US5880176A
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US
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Fluorescent marking composition and fluorescent mark formed by said composition
Assignee: Maxell Ltd
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Filing: 1995-10-20
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Granted: 1999-03-09
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Expires: 2015-10-20
Abstract
Abstract A fluorescent marking composition containing particles of an organic material which has a glass transition temperature of at least 30° C. and an average particle size of at least 30 nm, and emitting fluorescence in a visible light range, or absorbing infrared light having a wavelength of at least 700 nm and emitting a light in an infrared wavelength range, which composition is excellent in dispersion stability, light resistance, and heat and light resistance, and provides a mark which does not bleed.
Inventors
- 👤 Takanori Kamoto
- 👤 Yoshinori Yamamoto
- 👤 Toshinobu Sueyoshi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 00:17
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/50; Y; Y10; Y10S; Y10S260/00; Y10S260/38
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
99 words
A fluorescent marking composition for ink jet printing, comprising particles of an organic resin having a glass transition temperature of at least 30° C. and an average particle size of at least 30 nm, and a fluorescent dye emitting fluorescence in a visible light wavelength range that is present in an amount of 0.001 wt. % to 10 wt. %, based on the weight of the particles of the organic resin; and wherein the organic resin is selected from the group consisting of polymethacrylate, polyacrylate, polyvinyl chloride, benzoquanamine, alkyd, urea, vinyl chloride, vinyl acetate copolymer and aromatic sulfonamide resins.
Claim 2
Dependent Claim
99 words
A fluorescent marking composition for ink jet printing, comprising particles of an organic resin having a glass transition temperature of at least 30° C. and an average particle size of at least 30 nm, and a fluorescent dye emitting fluorescence in a visible light wavelength range that is present in an amount of 0.001 wt. % to 10 wt. %, based on the weight of the particles of the organic resin; and wherein the organic resin is selected from the group consisting of polymethacrylate, polyacrylate, polyvinyl chloride, benzoquanamine, alkyd, urea, vinyl chloride, vinyl acetate copolymer and aromatic sulfonamide resins.
Claim 3
Dependent Claim
14 words
The fluorescent marking composition according to claim 1, wherein said particles comprise hollow particles.
Claim 4
Dependent Claim
43 words
The fluorescent marking composition according to claim 1, which is used in an ink jet printer and in which a ratio of a viscosity of the composition (mPa.s) to a nozzle diameter of said ink jet printer (μm) is from 0.01 to 1.
Claim 5
Dependent Claim
17 words
The fluorescent marking composition according to claim 3, which has a Reynolds number of 10.5 to 2100.
Claim 6
Dependent Claim
17 words
The fluorescent marking composition according to claim 3, which has a Weber number of 38.2 to 3360.
Claim 7
Dependent Claim
31 words
The fluorescent marking composition according to claim 3, wherein a ratio of a viscosity of said composition (mPa.s) to a surface tension of said composition (mN/m) is from 0.03 to 1.0.
Claim 8
Dependent Claim
112 words
An infrared fluorescent marking composition for ink jet printing, comprising particles of an organic resin having a glass transition temperature of at least 30° C. and an average particle size of at least 30 nm, and an infrared fluorescent dye absorbing infrared light having a wavelength of at least 700 nm and emitting light in an infrared wavelength range that is present in an amount of 0.001 wt. % to 15 wt. %, based on the weight of the particles of the organic resin; and wherein the organic resin is selected from the group consisting of polymethacrylate, polyacrylate, polyvinyl chloride, benzoquanamine, alkyd, urea, vinyl chloride, vinyl acetate copolymer and aromatic sulfonamide resins.
Claim 9
Dependent Claim
112 words
An infrared fluorescent marking composition for ink jet printing, comprising particles of an organic resin having a glass transition temperature of at least 30° C. and an average particle size of at least 30 nm, and an infrared fluorescent dye absorbing infrared light having a wavelength of at least 700 nm and emitting light in an infrared wavelength range that is present in an amount of 0.001 wt. % to 15 wt. %, based on the weight of the particles of the organic resin; and wherein the organic resin is selected from the group consisting of polymethacrylate, polyacrylate, polyvinyl chloride, benzoquanamine, alkyd, urea, vinyl chloride, vinyl acetate copolymer and aromatic sulfonamide resins.
