Patent US5478381A successfully refreshed from Google Patents.
US5478381A
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Ink composition
Assignee: Maxell Ltd
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Filing: 1994-10-05
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Granted: 1995-12-26
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Expires: 2014-10-05
Abstract
Abstract An ink composition containing an infrared ray-emitting fluorescent substance, at least one dispersant selected from the group consisting of alkylamines and phosphate salts, and a binder resin, which is excellent in light-emitting characteristics.
Inventors
- 👤 Tsunemi Ohiwa
- 👤 Yoshinori Yamamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:55
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/50
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
27 words
An ink composition comprising an infrared ray-emitting fluorescent substance, at least one dispersant selected from the group consisting of alkylamines and phosphate salts, and a binder resin.
Claim 2
Dependent Claim
27 words
An ink composition comprising an infrared ray-emitting fluorescent substance, at least one dispersant selected from the group consisting of alkylamines and phosphate salts, and a binder resin.
Claim 3
Dependent Claim
19 words
The ink composition according to claim 1, wherein said dispersant is an alkylamine having 12 to 18 carbon atoms.
Claim 4
Dependent Claim
14 words
The ink composition according to claim 1, wherein said dispersant is a methacryloyl phosphate.
Claim 5
Dependent Claim
82 words
The ink composition according to claim 1, wherein said infrared ray-emitting fluorescent substance is a substance of the formula: A.sub.1-x-y Nd.sub.x Yb.sub.y PO.sub.4 wherein A is at least one element selected from the group consisting of Al, Bi, B, In, Ga, Sc, Gd, Ce, Y, Lu and La, x is a number of 0 to 0.9, and y is a number of 0 to 0.9, provided that a sum of x and y is larger than 0 and not larger than 1.
Claim 6
Dependent Claim
94 words
The ink composition according to claim 1, wherein said infrared ray-emitting fluorescent substance is a substance of the formula: A.sub.2-p-q Nd.sub.p Yb.sub.q Ca.sub.5 (MoO.sub.4).sub.8 wherein A is at least one element selected from the group consisting of Al, Bi, B, In, Ga, Sc, Gd, Ce, Y, Lu and La, p is a number of 0 to 2, and q is a number of 0 to 2, provided that a sum of p and q is larger than 0 and not larger than 2, whereby the ink layer is excellent in the light emitting characteristics.
Claim 7
Dependent Claim
16 words
The ink composition according to claim 1, wherein said binder resin is a UV curable resin.
Claim 8
Dependent Claim
15 words
The ink composition according to claim 1, wherein said binder resin is a water-soluble resin.
Claim 9
Dependent Claim
33 words
The ink composition according to claim 1, which is used in an ink jet printer and in which a particle size of said infrared ray-emitting fluorescent substance is from 0.1 to 2 μm.
Claim 10
Dependent Claim
14 words
The ink composition according to claim 8, which further comprises an electrical conducting aid.
Claim 11
Dependent Claim
45 words
A printed material comprising a base material and an infrared ray-emitting layer printed on said base material from an ink composition comprising an infrared ray-emitting fluorescent substance, at least one dispersant selected from the group consisting of alkylamines and phosphate salts, and a binder resin.
Claim 12
Dependent Claim
45 words
A printed material comprising a base material and an infrared ray-emitting layer printed on said base material from an ink composition comprising an infrared ray-emitting fluorescent substance, at least one dispersant selected from the group consisting of alkylamines and phosphate salts, and a binder resin.
Claim 13
Dependent Claim
82 words
The printed material according to claim 10, wherein said infrared ray-emitting fluorescent substance is a substance of the formula: A.sub.1-x-y Nd.sub.x Yb.sub.y PO.sub.4 wherein A is at least one element selected from the group consisting of Al, Bi, B, In, Ga, Sc, Gd, Ce, Y, Lu and La, x is a number of 0 to 0.9, and y is a number of 0 to 0.9, provided that a sum of x and y is larger than 0 and not larger than 1.
Claim 14
Dependent Claim
94 words
The printed material according to claim 10, wherein said infrared ray-emitting fluorescent substance is a substance of the formula: A.sub.2-p-q Nd.sub.p Yb.sub.q Ca.sub.5 (MoO.sub.4).sub.8 wherein A is at least one element selected from the group consisting of Al, Bi, B, In, Ga, Sc, Gd, Ce, Y, Lu and La, p is a number of 0 to 2, and q is a number of 0 to 2, provided that a sum of p and q is larger than 0 and not larger than 2, whereby the ink layer is excellent in the light emitting characteristics.
Claim 15
Dependent Claim
16 words
The printed material according to claim 10, wherein said binder resin is a UV curable resin.
