Compositions: coating or plastic – Coating or plastic compositions – Marking
Reexamination Certificate
2005-06-14
2005-06-14
Bell, Mark L. (Department: 1755)
Compositions: coating or plastic
Coating or plastic compositions
Marking
C106S031320, C252S301160, C252S301360, C252S30140R
Reexamination Certificate
active
06905538
ABSTRACT:
Water-based invisible red fluorescent inks provide machine-readable, inverse contrast invisible images and can be printed using conventional ink jet printers. The inks employ rare earth complexed ligand fluorophores having narrow excitation and emission spectra. In one embodiment the images are printed with an ink comprising water and a water-soluble organic fluorescent fluorophore, which when printed and dried on paper is invisible to the eye and fluoresces in the green to infrared range, e.g., from about 550 to 1200 nm, when irradiated with short wave length UV radiation, e.g., from 230 nm to 280 nm. The highly specific excitation and emission rates, coupled with a high inverse contrast on papers of all colors, makes them particularly useful as ink jet inks for postal and other purposes.
REFERENCES:
patent: 4921534 (1990-05-01), Jalon
patent: 5118349 (1992-06-01), Jalon
patent: 5502304 (1996-03-01), Berson et al.
patent: 5525798 (1996-06-01), Berson et al.
patent: 5542971 (1996-08-01), Auslander et al.
patent: 5569317 (1996-10-01), Sarada et al.
patent: 5684069 (1997-11-01), Auslander
patent: 5693693 (1997-12-01), Auslander et al.
patent: 5755860 (1998-05-01), Zhu
patent: 5837042 (1998-11-01), Lent et al.
patent: 6149719 (2000-11-01), Houle
patent: 6402986 (2002-06-01), Jones, II et al.
patent: 6458294 (2002-10-01), Oshima et al.
patent: 2002/0028347 (2002-03-01), Marrocco et al.
patent: 2003/0089273 (2003-05-01), Potrawa
patent: 2003/0106460 (2003-06-01), Imanishi et al.
patent: 53140105 (1978-12-01), None
patent: 01135683 (1989-05-01), None
patent: 2000/144029 (2000-05-01), None
patent: 2002/348508 (2002-12-01), None
Information-Based Indicia Program (IBIP)—Performance Criteria For Information-Based Indicia And Security Architecture For Open IBI Postage Evidencing Systems (PCIBI-O) Draft, Feb. 23, 2000.
Bell Mark L.
Chaclas Angelo N.
Faison Veronica F.
Malandra, Jr. Charles R.
Pitney Bowes Inc.
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