| http://www.w3.org/ns/prov#value | - In another embodiment, the present invention is directed to toners with metal charge enhancing additives, which additives can be obtained, for example, from the reaction of a metal ion, such as aluminum or zinc ion with an ortho-hydroxyphenol, and an aromatic carboxylic acid in the presence of an appropriate base such as potassium hydroxide.
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