Toner binder and toner
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United States of America Patent
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Sep 5, 2017
Issued Date -
N/A
app pub date -
Jul 22, 2014
filing date -
Jul 23, 2013
priority date (Note) -
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Abstract
A toner binder comprising a polyester, the end of which is partially esterified with a monocarboxylic acid and/or a monohydric alcohol, the polyhydric alcohol component of which comprises a C3 alkylene glycol (a21) and an aromatic-ring-bearing diol (a22) at an (a21)/(a22) molar ratio of 5/95 to 70/30, and which has an ester group concentration of 16 to 30 wt % and satisfies a specific relationship between the ester group concentration and the hydroxy value. The toner binder combines low-temperature fixability and storage stability under high-temperature conditions or heat-temperature and -humidity conditions, and exhibits excellent durability.
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