US5209515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solvent and/or pressure sensitive security document
Assignee: Standard Register Co
•
Filing: 1991-02-08
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Granted: 1993-05-11
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Expires: 2011-02-08
Abstract
Abstract A document is provided having a solvent sensitive and/or pressure sensitive ink printed thereon which reacts to the application of a solvent and/or pressure to form a visible stain or image. The ink includes a first composition of solvent soluble, water insoluble dye particles, a binder, and optionally, an opacifier. Alternatively, the first composition may be combined with a second composition which includes an encapsulated solvent and optionally a stilting material. The first and second compositions may be printed on the document in separate steps or printed together as a self-contained composition. The ink may be printed on the entire surface of the document or only on selected areas thereof.
Inventors
- 👤 Mark D. Dotson
- 👤 A. Dale Lakes
- 👤 William H. Mowry, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:42
CPC Classifications
B; B42; B42D; B42D25/00; B42D25/20; B42D25/29; B41; B41M; B41M3/00; B41M3/14; B41M3/142; B41M5/00; B41M5/124; B41M5/165; Y; Y10; Y10S; Y10S283/00; Y10S283/904; Y10S428/00; Y10S428/916
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
76 words
A solvent sensitive security document comprising a document substrate having a first and second major surfaces, at least one of said major surfaces having coated or printed thereon a composition comprising solvent soluble, water insoluble dye particles having a diameter of between about 0.3-50 μm, and a binder, said dye particles solubilizing when contacted with a solvent to form a colored visible stain or image on said substrate to indicate an attempted alteration of said document.
Claim 2
Dependent Claim
76 words
A solvent sensitive security document comprising a document substrate having a first and second major surfaces, at least one of said major surfaces having coated or printed thereon a composition comprising solvent soluble, water insoluble dye particles having a diameter of between about 0.3-50 μm, and a binder, said dye particles solubilizing when contacted with a solvent to form a colored visible stain or image on said substrate to indicate an attempted alteration of said document.
Claim 3
Dependent Claim
23 words
The security document of claim 1 in which said dye particles are comprised of particles having a diameter of between about 10-50 μm.
Claim 4
Dependent Claim
22 words
The security document of claim 1 in which said binder is selected form the group consisting of polyvinylpyrrolidone, proteins, and mixtures thereof.
Claim 5
Dependent Claim
24 words
The security document of claim 1 in which an opacifier is present and said dye particles have a diameter of between about 3-5 μm.
Claim 6
Dependent Claim
25 words
The security document of claim 4 in which said opacifier is selected from the group consisting of titanium dioxide, corn starch, wheat starch, or polystyrene.
Claim 7
Dependent Claim
24 words
The security document of claim 1 in which said composition is printed on said document substrate in the form of a background image pattern.
Claim 8
Dependent Claim
23 words
The security document of claim 1 in which said composition is printed on said document substrate in the form of covert warning indicia.
Claim 9
Dependent Claim
107 words
A solvent and pressure sensitive document comprising: a document substrate having first and second major surfaces; a first composition comprising solvent soluble, water insoluble dye particles having a diameter of between about 0.3-50 μm, and a binder, said first composition being printed or coated on a selected portion of one of said major surfaces of said document substrate; and a second composition comprising an encapsulated solvent for said dye particles printed on said first coating in an overlapping relationship; whereby the application of a solvent or pressure to the area of said document containing said first and second compositions produces a colored visible stain or image thereon.
Claim 10
Dependent Claim
107 words
A solvent and pressure sensitive document comprising: a document substrate having first and second major surfaces; a first composition comprising solvent soluble, water insoluble dye particles having a diameter of between about 0.3-50 μm, and a binder, said first composition being printed or coated on a selected portion of one of said major surfaces of said document substrate; and a second composition comprising an encapsulated solvent for said dye particles printed on said first coating in an overlapping relationship; whereby the application of a solvent or pressure to the area of said document containing said first and second compositions produces a colored visible stain or image thereon.
Claim 11
Dependent Claim
18 words
The document of claim 8 in which said dye particles have a diameter of between about 10-50 μm.
Claim 12
Dependent Claim
20 words
The document of claim 8 wherein said binder is selected from the group consisting of polyvinylpyrrlidone, proteins, and mixtures thereof.
Claim 13
Dependent Claim
21 words
The document of claim 8 wherein an opacifier is present and said dye particles have a diameter of between 3-5 μm.
Claim 14
Dependent Claim
26 words
The document of claim 11 in which said opacifier is selected from the group consisting of particles of titanium dioxide, corn starch, wheat starch, or polystyrene.
Claim 15
Dependent Claim
13 words
The document of claim 8 wherein said second composition includes a stilting material.