Claim 16
Dependent Claim
15 words
The printed material according to claim 10, wherein said binder resin is a water-soluble resin.
Claim 17
Dependent Claim
23 words
The printed material according to claim 10, wherein a particle size of said infrared ray-emitting fluorescent substance is from 0.1 to 2 μm.
Claim 18
Dependent Claim
18 words
The printed material according to claim 15, wherein said ink composition further comprises an electrical conductivity adjusting agent.
Claim 19
Independent Claim
161 words
A method for preparing an infrared ray-emitting fluorescent substance of the formula: A.sub.1-x-y Nd.sub.x Yb.sub.y PO.sub.4 wherein A is at least one element selected from the group consisting of Al, Bi, B, In, Ga, Sc, Gd, Ce, Y, Lu and La, x is a number of 0 to 0.9, and y is a number of 0 to 0.9, provided that a sum of x and y is larger than 0 and not larger than 1 comprising mixing orthophosphoric acid or a phosphate salt of the formula: M.sub.3-z H.sub.z PO.sub.4 wherein M is at least one metal element selected from the group consisting of alkali metals and alkaline earth metals and z is a number of 0 to less than 3 with a raw material powder containing a compound of at least one element selected from the group consisting of Nd and Yb, sintering the mixture, air cooling the mixture, and hydrothermally treating it at a temperature of 50° C. or higher.
Claim 20
Independent Claim
161 words
A method for preparing an infrared ray-emitting fluorescent substance of the formula: A.sub.1-x-y Nd.sub.x Yb.sub.y PO.sub.4 wherein A is at least one element selected from the group consisting of Al, Bi, B, In, Ga, Sc, Gd, Ce, Y, Lu and La, x is a number of 0 to 0.9, and y is a number of 0 to 0.9, provided that a sum of x and y is larger than 0 and not larger than 1 comprising mixing orthophosphoric acid or a phosphate salt of the formula: M.sub.3-z H.sub.z PO.sub.4 wherein M is at least one metal element selected from the group consisting of alkali metals and alkaline earth metals and z is a number of 0 to less than 3 with a raw material powder containing a compound of at least one element selected from the group consisting of Nd and Yb, sintering the mixture, air cooling the mixture, and hydrothermally treating it at a temperature of 50° C. or higher.
Claim 21
Dependent Claim
38 words
The method according to claim 17, wherein said raw material powder further contains a compound of at least one element selected from the group consisting of Al, Bi, B, In, Ga, Sc, Gd, Ce, Y, Lu and La.
Claim 22
Independent Claim
124 words
A method for preparing an infrared ray-emitting fluorescent substance of the formula: A.sub.2-p-q Nd.sub.p Yb.sub.q Ca.sub.5 (MoO.sub.4).sub.8 wherein A is at least one element selected from the group consisting of Al, Bi, B, In, Ga, Sc, Gd, Ce, Y, Lu and La, p is a number of 0 to 2, and q is a number of 0 to 2, provided that a sum of p and q is larger than 0 and not larger than 2 comprising mixing molybdenum oxide and calcium carbonate with a raw material powder containing a compound of at least one element selected from the group consisting of Nd and Yb, sintering the mixture, air cooling the mixture, and hydrothermally treating it at a temperature of 50° C. or higher.
Claim 23
Independent Claim
124 words
A method for preparing an infrared ray-emitting fluorescent substance of the formula: A.sub.2-p-q Nd.sub.p Yb.sub.q Ca.sub.5 (MoO.sub.4).sub.8 wherein A is at least one element selected from the group consisting of Al, Bi, B, In, Ga, Sc, Gd, Ce, Y, Lu and La, p is a number of 0 to 2, and q is a number of 0 to 2, provided that a sum of p and q is larger than 0 and not larger than 2 comprising mixing molybdenum oxide and calcium carbonate with a raw material powder containing a compound of at least one element selected from the group consisting of Nd and Yb, sintering the mixture, air cooling the mixture, and hydrothermally treating it at a temperature of 50° C. or higher.
Claim 24
Dependent Claim
38 words
The method according to claim 19, wherein said raw material powder further contains a compound of at least one element selected from the group consisting of Al, Bi, B, In, Ga, Sc, Gd, Ce, Y, Lu and La.
References Cited (Backward Citations)
JPS539600A
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JPS539607A
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JPS5422326A
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JPS6118231A
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US5286286A
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US5271764A
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1998-12-25 | 1999-06-26 | 1999-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-12-25 | 2003-06-26 | 2003-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-12-25 | 2007-06-26 | 2007-12-26 | $7700.00 | Window Closed / Lapsed |