Patent US4175774A successfully refreshed from Google Patents.
US4175774A
Expired / Lapsed
US
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Non-copying printed document and method of printing same
Assignee: BEDINGHAUS BUSINESS COMMUNICATIONS Inc A CORP OF DELAWARE
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Filing: 1978-03-23
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Granted: 1979-11-27
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Expires: 1998-03-23
Abstract
Abstract A document with a background printed thereon which includes a first portion formed of small dots and a second portion formed of larger dots. The larger dots are of a size which is reproduced by a copying machine. The small dots are of a size which is not reproduced by the copying machine. When a copy is made, only the larger dots reproduce so that the copy is readily distinguishable from the original.
Inventors
- 👤 Gerald A. Tonges
- 👤 Eugene L. Elmlinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 20:21
CPC Classifications
B; B41; B41M; B41M3/00; B41M3/14; B41M3/146; B42; B42D; B42D25/00; B42D25/20; B42D25/29; B42D25/30; B42D25/333; G; G03; G03C; G03C5/00; G03C5/08; G03G; G03G21/00; G03G21/04; G03G21/043; G07; G07D; G07D7/00; G07D7/003; Y; Y10; Y10S; Y10S283/00; Y10S283/902
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
66 words
A document including a sheet and a background printed on the sheet, the background including a first portion formed of small dots and a second portion formed of larger dots, the dots being of a single color, the larger dots being of a size which is reproduced by a copying machine, the small dots being of a size which is not reproduced by the copying machine.
Claim 2
Dependent Claim
66 words
A document including a sheet and a background printed on the sheet, the background including a first portion formed of small dots and a second portion formed of larger dots, the dots being of a single color, the larger dots being of a size which is reproduced by a copying machine, the small dots being of a size which is not reproduced by the copying machine.
Claim 3
Dependent Claim
46 words
A document as in claim 1 in which the portions of the background are so arranged that when a copy of the document is made in which the larger dots are reproduced but the small dots are not reproduced, indicia is formed to void the document.
Claim 4
Independent Claim
82 words
A method of printing a document which includes printing a first portion of a background of the document in small dots which will not reproduce on a copying machine and printing a second portion of the background in larger dots which will reproduce on the copying machine, the dots being of a single color, whereby, when a copy of the document is made, only the second portion of the background is reproduced, and the first portion of the background is not reproduced.
Claim 5
Independent Claim
82 words
A method of printing a document which includes printing a first portion of a background of the document in small dots which will not reproduce on a copying machine and printing a second portion of the background in larger dots which will reproduce on the copying machine, the dots being of a single color, whereby, when a copy of the document is made, only the second portion of the background is reproduced, and the first portion of the background is not reproduced.
References Cited (Backward Citations)
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US1692405A
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US3088841A
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US3282720A
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US3713861A
Cited
US3852088A
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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) | 1982-11-26 | 1983-05-28 | 1983-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-26 | 1987-05-28 | 1987-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-26 | 1991-05-28 | 1991-11-27 | $7700.00 | Window Closed / Lapsed |