Patent US5208630A successfully refreshed from Google Patents.
US5208630A
Expired / Lapsed
US
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Process for the authentication of documents utilizing encapsulated toners
Assignee: Xerox Corp
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Filing: 1991-11-04
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Granted: 1993-05-04
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Expires: 2011-11-04
Abstract
Abstract A process for the authentication of documents which comprises generating developed documents in an electophotographic apparatus, or in a laser printer, with an encapsulated toner comprised of a core comprised of polymer, pigment, and an infrared absorbing component, and thereover a polymeric shell; and subjecting the document to an infrared reader whereby the near infrared absorbing component is detected spectroscopically.
Inventors
- 👤 H. Bruce Goodbrand
- 👤 James M. Duff
- 👤 Raymond W. Wong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:27
CPC Classifications
G; G03; G03G; G03G9/00; G03G9/08; G03G9/09; G03G9/0926; G03G21/00; G03G21/04; G03G9/093
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
59 words
A process for the authentication of documents which comprises generating developed documents in an electrophotographic apparatus, or in a laser printer, with an encapsulated toner comprised of a core comprised of polymer, pigment, and an infrared absorbing component, and thereover a polymeric shell; and subjecting said documents to an infrared reader whereby said infrared absorbing component is detected spectroscopically.
Claim 2
Dependent Claim
59 words
A process for the authentication of documents which comprises generating developed documents in an electrophotographic apparatus, or in a laser printer, with an encapsulated toner comprised of a core comprised of polymer, pigment, and an infrared absorbing component, and thereover a polymeric shell; and subjecting said documents to an infrared reader whereby said infrared absorbing component is detected spectroscopically.
Claim 3
Dependent Claim
58 words
A process for avoiding the copy of documents which comprises generating said documents entirely or in selected areas with an encapsulated toner comprised of a core comprised of polymer, pigment, and an infrared absorbing component, and thereover a polymeric shell, and thereafter scanning the reflected light from said documents whereby there is detected spectroscopically said infrared absorbing component.
Claim 4
Dependent Claim
58 words
A process for avoiding the copy of documents which comprises generating said documents entirely or in selected areas with an encapsulated toner comprised of a core comprised of polymer, pigment, and an infrared absorbing component, and thereover a polymeric shell, and thereafter scanning the reflected light from said documents whereby there is detected spectroscopically said infrared absorbing component.
Claim 5
Dependent Claim
97 words
A process for determining the authentication of documents comprised of a supporting substrate and developed images thereover which comprises generating documents in an electrophotographic apparatus, wherein latent images are initially formed followed by development with an encapsulated toner comprised of a core comprised of a polymer, pigment particles, and an infrared absorbing component, and thereover a polymeric shell; transferring the images developed to a supporting substrate, and fusing the images thereto; and subjecting said documents comprised of said supporting substrate and developed images thereover formed to an infrared reader whereby said infrared absorbing component is detected spectroscopically.
Claim 6
Dependent Claim
97 words
A process for determining the authentication of documents comprised of a supporting substrate and developed images thereover which comprises generating documents in an electrophotographic apparatus, wherein latent images are initially formed followed by development with an encapsulated toner comprised of a core comprised of a polymer, pigment particles, and an infrared absorbing component, and thereover a polymeric shell; transferring the images developed to a supporting substrate, and fusing the images thereto; and subjecting said documents comprised of said supporting substrate and developed images thereover formed to an infrared reader whereby said infrared absorbing component is detected spectroscopically.
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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) | 1996-05-03 | 1996-11-02 | 1997-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-05-03 | 2000-11-02 | 2001-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-05-03 | 2004-11-02 | 2005-05-04 | $7700.00 | Window Closed / Lapsed |