Toner for developing electrostatically charged images
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United States of America Patent
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Issued Date -
Mar 4, 2010
app pub date -
Sep 3, 2009
filing date -
Sep 4, 2008
priority date (Note) -
Abandoned
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Abstract
Toner for developing electrostatically charged images contains at least a binder resin, a colorant and a charge control agent. The charge control agent is an aromatic compound generating at least sulfur dioxide and a butylphenol upon thermal decomposition by raising temperature from room temperature to 250° C. at 10° C./min; and is one of or a mixture of two or more of a substance having both an aromatic ring to which one or more tert-butyl groups are attached and an aromatic ring to which one or more sulfonyl groups are attached, a mixture comprising a substance having an aromatic ring to which one or more tert-butyl groups are attached and a substance having an aromatic ring to which one or more sulfonyl groups are attached, and a substance of a chemical structure including an aromatic ring to which both one or more tert-butyl groups and one or more sulfonyl groups are attached.
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