Toner
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United States of America Patent
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May 12, 2015
Grant Date -
Apr 17, 2014
app pub date -
May 17, 2012
filing date -
May 18, 2011
priority date (Note) -
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status (Latency Note)
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Abstract
Provided is a toner having high charging rapidity to reach a sufficient charging amount in a short time, high stability of charging from the initial stage to a time when a large amount of sheets is printed out, and high stability of charging under a high temperature and high humidity. In a toner including toner particles, each of which contains at least a binder resin, a colorant, and a charge controlling resin, the charge controlling resin is a copolymer of a structure A having at least a specific salicylic acid derivative structure and a structure B having sulfonic acid or sulfonic acid ester as a substituent.
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