Particulate toner material containing charge controlling compound
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United States of America Patent
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-
Feb 23, 1993
Grant Date -
N/A
app pub date -
Aug 13, 1991
filing date -
Aug 22, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Particulate toner material for use in the development of latent electrostatic images, wherein said particulate toner material is capable of acquiring by triboelectric contact electrification a net negative charge and contains thermoplastic resin(s) as binder in combination with a colorant and a compound capable of imparting a negative charge to the particulate toner material in contact electrification, wherein the latter compound is an anthranilic acid derivative comprising a sulfonamido-group.
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