A toner composition comprising a rosin-containing polyester
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United States of America Patent
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Nov 6, 1990
Grant Date -
N/A
app pub date -
Jul 19, 1988
filing date -
Jul 23, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
There are provided binder resins for use in toner compositions which comprise, as the main component thereof, a terminally blocked polyester in which the terminal hydroxyl groups of polyester polyol molecules are blocked by a rosin compound selected from the group consisting of rosin, hydrogenated rosin and disproportionated rosin and which has an acid value of not more than 4 KOH mg/g and a hydroxyl value of not more than 20 KOH mg/g as well as toner compositions comprising them in combination of a coloring agent and a charge control agent.
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