US4903991A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Document security system
Assignee: Bank of New York Mellon Corp
•
Filing: 1983-07-18
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Granted: 1990-02-27
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Expires: 2003-07-18
Abstract
Abstract A system for verifying the authenticity of documents such as negotiable instruments wherein a field of photoactive microcapsules is provided in a localized area on the document. By image-wise exposing the document, a latent image of a verification meand such as a signature, fingerprint, or the like can be produced on the document which can be instantly developed upon rupturing the microcapsules to verify the authenticity of the document when it is presented.
Inventors
- 👤 Richard F. Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:43
CPC Classifications
B; B42; B42D; B42D25/00; B42D25/20; B42D25/29; Y; Y10; Y10S; Y10S283/00; Y10S283/901
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
143 words
A document such as a bill of lading, a check, or the like, said document having markings indicative of a bill of lading, a check, or the like and having a field of microcapsules on at least one surface thereof in a localized area, said microcapsules containing an internal phase including a radiation sensitive composition which undergoes a change in viscosity upon exposure to actinic radiation, said field carrying a latent image in the form of an image-wise distribution of microcapsules which are capable of releasing said internal phase upon rupturing, wherein said latent image is suitable for verifying the authenticity of said document or the signatures thereon, said latent image being produced in said field of microcapsules by image-wise exposing said field to actinic radiation and the authencity of said document being verifiable by rupturing said microcapsules and developing said latent image.
Claim 2
Dependent Claim
143 words
A document such as a bill of lading, a check, or the like, said document having markings indicative of a bill of lading, a check, or the like and having a field of microcapsules on at least one surface thereof in a localized area, said microcapsules containing an internal phase including a radiation sensitive composition which undergoes a change in viscosity upon exposure to actinic radiation, said field carrying a latent image in the form of an image-wise distribution of microcapsules which are capable of releasing said internal phase upon rupturing, wherein said latent image is suitable for verifying the authenticity of said document or the signatures thereon, said latent image being produced in said field of microcapsules by image-wise exposing said field to actinic radiation and the authencity of said document being verifiable by rupturing said microcapsules and developing said latent image.
Claim 3
Dependent Claim
12 words
The documents of claim 1, wherein said microcapsules have discrete microcapsule walls.
Claim 4
Dependent Claim
26 words
The document of claim 2 wherein said microcapsules have associated therewith an image-forming agent which is image-wise mobilized by said internal phase upon rupturing said microcapsules.
Claim 5
Dependent Claim
37 words
The document of claim 3 wherein said image forming agent is a substantially colorless color former of the electron donating type which reacts with a color developer of the electron accepting type to produce a color image.
Claim 6
Dependent Claim
21 words
The documents of claim 4 wherein said color developer is present on said document in said localized area with said microcapsules.
Claim 7
Dependent Claim
18 words
The document of claim 5 wherein said radiation sensitive composition includes a polyethylenically unsaturated compound and a photoinitiator.
Claim 8
Dependent Claim
29 words
The document of claim 4 wherein said latent image is an image of an identification number, a signature, or a likeness of a person authorized to negotiate said document.
Claim 9
Dependent Claim
31 words
The document of claim 4 wherein said color developer is provided on a developer sheet and said latent image is developed by image-wise transferring said color former to said developer sheet.
Claim 10
Dependent Claim
42 words
The document of claim 3 wherein said latent image is developed by rupturing said microcapsules and applying a toner to said field, said toner being one which selectively adheres to said field in the areas in which said internal phase is released.
Claim 11
Dependent Claim
35 words
The document of claim 3 wherein said image-forming agent is a visible dye and said latent image is developed by rupturing said microcapsules in contact with a sheet to which said dye is image-wise transferred.
Claim 12
Dependent Claim
15 words
The document of claim 1 wherein said radiation sensitive composition is sensitive to non-ambient radiation.
