Homogenous ink composition
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United States of America Patent
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-
May 19, 1992
Grant Date -
N/A
app pub date -
Jan 7, 1991
filing date -
Jan 7, 1991
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A homogeneous ink for use in postage meter inking systems. The homogeneous ink is formulated by dissolving a coloring material composed of fluorescent toner in a non-volatile solution blend consisting of low molecular weight, low viscosity, non ionic surfactants with alcohol or ester terminal groups having an HLB number varying from 8 to 15 and glycols. Viscosity modifiers can be used as thinners and thickeners. A surface tension modifier compatible to the system of the polyether-alkl/polymethylsiloxane copolymers type can be added in trace concentrations. The ink components of this invention are all hazard free, non-hygroscopic and do not adversely affect the materials of the inking system in which they are used.
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