US5064221A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for distinguishing printed originals from copies
Assignee: Francotyp Postalia GmbH
•
Filing: 1990-03-02
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Granted: 1991-11-12
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Expires: 2010-03-02
Abstract
Abstract In order to distinguish originals from copies, a method adds substances to printing medium that produces markings, which are not visible to the naked eye and are only recognizable by using special scanners.
Inventors
- 👤 Friedrich-Viktor Miehe
- 👤 Stephan Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:35
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/08; B; B41; B41M; B41M3/00; B41M3/14; B41M3/144; Y; Y10; Y10S; Y10S283/00; Y10S283/902
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
62 words
Method for making printed originals distinguishable from copies, which comprises: (a) using an ink ribbon as a printing medium for printing originals; (b) adding a substance to the ink ribbon in the form of a marking; (c) printing an original with the marked ink ribbon for producing invisible distinguishable markings in the printed original being recognizable solely by means of special scanners.
Claim 2
Dependent Claim
62 words
Method for making printed originals distinguishable from copies, which comprises: (a) using an ink ribbon as a printing medium for printing originals; (b) adding a substance to the ink ribbon in the form of a marking; (c) printing an original with the marked ink ribbon for producing invisible distinguishable markings in the printed original being recognizable solely by means of special scanners.
Claim 3
Dependent Claim
13 words
Method according to claim 1, which comprises using fluorescent substances as the substance.
Claim 4
Dependent Claim
21 words
Method according to claim 1, which comprises adding markings in the form of lines of the substance to the ink ribbon.
Claim 5
Dependent Claim
13 words
Method according to claim 3, which comprises using fluorescent substances as the substance.
Claim 6
Dependent Claim
21 words
Method according to claim 1, which comprises adding markings in the form of grids of the substance to the ink ribbon.
Claim 7
Dependent Claim
13 words
Method according to claim 5, which comprises using fluorescent substances as the substance.
Claim 8
Dependent Claim
21 words
Method according to claim 1, which comprises adding markings in the form of patterns of the substance to the ink ribbon.
Claim 9
Dependent Claim
13 words
Method according to claim 7, which comprises using fluorescent substances as the substance.
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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) | 1994-11-11 | 1995-05-13 | 1995-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-11 | 1999-05-13 | 1999-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-11 | 2003-05-13 | 2003-11-12 | $7700.00 | Window Closed / Lapsed |