Electrographic toner and developer composition containing a 4-aza-1-azoniabicyclo(2.2.2) octane salt as a charge control agent
AssigneeEastman Kodak Company
InventorsDonald MacArthur Burness, Thomas Karl Dykstra, Thomas Arthur Jadwin, Hans Gway Ling
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Abstract
The present invention relates to the use of 4-aza-1-azoniabicyclo(2.2.2)octane salts as charge control agents for an electrostatic toner contained in dry electrographic developer compositions. These charge control agents preferably have the formula ##STR1## wherein R is an aliphatic organic group having from 4 to about 30 carbon atoms, and X is an anion.
Claims12
A dry, particulate electrostatic toner containing particles having a particle size of from about 0.1 micron to about 100 microns, said particles having a composition comprising a polymeric binder having a softening temperature within the range of from about 40.degree. C to about 200.degree. C and a material having the formula:
- ##STR4## wherein R is an aliphatic organic group having from 4 to about 30 carbon atoms, and
- X is an anion.
A dry, particulate electrostatic toner containing particles having a particle size of from about 0.1 micron to about 30 microns, said particles having a composition comprising (a) a polymeric binder having a softening temperature within the range of from about 40.degree. C to about 200.degree. C, (b) a pigment or dyestuff in an amount effective to color said particles, and (c) a material having the following formula:
- ##STR5## wherein R is an aliphatic organic group having from 4 to about 30 carbon atoms, and
- X is an anion.
A dry, particulate electrostatic toner containing particles having a particle size of from about 0.1 micron to about 30 microns, said particles having a composition comprising (a) a styrene-containing polymeric binder, (b) a pigment or dyestuff in an amount effective to color said particles, and (c) an amount within the range of from about 0.001 to about 3 percent by weight of said particles of a material having the following formula:
- ##STR6## wherein R is an aliphatic organic group having from 4 to about 30 carbon atoms, and
- X is an anion.
An electrographic developer composition comprising magnetic carrier particles having a particle size within the range of from about 30 to about 1200 microns and having electrostatically attractable thereto a dry, particulate electrostatic toner containing particles having a particle size of from about 0.1 micron to about 30 microns, said toner particles having a particle composition comprising (a) a polymeric binder having a softening temperature within the range of from about 40.degree. C to about 200.degree. C, (b) a pigment or dyestuff in an amount effective to color said toner particles, and (c) a material having the following formula:
- ##STR7## wherein R is an aliphatic organic group having from 4 to about 30 carbon atoms, and
- X is an anion.
Dependencies are inferred from the claim text.