Claim 16
Dependent Claim
23 words
The document of claim 13 wherein said stilting material is selected from the group consisting of wheat starch, corn starch, or aluminum trihydrate.
Claim 17
Dependent Claim
18 words
The document of claim 8 wherein said first composition is printed in the form of covert warning indicia.
Claim 18
Dependent Claim
11 words
The document of claim 8 wherein said encapsulated solvent is diisopropylnaphthalene.
Claim 19
Dependent Claim
80 words
A solvent and pressure sensitive document comprising: a document substrate having first and second major surfaces; a composition printed or coated on a selected portion of one of said major surfaces, said composition comprising solvent soluble, water insoluble dye particles having a diameter of between about 0.3-50 μm, and a binder, and an encapsulated solvent; whereby the application of a solvent or pressure to the area of said document containing said coating produces a colored visible stain or image thereon.
Claim 20
Dependent Claim
80 words
A solvent and pressure sensitive document comprising: a document substrate having first and second major surfaces; a composition printed or coated on a selected portion of one of said major surfaces, said composition comprising solvent soluble, water insoluble dye particles having a diameter of between about 0.3-50 μm, and a binder, and an encapsulated solvent; whereby the application of a solvent or pressure to the area of said document containing said coating produces a colored visible stain or image thereon.
Claim 21
Dependent Claim
18 words
The document of claim 17 in which said dye comprises particles having a size of from 8-15 μm.
Claim 22
Dependent Claim
20 words
The document of claim 17 wherein said binder is selected from the group consisting of polyvinylpyrrolidone, proteins, and mixtures thereof.
Claim 23
Dependent Claim
14 words
The document of claim 17 wherein said composition includes an opacifier comprising polystyrene beads.
Claim 24
Dependent Claim
12 words
The document of claim 17 wherein said composition includes a stilting material.
Claim 25
Dependent Claim
24 words
The document of claim 21 in which said stilting material is selected from the group consisting of wheat starch, corn starch, or aluminum trihydrate.
Claim 26
Dependent Claim
17 words
The document of claim 17 wherein said coating is printed in the form of covert warning indicia.
Claim 27
Dependent Claim
11 words
The document of claim 17 wherein said encapsulated solvent is diisopropylnaphthalene.
Claim 28
Dependent Claim
135 words
A solvent and pressure sensitive document comprising: a document substrate having first and second major surfaces; a first coating composition comprising covert, solvent soluble, water insoluble dye particles having a diameter of between about 0.3-50 μm, and a binder, said composition deposited on the entire surface of at least one of said major surfaces of said document substrate; a second coating composition comprising an encapsulated solvent and a stilting material, said composition deposited on a selected portion of said first coating; whereby the application of a solvent to any portion of the surface of said document substrate produces a colored visible stain or image thereon and wherein the application of pressure or a solvent to the portion of said document substrate containing both said first and second coatings produces a colored visible stain or image.
Claim 29
Dependent Claim
135 words
A solvent and pressure sensitive document comprising: a document substrate having first and second major surfaces; a first coating composition comprising covert, solvent soluble, water insoluble dye particles having a diameter of between about 0.3-50 μm, and a binder, said composition deposited on the entire surface of at least one of said major surfaces of said document substrate; a second coating composition comprising an encapsulated solvent and a stilting material, said composition deposited on a selected portion of said first coating; whereby the application of a solvent to any portion of the surface of said document substrate produces a colored visible stain or image thereon and wherein the application of pressure or a solvent to the portion of said document substrate containing both said first and second coatings produces a colored visible stain or image.
Claim 30
Dependent Claim
19 words
The security document of claim 25 in which said dye comprises particles having a size of from 8-15 μm.
Claim 31
Dependent Claim
21 words
The security document of claim 25 wherein said binder is selected from the group consisting of polyvinylpyrrolidone, proteins, and mixtures thereof.
Claim 32
Dependent Claim
17 words
The security document of claim 25 wherein said first coating composition includes an opacifier comprising polystyrene beads.
Claim 33
Dependent Claim
25 words
The security document of claim 25 in which said stilting material is selected from the group consisting of wheat starch, corn starch, and aluminum trihydrate.
Claim 34
Dependent Claim
20 words
The security document of claim 25 wherein said first coating composition is printed in the form of covert warning indicia.
Claim 35
Dependent Claim
12 words
The security document of claim 25 wherein said encapsulated solvent is diisopropylnaphthalene.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-05-10 | 1996-11-09 | 1997-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-10 | 2000-11-09 | 2001-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-10 | 2004-11-09 | 2005-05-11 | $7700.00 | Window Closed / Lapsed |