Metal complexes for use in developers for electrostatic images, charge control function
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United States of America Patent
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Sep 13, 1983
Grant Date -
N/A
app pub date -
Dec 11, 1981
filing date -
Dec 22, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A complex system for developing electrostatic images, and particularly a toner which contains a metal complex represented by the formula ##STR1## wherein a or b is a benzene ring moiety or cyclohexene ring moiety with or without C.sub.4 -C.sub.9 alkyl substituents, R.sub.1 and R.sub.2 are each hydrogen, C.sub.4 -C.sub.9 alkyl or a substituent which may be in the form of a benzene ring moiety or cyclohexene ring moiety with or without C.sub.4 -C.sub.9 alkyl substituents, provided that both R.sub.1 and R.sub.2 are not hydrogen at the same time, Me is Cr, Co or Fe, and X is a counter ion such as hydrogen or sodium. The metal complex has good compatibility with the resin component of the toner and is substantially colorless, imparting outstanding durability to the toner.
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