US5161829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Security paper and method of manufacturing the same
Assignee: ROYAL BLUE PAPERS Inc
•
Filing: 1992-03-09
•
Granted: 1992-11-10
•
Expires: 2012-03-09
Abstract
Abstract A security paper includes at least two layers of paper each having inner and outer surfaces and predetermined mechanical properties, color and optical density. Authentication indicia is printed on the inner surface of at least one layer. The indicia is formed of a chemically, mechanically and thermally stable medium having a predetermined color, color intensity and optical density. A chemically, mechanically and thermally stable adhesive permanently adheres the inner surfaces of the layers together. The adhesive has a predetermined color and optical density. The color and optical density of the layers, the color, color intensity and optical density of the medium and the color and optical density of the adhesive combine to render the authentication indicia detectable in transmitted light and substantially imperceptible in reflected light.
Inventors
- 👤 Richard W. Detrick
- 👤 Robert Patterson
- 👤 Kim W. Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:35
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/14; D21H21/40; D21H21/44; B; B32; B32B; B32B29/00; B32B29/06; B42; B42D; B42D25/00; B42D25/20; B42D25/29; B42D25/30; B42D25/351; D21H21/42; Y; Y10; Y10S; Y10S283/00; Y10S283/901; Y10S428/00; Y10S428/916
Claims Analysis
Total Claims: 61
Claim 1
Independent Claim
131 words
A security paper comprising: a first layer of paper having an inner surface and an outer surface; a second layer of paper having an inner surface and an outer surface; and an authentication indicator disposed on an inner surface of at least one of said layers of paper; the inner surfaces of said layers of paper being affixed relative to each other to form a lamination with said authentication indicator being disposed therebetween said authentication indicator being indicia printed on an inner surface of one of said layers of paper, whereby said first layer of paper, said second layer of paper and said indicia are of predetermined optical density selected to enable said indicia to be detectable in transmitted light and be imperceptible on a photocopy made by utilizing reflected light.
Claim 2
Dependent Claim
131 words
A security paper comprising: a first layer of paper having an inner surface and an outer surface; a second layer of paper having an inner surface and an outer surface; and an authentication indicator disposed on an inner surface of at least one of said layers of paper; the inner surfaces of said layers of paper being affixed relative to each other to form a lamination with said authentication indicator being disposed therebetween said authentication indicator being indicia printed on an inner surface of one of said layers of paper, whereby said first layer of paper, said second layer of paper and said indicia are of predetermined optical density selected to enable said indicia to be detectable in transmitted light and be imperceptible on a photocopy made by utilizing reflected light.
Claim 3
Dependent Claim
22 words
The security paper according to claim 1, and further including adhesive for affixing said inner surfaces of said layers of paper together.
Claim 4
Dependent Claim
15 words
The security paper according to claim 1, wherein said authentication indicator is a magnetic material.
Claim 5
Dependent Claim
16 words
The security paper according to claim 1, wherein said authentication indicator is a universal product code.
Claim 6
Dependent Claim
18 words
The security paper according to claim 1, wherein said authentication indicator is a medium detectable by non-visible light.
Claim 7
Dependent Claim
15 words
The security paper according to claim 1, wherein said authentication indicator is a fluorescent medium.
Claim 8
Dependent Claim
65 words
A security paper comprising a lamination of at least two layers of paper having opposed surfaces permanently adhered together and an authentication indicator printed on at least one of said opposed surfaces, said layers and said authentication indicator having light scattering, absorption, reflectance and transmission characteristics for rendering said authentication indicator detectable in transmitted light and imperceptible on a photocopy made by utilizing reflected light.
Claim 9
Dependent Claim
65 words
A security paper comprising a lamination of at least two layers of paper having opposed surfaces permanently adhered together and an authentication indicator printed on at least one of said opposed surfaces, said layers and said authentication indicator having light scattering, absorption, reflectance and transmission characteristics for rendering said authentication indicator detectable in transmitted light and imperceptible on a photocopy made by utilizing reflected light.
Claim 10
Dependent Claim
19 words
The security paper according to claim 7, wherein said authentication indicator is perceptible to light in the visible spectrum.
Claim 11
Dependent Claim
22 words
The security paper according to claim 7, and further including adhesive for adhering opposed surfaces of said layers relative to each other.
