Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Processes of preparing a desired or intentional composition...
Reexamination Certificate
2008-05-27
2008-05-27
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
10957611
ABSTRACT:
Disclosed herein is a pigment-dispersed ink-jet ink comprising a pigment and a resinous dispersing agent, wherein the resinous dispersing agent is a vinyl copolymer having an acid value of 50 mg KOH/g or higher and a solubility of at most 3% by mass in an alkaline solution containing KOH in an amount 1.5 times as much as the acid value, and the viscosity characteristic of the ink as measured by means of a viscoelastometer satisfies the following relationship:in-line-formulae description="In-line Formulae" end="lead"?1.1≦(Viscosity of an ink as measured under conditions of 20° C. and a shear rate of 0.5 sec−1)/(Viscosity of an ink as measured under conditions of 20° C. and a shear rate of 100 sec−1)≦2.0.in-line-formulae description="In-line Formulae" end="tail"?
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Cain Edward J.
Fitzpatrick ,Cella, Harper & Scinto
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