Claim 10
Dependent Claim
15 words
The infrared fluorescent marking composition according to claim 7, wherein said particles comprise hollow particles.
Claim 11
Dependent Claim
44 words
The infrared fluorescent marking composition according to claim 7, which is used in an ink jet printer and in which a ratio of a viscosity of the composition (mPa.s) to a nozzle diameter of said ink jet printer (μm) is from 0.01 to 1.
Claim 12
Dependent Claim
18 words
The infrared fluorescent marking composition accodeing to claim 9, which has a Reynolds number of 10.5 to 2100.
Claim 13
Dependent Claim
18 words
The infrared fluorescent marking composition according to claim 9, which has a Weber number of 38.2 to 3360.
Claim 14
Dependent Claim
32 words
The infrared fluorescent marking composition according to claim 9, wherein a ratio of a viscosity of said composition (mPa.s) to a surface tension of said composition (mN/m) is from 0.03 to 1.0.
Claim 15
Dependent Claim
93 words
A fluorescent mark comprising particles of an organic resin having a glass transition temperature of at least 30° C. and an average particle size of at least 30 nm, and a fluorescent dye emitting fluorescence in a visible light wavelength range that is present in an amount of 0.001 wt. % to 10 wt. %, based on the weight of the particles of the organic resin; wherein the organic resin is selected from the group consisting of polymethacrylate, polyacrylate, polyvinyl chloride, benzoquanamine, alkyd, urea, vinyl chloride, vinyl acetate copolymer and aromatic sulfonamide resins.
Claim 16
Dependent Claim
93 words
A fluorescent mark comprising particles of an organic resin having a glass transition temperature of at least 30° C. and an average particle size of at least 30 nm, and a fluorescent dye emitting fluorescence in a visible light wavelength range that is present in an amount of 0.001 wt. % to 10 wt. %, based on the weight of the particles of the organic resin; wherein the organic resin is selected from the group consisting of polymethacrylate, polyacrylate, polyvinyl chloride, benzoquanamine, alkyd, urea, vinyl chloride, vinyl acetate copolymer and aromatic sulfonamide resins.
Claim 17
Dependent Claim
13 words
The fluorescent mark according to claim 13, wherein said particles comprise hollow particles.
Claim 18
Dependent Claim
106 words
An infrared fluorescent mark comprising particles of an organic resin having a glass transition temperature of at least 30° C. and an average particle size of at least 30 nm, and an infrared dye absorbing infrared light having a wavelength of at least 700 nm and emitting light in an infrared wavelength range that is present in an amount of 0.001 wt % to 15 wt. %, based on the weight of the particles of the organic resin; and wherein the organic resin is selected from the group consisting of polymethacrylate, polyacrylate, polyvinyl chloride, benzoquanamine, alkyd, urea, vinyl chloride, vinyl acetate copolymer and aromatic sulfonamide resins.
Claim 19
Dependent Claim
106 words
An infrared fluorescent mark comprising particles of an organic resin having a glass transition temperature of at least 30° C. and an average particle size of at least 30 nm, and an infrared dye absorbing infrared light having a wavelength of at least 700 nm and emitting light in an infrared wavelength range that is present in an amount of 0.001 wt % to 15 wt. %, based on the weight of the particles of the organic resin; and wherein the organic resin is selected from the group consisting of polymethacrylate, polyacrylate, polyvinyl chloride, benzoquanamine, alkyd, urea, vinyl chloride, vinyl acetate copolymer and aromatic sulfonamide resins.
Claim 20
Dependent Claim
14 words
The infrared florescent mark according to claim 15, wherein said particles comprise hollow particles.
Claim 21
Dependent Claim
35 words
The infrared fluorescent mark according to claim 15, wherein a rise time from 10% to 90% of the maximum light emitting output is 10 μsec. or less, when infrared light is irradiated on said mark.
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