Hard carrier particles coated with a polymer resin and a conductive material
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United States of America Patent
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-
Sep 30, 2003
Grant Date -
May 31, 2001
app pub date -
Jun 12, 1998
filing date -
Sep 28, 1995
priority date (Note) -
In Force
status (Latency Note)
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Abstract
There is provided a carrier, for an electrcostatographic developer, comprising particles of a hard magnetic ferrite material as the core, the core having a coating of a polymer resin, said resin in turn having a coating of an organic conductive material. The organic conductive material can be a charge control agent and can be present in very small amounts. The developer compositions have no need for preconditioning since they have stable charging characteristics. Further, they exhibit low levels of 'dusting'.
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