Radiant energy – Luminophor irradiation – With ultraviolet source
Patent
1975-12-15
1977-03-29
Borchelt, Archie R.
Radiant energy
Luminophor irradiation
With ultraviolet source
106 21, 25230135, G01N 2138
Patent
active
040151310
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.
REFERENCES:
patent: 3560238 (1971-02-01), Rothery
patent: 3639762 (1972-02-01), Hughes
patent: 3801782 (1974-04-01), Dorion
patent: 3804774 (1974-04-01), Betts et al.
patent: 3839639 (1974-10-01), Hughes
Bernard Richard A.
McDonough William F.
Montlick James A.
Borchelt Archie R.
Pitney-Bowes Inc.
Scribner Albert W.
Soltow, Jr. William D.
Vrahotes Peter
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