Claim 12
Dependent Claim
131 words
A security paper comprising: at least two layers of paper each having inner and outer surfaces and predetermined mechanical properties, color and optical characteristics; authentication indicia printed on the inner surface of at least one of said layers, said indicia being formed of a chemically, mechanically and thermally stable medium having a predetermined color, color intensity and optical characteristics; and a chemically, mechanically and thermally stable adhesive for permanently adhering surfaces of said layers together, said adhesive having predetermined color and optical characteristics; the color and optical characteristics of said layers, the color, color intensity and optical characteristics of said medium and the color and optical characteristics of said adhesive being selected to render said authentication indicia detectable in transmitted light and imperceptible on a photocopy made by utilizing reflected light.
Claim 13
Dependent Claim
131 words
A security paper comprising: at least two layers of paper each having inner and outer surfaces and predetermined mechanical properties, color and optical characteristics; authentication indicia printed on the inner surface of at least one of said layers, said indicia being formed of a chemically, mechanically and thermally stable medium having a predetermined color, color intensity and optical characteristics; and a chemically, mechanically and thermally stable adhesive for permanently adhering surfaces of said layers together, said adhesive having predetermined color and optical characteristics; the color and optical characteristics of said layers, the color, color intensity and optical characteristics of said medium and the color and optical characteristics of said adhesive being selected to render said authentication indicia detectable in transmitted light and imperceptible on a photocopy made by utilizing reflected light.
Claim 14
Dependent Claim
14 words
The security paper according to claim 10, wherein the two layers are substantially identical.
Claim 15
Dependent Claim
28 words
The security paper according to claim 10, wherein one layer of paper has a predetermined composition and the other layer of paper has a distinct composition relative thereto.
Claim 16
Dependent Claim
36 words
The security paper according to claim 10, wherein one layer of paper has predetermined mechanical properties, color and optical characteristics and the other layer of paper has distinct mechanical properties, color and optical characteristics relative thereto.
Claim 17
Dependent Claim
22 words
The security paper according to claim 10, wherein at least one of said two layers of paper is formed of natural fiber.
Claim 18
Dependent Claim
20 words
The security paper according to claim 10, wherein at least one of said two layers of paper contains synthetic fiber.
Claim 19
Dependent Claim
20 words
The security paper according to claim 10, wherein at least one of said two layers of paper includes a dye.
Claim 20
Dependent Claim
20 words
The security paper according to claim 10, wherein at least one of said two layers of paper includes a pigment.
Claim 21
Dependent Claim
24 words
The security paper according to claim 10, wherein said adhesive has greater resistance to chemical, mechanical or thermal degradation than said layers of paper.
Claim 22
Dependent Claim
12 words
The security paper according to claim 10, wherein said adhesive is thermosetting.
Claim 23
Dependent Claim
14 words
The security paper according to claim 10, wherein said adhesive is a thermosetting acrylic.
Claim 24
Dependent Claim
25 words
The security paper according to claim 10, wherein said adhesive is selected from the group consisting of carboxylated polymers, thermosetting acrylics and N-methylol acrylamide interpolymers.
Claim 25
Dependent Claim
15 words
The security paper according to claim 10, wherein said adhesive includes a pigment or dye.
Claim 26
Dependent Claim
26 words
The security paper according to claim 10, wherein said medium is at least as chemically, mechanically and thermally resistant to degradation as said layers of paper.
Claim 27
Dependent Claim
13 words
The security paper according to claim 10, wherein said medium is an ink.
Claim 28
Dependent Claim
37 words
The security paper according to claim 10, wherein said authentication indicia is printed in a first medium; and a second authentication indicia is printed in a second medium on at least one of said layers of paper.
Claim 29
Dependent Claim
16 words
The security paper according to claim 25, wherein the first and second media are the same.
Claim 30
Dependent Claim
31 words
The security paper according to claim 10, wherein said authentication indicia includes a stripe disposed in a predetermined spatial relation to at least one edge of said at least one layer.
Claim 31
Dependent Claim
15 words
The security paper according to claim 10, wherein said authentication indicia includes optically readable characters.
Claim 32
Dependent Claim
15 words
The security paper according to claim 10, wherein said authentication indicia can be sensed magnetically.
Claim 33
Dependent Claim
15 words
The security paper according to claim 10, wherein said authentication indicia fluoresces in ultraviolet light.
Claim 34
Dependent Claim
42 words
The security paper according to claim 10, wherein said authentication indicia is printed on the inner surface of one said layer in a first medium; and authentication indicia is printed on the inner surface of the other layer in a second medium.
Claim 35
Dependent Claim
19 words
The security paper according to claim 31, wherein said second medium is substantially the same as said first medium.
Claim 36
Independent Claim
116 words
A method of manufacturing composite security paper comprising the steps of: providing layers of paper each having an inner surface and an outer surface; printing an authentication indicator on said inner surface of at least one of said layers; applying adhesive to a surface of said layers; and adhesively joining inner respective inner surfaces of said layers to form a lamination; said authentication indicator being indicia printed on said inner surface of at least one of said layers whereby each of said layers of paper and said authentication indicator are of predetermined optical density selected to enable said authentication indicator to be detectable in transmitted light and imperceptible on a photocopy made by utilizing reflected light.
Claim 37
Independent Claim
116 words
A method of manufacturing composite security paper comprising the steps of: providing layers of paper each having an inner surface and an outer surface; printing an authentication indicator on said inner surface of at least one of said layers; applying adhesive to a surface of said layers; and adhesively joining inner respective inner surfaces of said layers to form a lamination; said authentication indicator being indicia printed on said inner surface of at least one of said layers whereby each of said layers of paper and said authentication indicator are of predetermined optical density selected to enable said authentication indicator to be detectable in transmitted light and imperceptible on a photocopy made by utilizing reflected light.
Claim 38
Dependent Claim
13 words
The method according to claim 33, wherein said layers are webs of paper.
Claim 39
Independent Claim
114 words
A method of manufacturing composite security paper comprising the steps of: providing webs of paper each including an inner surface, said webs of paper having predetermined mechanical properties, color and optical characteristics; printing authentication indicia on the inner surface of at least one of said webs in a stable medium having predetermined color, color intensity and optical characteristics; applying adhesive to a surface of said webs; and adhesively joining respective inner surfaces of said webs to form a lamination; whereby said webs, authentication indicia and said adhesive have light scattering, absorption, reflectance and transmission characteristics for rendering said authentication indicia detectable in transmitted light and imperceptible on a photocopy made by utilizing reflected light.
Claim 40
Independent Claim
114 words
A method of manufacturing composite security paper comprising the steps of: providing webs of paper each including an inner surface, said webs of paper having predetermined mechanical properties, color and optical characteristics; printing authentication indicia on the inner surface of at least one of said webs in a stable medium having predetermined color, color intensity and optical characteristics; applying adhesive to a surface of said webs; and adhesively joining respective inner surfaces of said webs to form a lamination; whereby said webs, authentication indicia and said adhesive have light scattering, absorption, reflectance and transmission characteristics for rendering said authentication indicia detectable in transmitted light and imperceptible on a photocopy made by utilizing reflected light.
Claim 41
Dependent Claim
13 words
The method according to claim 35, wherein said printing step uses offset printing.
Claim 42
Dependent Claim
13 words
The method according to claim 35, wherein said printing step uses flexographic printing.
Claim 43
Dependent Claim
13 words
The method according to claim 35, wherein said printing step uses rotogravure printing.
Claim 44
Dependent Claim
14 words
The method according to claim 35, wherein said authentication indicia includes optically readable characters.
Claim 45
Dependent Claim
12 words
The method according to claim 35, wherein said medium is an ink.
Claim 46
Dependent Claim
20 words
The method according to claim 35, wherein said medium includes means for permitting said authentication indicia to be magnetically sensed.
Claim 47
Dependent Claim
22 words
The method according to claim 35, wherein said medium resists chemical, mechanical and thermal degradation at least as well as said webs.
Claim 48
Dependent Claim
26 words
The method according to claim 35, and further including the step of printing a second authentication indicia on said inner surface of one of said webs.
Claim 49
Dependent Claim
14 words
The method according to claim 35, wherein said applying step includes applying adhesive flexographically.
Claim 50
Dependent Claim
15 words
The method according to claim 35, wherein said applying step includes applying adhesive by rotogravure.
Claim 51
Dependent Claim
31 words
The method according to claim 35, wherein said adhesive is applied at a rate of about 3 pounds to about 12 pounds per 3000 ft 2 of said web of paper.
Claim 52
Dependent Claim
31 words
The method according to claim 35, wherein said adhesive is applied at a rate of about 3 pounds to about 7 pounds per 3000 ft 2 of said web of paper.
Claim 53
Dependent Claim
31 words
The method according to claim 35, wherein said adhesive is applied at a rate of about 4 pounds to about 6 pounds per 3000 ft 2 of said web of paper.
