Charge control agent and toner comprising the same
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United States of America Patent
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May 17, 2011
Grant Date -
Oct 16, 2008
app pub date -
Jan 10, 2008
filing date -
Apr 12, 2007
priority date (Note) -
Expired
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Abstract
This invention teaches a charge control agent and a toner containing such a charge control agent. It solves the problem in current toner processing technique of inadequate electrification, unequal quantity of electricity, spreading and bottom ash. The charge control agent comprising metal complex of tannin acid in which metal atoms have 2 to 4 valences and tannin acid as coordination sub structure. The toners mentioned above at least contains resin, dyestuff and charge control agent of the invention. The powered carbon specializes in excellence in electrification, environment influence retardant. It can obtain stable and high definition image without spreading and bottom ash troubling.
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