Patent US5057835A successfully refreshed from Google Patents.
US3886083A
Expired / Lapsed
US
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Safety inks and documents
Assignee: BNY Mellon NA
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Filing: 1974-05-09
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Granted: 1975-05-27
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Expires: 1994-05-09
Abstract
Abstract This safety ink is useful for printing a background of fine lines or dots on a document of value, such as a bank check. The background extends over an area which is adapted to be written upon. If the area in question is written upon and an attempt is thereafter made to eradicate the writing, the background changes color, thereby making it obvious upon visual inspection that an attempt has been made to alter the writing. The ink includes a dye which is soluble and bleachable and a fluorescent pigment whose fluorescence is enhanced if the attempted alteration is by means of a dissolving or bleaching technique, so that removal of part of the dye results in a change in color and also in an enhancement of the fluorescent intensity of the remaining printed matter. If an attempt is made to alter the writing by erasure, rather than eradication, some of the fluorescent pigment is removed, and its fluorescent intensity is consequently decreased. Hence, an attempted alteration is detectable either under ordinary light by the change in visible color or under ultraviolet light by the change in the fluorescent intensity.
Inventors
- 👤 Herbert Laxer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:46
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/50; B; B41; B41M; B41M3/00; B41M3/14; B41M3/144; Y; Y10; Y10S; Y10S428/00; Y10S428/916; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
22 words
AN AREA ADAPTED TO BE WRITTED UPON AND SENSITIVE TO ATTEMPTED ALTERATION OF WRITTEN MATERIAL THEREON BY EITHER SOLUTION, BLEACHING OR ERASURE;
Claim 2
Dependent Claim
22 words
AN AREA ADAPTED TO BE WRITTED UPON AND SENSITIVE TO ATTEMPTED ALTERATION OF WRITTEN MATERIAL THEREON BY EITHER SOLUTION, BLEACHING OR ERASURE;
Claim 3
Dependent Claim
114 words
A PRINTING INK CONSISTING ESSENTIALLY OF COLORING MATTER AND A VEHICLE SOLUBLE IN WATER AND LOWER ALCOHOLS AND LOWER KETONES, SAID VEHICLE CONSISTING ESSENTIALLY OF GLYCERINE, SORBITOL AND WATER, THE GLYCERINE BEING PRESENT IN AN AMOUNT IN THE RANGE 10-30% BY WEIGHT BASED ON SAID VEHICLE, THE REMAINING PERCENTAGES OF SORBITOL AND WATER HAVING A WEIGHT RATIO OF ABOUT 4:1, SAID COLORING MATTER INCLUDING A DYE SOLUBLE IN LOWER ALCOHOLS AND LOWER KETONES WHEREIN SAID LOWER ALCOHOLS AND SAID LOWER KETONES CONTAIN NOT MORE THAN 8 CARBON ATOMS PER MOLECULE, AND A FLUORESCENT PIGMENT WHICH IS NONBLEACHABLE, INSOLUBLE IN WATER AND NO MORE THAN VERY SLIGHTLY SOLUBLE IN SAID LOWER ALCOHOLS AND LOWER KETONES.
Claim 4
Dependent Claim
114 words
A PRINTING INK CONSISTING ESSENTIALLY OF COLORING MATTER AND A VEHICLE SOLUBLE IN WATER AND LOWER ALCOHOLS AND LOWER KETONES, SAID VEHICLE CONSISTING ESSENTIALLY OF GLYCERINE, SORBITOL AND WATER, THE GLYCERINE BEING PRESENT IN AN AMOUNT IN THE RANGE 10-30% BY WEIGHT BASED ON SAID VEHICLE, THE REMAINING PERCENTAGES OF SORBITOL AND WATER HAVING A WEIGHT RATIO OF ABOUT 4:1, SAID COLORING MATTER INCLUDING A DYE SOLUBLE IN LOWER ALCOHOLS AND LOWER KETONES WHEREIN SAID LOWER ALCOHOLS AND SAID LOWER KETONES CONTAIN NOT MORE THAN 8 CARBON ATOMS PER MOLECULE, AND A FLUORESCENT PIGMENT WHICH IS NONBLEACHABLE, INSOLUBLE IN WATER AND NO MORE THAN VERY SLIGHTLY SOLUBLE IN SAID LOWER ALCOHOLS AND LOWER KETONES.
