Electrostatographic particulate toner and developer compositions

Radiation imagery chemistry: process – composition – or product th – Electric or magnetic imagery – e.g. – xerography,... – Post imaging process – finishing – or perfecting composition...

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430137, G03G 900, G03G 500

Patent

active

050099795

ABSTRACT:
A toner composition comprised of resin particles, colorant material and an effect change controlling amount of at least one charge enhancing additive of the formula: ##STR1## wherein R.sub.1 and R.sub.2 are lower alkyl groups having 1 to 4 carbon atoms; R.sub.3 is a straight-chain alkylene group having from 1 to about 8 carbon atoms; and R.sub.4 is an alkyl group having from about 7 to about 24 carbon atoms.
The toners of the present invention are resistant to smearing after fusing onto a suitable substrate, provide good adhesion of the fused image to the substrate, and provide uniform, stable, high net electrical charge on toner particles and work over a wide range of relative humidity.

REFERENCES:
patent: 4256824 (1981-03-01), Lu
patent: 4291112 (1981-09-01), Lu
patent: 4323634 (1982-04-01), Jadwin
patent: 4490455 (1984-12-01), Hoffend et al.
patent: 4683188 (1987-07-01), Suzuki et al.
patent: 4780553 (1988-10-01), Suzuki et al.

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