Fluorescent ink

Details Fluorescent ink Fluorescent ink

2005-06-24

2008-12-30

Cain, Edward J (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Processes of preparing a desired or intentional composition...

C523S161000

Reexamination Certificate

active

07470731

ABSTRACT:
A water-based ink for use in an ink jet printer for printing machine-readable indicia on a substrate is disclosed. The ink jet ink comprises fluorescent nanoparticles having a diameter between about 30 nm and about 100 nm; and an aqueous liquid vehicle. The aqueous liquid vehicle comprises water and a water soluble vehicle in sufficient amounts to achieve an ink viscosity and surface tension effective for application of the ink jet ink to the substrate in a predetermined pattern by ink jet printing.

REFERENCES:
patent: 6288222 (2001-09-01), Roth
patent: 2003/0032699 (2003-02-01), Wakabayashi et al.
patent: 2003/0177941 (2003-09-01), Barbera-Guillem
patent: 2005/0068395 (2005-03-01), Haubold
patent: 1314766 (2003-05-01), None
patent: WO99/52708 (1999-10-01), None
patent: WO2004/064751 (2004-08-01), None

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