Claim 13
Dependent Claim
145 words
A process for verifying the authenticity of a document wherein said document has markings thereon indicative of a check, bill of lading or the like and carries a field of microcapsules on at least one face thereof in a localized area, said microcapsules containing an internal phase including a radiation sensitive composition which undergoes a change in viscosity upon exposure to actinic radiation, said process comprising: image-wise exposing said field of microcapsules to actinic radiation so as to produce a latent image in said field which is useful in verifying the authenticity of said document, said latent image being an image-wise distribution of microcapsules capable of releasing said internal phase upon their rupture, rupturing said microcapsules and developing said latent image so as to produce a visible image from which the authenticity of said document can be verified, and verifying the authenticity of said document.
Claim 14
Dependent Claim
145 words
A process for verifying the authenticity of a document wherein said document has markings thereon indicative of a check, bill of lading or the like and carries a field of microcapsules on at least one face thereof in a localized area, said microcapsules containing an internal phase including a radiation sensitive composition which undergoes a change in viscosity upon exposure to actinic radiation, said process comprising: image-wise exposing said field of microcapsules to actinic radiation so as to produce a latent image in said field which is useful in verifying the authenticity of said document, said latent image being an image-wise distribution of microcapsules capable of releasing said internal phase upon their rupture, rupturing said microcapsules and developing said latent image so as to produce a visible image from which the authenticity of said document can be verified, and verifying the authenticity of said document.
Claim 15
Dependent Claim
29 words
The process of claim 12 wherein an image-forming agent is associated with said field of microcapsules which is image-wise mobilized by said internal phase when said microcapsules are ruptured.
Claim 16
Dependent Claim
36 words
The process of claim 13 wherein said image-forming agent is a substantially colorless color precursor of the electron donating type which reacts with a color developer of the electron accepting type to form a color image.
Claim 17
Dependent Claim
20 words
The process of claim 14 wherein said color developer is present on said document in said field with said microcapsules.
Claim 18
Dependent Claim
42 words
The process of claim 15 wherein said color developer is present in a layer underlying said layer of microcapsules such that said color developer reacts with said color former in the areas in which said internal phase is released from said microcapsules.
Claim 19
Dependent Claim
60 words
The process of claim 14 wherein said color developer is provided on a developer sheet and (said latent image) is developed by contacting said document with said developer sheet in the area of said field and thereby image-wise transferring said color former to said developer sheet and forming an image from which the authenticity of said instrument can be verified.
Claim 20
Dependent Claim
60 words
The process of claim 13 wherein said image-forming agent is a visible dye or pigment and (said latent image) is developed by contacting said document in the area of said field with a sheet to which said dye or pigment, mobilized by said internal phase, transfers and forms an image from which the authenticity of said document can be verified.
Claim 21
Dependent Claim
43 words
The process of claim 12 wherein (said latent image) is developed by applying a toner to said document in the area of said field, said toner adhering to said field in the areas in which said internal phase is released from said microcapsules.
References Cited (Backward Citations)
US3001873A
Cited
US2953454A
Cited
US3072481A
Cited
US3001887A
Cited
US3090687A
Cited
US3048697A
Cited
US3219446A
Cited
US3116148A
Cited
GB1001831A
Cited
GB1001832A
Cited
GB1058798A
Cited
GB1141475A
Cited
JPS4417733Y1
Cited
GB1193923A
Cited
US3700439A
Cited
US3736139A
Cited
JPS496212A
Cited
US3892569A
Cited
US4037007A
Cited
US4149887A
Cited
US4009892A
Cited
US3950013A
Cited
JPS5234488A
Cited
JPS539519A
Cited
JPS539520A
Cited
GB2073661A
Cited
US4360548A
Cited
US4397941A
Cited
US4330613A
Cited
JPS57124343A
Cited
JPS57179836A
Cited
JPS57197538A
Cited
JPS5817432A
Cited
JPS5823024A
Cited
JPS5823025A
Cited
JPS5845090A
Cited
JPS5845084A
Cited
US4399209A
Cited
US4440846A
Cited
US4562137A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-02-26 | 1993-08-28 | 1994-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-26 | 1997-08-28 | 1998-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-26 | 2001-08-28 | 2002-02-27 | $7700.00 | Window Closed / Lapsed |