Claim 5
Dependent Claim
218 words
SAID AREA HAVING A BACKGROUND OF PRINTED ELEMENTS INCLUDING A PATTERN PRINTED IN AN INK CONSISTING ESSENTIALLY OF COLORING MATTER AND A VEHICLE SOLUBLE IN WATER AND LOWER ALCOHOLS AND LOWER KETONES; A. SAID VEHICLE CONSISTING ESSENTIALLY OF GLYCERINE, SORBITOL, AND WATER, THE GLYCERING BEING PRESENT IN AN AMOUNT IN THE RANGE 10-30% BY WEIGHT BASED ON SAID VEHICLE, THE REMAINING PERCENTAGES OF SORBITOL AND WATER HAVING A WEIGHT RATIO OF ABOUT 4:1; B. SAID COLOR MATTER INCLUDING: I. A DYE SOLUBLE IN LOWER ALCOHOLS AND LOWER KETONES, WHEREIN SAID LOWER ALCOHOLS AND SAID LOWER KETONES CONTAIN NOT MORE THAN EIGHT CARBON ATOMS PER MOLECULE, SAID DYE BEING BLEACHABLE AND SOLUBLE IN WATER, SAID DYE BEING AT LEAST PARTLY REMOVED BY SOLUTION OR BLEACHING, AND THEREBY CHANGING THE COLOR OF THE BACKGROUND IN RESPONSE TO ATTEMPTED ALTERNATION OF WRITTEN MATERIAL BY SOLUTION OR BLEACHING TECHNIQUES; AND II. A FLUORESCENT PIGMENT WHICH IS NON-BLEACHABLE, INSOLUBLE IN WATER, AND NO MORE THAN VERY SLIGHTLY SOLUBLE IN SAID LOWER ALCOHOLS AND LOWER KETONES, SAID PIGMENT HAVING ITS FLUORESCENCE ENHANCED BY REMOVAL OF THE DYE DURING SOLUTION OR BLEACHING, AND BEING AT LEAST PARTLY REMOVED BY ERASURE, THEREBY CHANGING THE COLOR AND FLUORESCENT INTENSITY OF THE BACKGROUND, WHEN VIEWED UNDER ULTRAVIOLET LIGHT, IN RESPONSE TO ATTEMPTED ALTERATION OF WRITTEN MATERIAL BY ERASURE.
Claim 6
Dependent Claim
218 words
SAID AREA HAVING A BACKGROUND OF PRINTED ELEMENTS INCLUDING A PATTERN PRINTED IN AN INK CONSISTING ESSENTIALLY OF COLORING MATTER AND A VEHICLE SOLUBLE IN WATER AND LOWER ALCOHOLS AND LOWER KETONES; A. SAID VEHICLE CONSISTING ESSENTIALLY OF GLYCERINE, SORBITOL, AND WATER, THE GLYCERING BEING PRESENT IN AN AMOUNT IN THE RANGE 10-30% BY WEIGHT BASED ON SAID VEHICLE, THE REMAINING PERCENTAGES OF SORBITOL AND WATER HAVING A WEIGHT RATIO OF ABOUT 4:1; B. SAID COLOR MATTER INCLUDING: I. A DYE SOLUBLE IN LOWER ALCOHOLS AND LOWER KETONES, WHEREIN SAID LOWER ALCOHOLS AND SAID LOWER KETONES CONTAIN NOT MORE THAN EIGHT CARBON ATOMS PER MOLECULE, SAID DYE BEING BLEACHABLE AND SOLUBLE IN WATER, SAID DYE BEING AT LEAST PARTLY REMOVED BY SOLUTION OR BLEACHING, AND THEREBY CHANGING THE COLOR OF THE BACKGROUND IN RESPONSE TO ATTEMPTED ALTERNATION OF WRITTEN MATERIAL BY SOLUTION OR BLEACHING TECHNIQUES; AND II. A FLUORESCENT PIGMENT WHICH IS NON-BLEACHABLE, INSOLUBLE IN WATER, AND NO MORE THAN VERY SLIGHTLY SOLUBLE IN SAID LOWER ALCOHOLS AND LOWER KETONES, SAID PIGMENT HAVING ITS FLUORESCENCE ENHANCED BY REMOVAL OF THE DYE DURING SOLUTION OR BLEACHING, AND BEING AT LEAST PARTLY REMOVED BY ERASURE, THEREBY CHANGING THE COLOR AND FLUORESCENT INTENSITY OF THE BACKGROUND, WHEN VIEWED UNDER ULTRAVIOLET LIGHT, IN RESPONSE TO ATTEMPTED ALTERATION OF WRITTEN MATERIAL BY ERASURE.
Claim 7
Dependent Claim
4 words
A PRINTED DOCUMENT COMPRISING:
Claim 8
Dependent Claim
4 words
A PRINTED DOCUMENT COMPRISING:
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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) | 1978-05-26 | 1978-11-25 | 1979-05-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-26 | 1982-11-25 | 1983-05-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-26 | 1986-11-25 | 1987-05-27 | $7700.00 | Window Closed / Lapsed |