| http://www.w3.org/ns/prov#value | - In embodiments, the calcium is added into at least the surface of the toner in an amount of from about 20 ppm to about 300 ppm of calcium to the dry weight of the toner, for example from about 100 ppm to about 300 ppm of calcium to the dry weight of the toner, and such as from about 20 ppm to about 100 ppm of calcium to the dry weight of the toner.
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