Compositions: coating or plastic – Coating or plastic compositions – Marking
Reexamination Certificate
2006-11-28
2006-11-28
Lorengo, J. A. (Department: 1755)
Compositions: coating or plastic
Coating or plastic compositions
Marking
C106S031640, C106S031280
Reexamination Certificate
active
07141103
ABSTRACT:
New photosensitive optically variable inks are capable of printing images having improved resistance to water. The inks produce images which can be viewed with both visible and ultraviolet light to have physically coincident positive and negative images. They contain at least two types of colorants and other suitable ingredients to enable preparation for printing. The first colorant comprises a fluorescent dye emitting light within a characteristic emission band when excited by fluorescent-exciting radiation. The second colorant, which comprises a colloidal pigment alone or with a dye, has a light absorption band at longer wavelengths than the characteristic emission band of the first colorant or overlapping the emission wavelength of the first colorant, effectively to result in a dark color. The composition also contains an aqueous liquid vehicle comprising water and a water-soluble vehicle in sufficient amounts to achieve an ink viscosity and surface tension effective for application of the ink to a substrate in a predetermined pattern by ink jet printing.
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Auslander Judith D.
Chen Mike Y. R.
Chaclas Angelo N.
Faison-Gee Veronica
Lorengo J. A.
Pitney Bowes Inc.
Reichman Ronald
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