Claim 54
Dependent Claim
23 words
The method according to claim 35, wherein said adhesive has greater resistance to chemical, mechanical and thermal degradation than said web of paper.
Claim 55
Dependent Claim
12 words
The method according to claim 35, wherein said adhesive, includes a dye.
Claim 56
Dependent Claim
12 words
The method according to claim 35, wherein said adhesive includes a pigment.
Claim 57
Dependent Claim
10 words
A security paper manufactured by the method of claim 35.
Claim 58
Dependent Claim
120 words
A security paper comprising: a lamination of a plurality of layers of paper, each said layer having predetermined mechanical, color and optical characteristics, said lamination including adhesive permanently adhering respective surfaces of said layers together to form said lamination, said adhesive having predetermined color and optical characteristics and having greater resistance to chemical, thermal and mechanical degradation than said layers; and authentication indicia printed in a chemically, thermally and mechanically stable medium on an interior surface of an sheet, said medium having predetermined color and optical characteristics; the color and optical characteristics of said layers, said adhesive and said medium combining to render said authentication indicia detectable in transmitted light and imperceptible on a photocopy made by utilizing reflected light.
Claim 59
Dependent Claim
120 words
A security paper comprising: a lamination of a plurality of layers of paper, each said layer having predetermined mechanical, color and optical characteristics, said lamination including adhesive permanently adhering respective surfaces of said layers together to form said lamination, said adhesive having predetermined color and optical characteristics and having greater resistance to chemical, thermal and mechanical degradation than said layers; and authentication indicia printed in a chemically, thermally and mechanically stable medium on an interior surface of an sheet, said medium having predetermined color and optical characteristics; the color and optical characteristics of said layers, said adhesive and said medium combining to render said authentication indicia detectable in transmitted light and imperceptible on a photocopy made by utilizing reflected light.
Claim 60
Dependent Claim
155 words
A document authentication system comprising: a document comprising: a lamination of a plurality of layers of paper, each layer having predetermined mechanical, color and optical characteristics, said lamination including adhesive permanently adhering respective surfaces of said layers together to form said lamination, said adhesive having predetermined color and optical characteristics and having greater resistance to chemical, thermal and mechanical degradation than said layers; and authentication indicia printed in a chemically, thermally and mechanically stable medium on at least one interior surface of at least one layer, said medium having predetermined color and optical characteristics; the color and optical characteristics of said layers, said adhesive and said medium combining to render said authentication indicia detectable in transmitted light of a predetermined wavelength and imperceptible on a photocopy made by utilizing reflected light; and a source of light of said predetermined wavelength disposed to permit selective placement of said document in position to transmit said light therethrough.
Claim 61
Dependent Claim
155 words
A document authentication system comprising: a document comprising: a lamination of a plurality of layers of paper, each layer having predetermined mechanical, color and optical characteristics, said lamination including adhesive permanently adhering respective surfaces of said layers together to form said lamination, said adhesive having predetermined color and optical characteristics and having greater resistance to chemical, thermal and mechanical degradation than said layers; and authentication indicia printed in a chemically, thermally and mechanically stable medium on at least one interior surface of at least one layer, said medium having predetermined color and optical characteristics; the color and optical characteristics of said layers, said adhesive and said medium combining to render said authentication indicia detectable in transmitted light of a predetermined wavelength and imperceptible on a photocopy made by utilizing reflected light; and a source of light of said predetermined wavelength disposed to permit selective placement of said document in position to transmit said light therethrough.
References Cited (Backward Citations)
DE244479C
Cited
US28370A
Cited
US210497A
Cited
DE16595C
Cited
US672582A
Cited
US1929828A
Cited
US2019845A
Cited
US2384667A
Cited
US2711120A
Cited
GB696673A
Cited
US3880706A
Cited
US3746606A
Cited
US3988571A
Cited
US4186943A
Cited
US4504357A
Cited
US4496961A
Cited
US4480177A
Cited
US4437935A
Cited
US4462867A
Cited
US4816321A
Cited
US4816322A
Cited
US4534398A
Cited
US4763927A
Cited
US4552617A
Cited
US4761205A
Cited
US4652015A
Cited
US4941687A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1995-11-10 | 1996-05-11 | 1996-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-10 | 2000-05-11 | 2000-11-10 | $3760.00 | Window Closed / Lapsed |
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