5 microns. 7. The thermal transfer medium as recited in claim 5, wherein the absorbance of light at said first excitation wavelength by each of said first colorant and said second colorant in said thermal transfer layer is low enough such that said thermal transfer layer has a light transmittance of at least about 20 percent. 8. The thermal transfer medium as recited in claim 5, wherein the absorbance of light at said first excitation wavelength by each of said first colorant and said second colorant in said thermal transfer layer is low enough such that said thermal transfer layer has a light transmittance of at least about 30 percent. 9. The thermal transfer layer as recited in claim 7, wherein said thermal transfer layer is comprised of less than about 5 weight percent of carbon black. 10. The thermal transfer layer as recited in claim 7, wherein said thermal transfer layer is comprised of less than about 1 weight percent of carbon black. 11. The thermal transfer layer as recited in claim 7, wherein at least about 90 weight percent of said first taggant is comprised of particles smaller than 15 microns. 12. The thermal transfer medium as recited in claim 11, wherein said first colorant is a pigment. 13. The thermal transfer medium as recited in claim 11, wherein said first colorant is a color-shifting pigment. 14. The thermal transfer medium as recited in claim 11, wherein said first colorant is a dye. 15. The thermal transfer medium as recited in claim 11, wherein said thermal transfer medium is comprised of said thermal transfer layer, a flexible support disposed beneath said thermal transfer layer, and a transferable undercoating layer disposed between said flexible support and said thermal transfer layer. 16. The thermal transfer medium as recited in claim 15, wherein said undercoating layer is comprised of said second taggant, and wherein said second taggant is comprised of a fluorescent substance with has an emission wavelength that differs by at least 50 nanometers from the emission wavelength of said first taggant. 17. The thermal transfer medium as recited in claim 15, wherein said first taggant is an up-shifting phosphor. 18. The thermal transfer medium as recited in claim 17, wherein said first colorant is a pigment. 19. The thermal transfer medium as recited in claim 17, wherein said transferable undercoat layer is comprised of a second taggant. 20. The thermal transfer medium as recited in claim 19, wherein said second taggant is a photochromic substance. 21. The thermal transfer medium as recited in claim 19, wherein said second taggant is a thermochromic substance. 22. The thermal transfer medium as recited in claim 19, wherein said second taggant is a chemochromic substance. 23. The thermal transfer medium as recited in claim 19, wherein said second taggant is a mechanochromic substance.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.