US4015131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-detectable ink compositions and method of use
Assignee: Pitney Bowes Inc
•
Filing: 1975-12-15
•
Granted: 1977-03-29
•
Expires: 1995-12-15
Abstract
Abstract Inks are disclosed wherein the ordinary mixed light color of the ink is a color substantially different than the fluorescent color of the ink. Methods of use include detection of at least the fluorescent wavelength of the ink or detection of both the ink colors when irradiated for fluorescence and by exposure to mixed light.
Inventors
- 👤 William F. McDonough
- 👤 James A. Montlick
- 👤 Richard A. Bernard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:05
CPC Classifications
C; C09; C09D; C09D11/00; C09D11/50; B; B07; B07C; B07C3/00; B07C3/10; B07C3/14; B07C3/18; C09D5/00; C09D5/22
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
166 words
The method of processing and distinguishing articles comprising the steps of A. marking the articles with an ink, 1. said ink having a first coloration in ordinary mixed light, but which fluoresces within a predetermined wavelength range when irradiated, said fluorescent color being different than the mixed light color of said ink, a. said ink containing i. 2 to 25% by weight of at least one fluorescent pigment, ii. 0.3 to 10% of at least one non-fluorescent pigment, iii. 0.25 to 5% gellant, and iiii. 0 to 1% antioxidant iiiii. all being in an ink vehicle essentially comprising the remainder of said ink; then B. processing the articles by detection means comprising a detector responsive to at least the fluorescent wavelength of said ink, whereby said articles may be processed by a machine having at least fluorescent detection means covering the range of fluorescent wavelength of said ink and said articles may be further optically processed by differentiation of the mixed light color of said inks.
Claim 2
Independent Claim
166 words
The method of processing and distinguishing articles comprising the steps of A. marking the articles with an ink, 1. said ink having a first coloration in ordinary mixed light, but which fluoresces within a predetermined wavelength range when irradiated, said fluorescent color being different than the mixed light color of said ink, a. said ink containing i. 2 to 25% by weight of at least one fluorescent pigment, ii. 0.3 to 10% of at least one non-fluorescent pigment, iii. 0.25 to 5% gellant, and iiii. 0 to 1% antioxidant iiiii. all being in an ink vehicle essentially comprising the remainder of said ink; then B. processing the articles by detection means comprising a detector responsive to at least the fluorescent wavelength of said ink, whereby said articles may be processed by a machine having at least fluorescent detection means covering the range of fluorescent wavelength of said ink and said articles may be further optically processed by differentiation of the mixed light color of said inks.
Claim 3
Dependent Claim
69 words
The method defined in claim 1 wherein said fluorescent pigments are taken from the group consisting of 1. fluorescent pigment dispersions in a vehicle which comprises a resin dissolved in a narrow fraction petroleum distillate having a boiling range of from about 440° F. to 510° F., 2. fluorescent pigment dispersions in a drying type alkyd resin, and 3. comminuted solid solutions of fluorescent dyes in modified sulfonamide resins.
Claim 4
Dependent Claim
14 words
The method defined in claim 1 wherein said detection means comprises ultraviolet irradiation means.
Claim 5
Dependent Claim
20 words
The method defined in claim 1 wherein the fluorescent wavelength of said inks is in the orange to red range.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |