Electrographic toner and developer composition

Claim 2

A DRY PARTICULATE ELECTROSCOPIC TONER COMPOSITION FOR USE IN DEVELOPING ELECTROSTATIC CHARGE PATTERNS COMPRISING FINELYDIVIDED PARTICLES COMPRISING A RESIN INCORPORATED THEREIN A QUATERNARY AMMONIUM CHARGE CONTROL AGENT HAVING THE FOLLOWING FORMULA:

Claim 3

A dry particulate electroscopic toner composition for use in developing electrostatic charge patterns comprising finely-divided particles having a particle size of from about 0.1 micron to about 100 microns, said particles comprising a resin having a melting point within the range of from about 65* to about 200*C. and having incorporated in said resin a quaternary ammonium charge control agent having the following formula:

Claim 4

A dry particulate electroscopic toner composition for use in developing electrostatic charge patterns comprising finely-divided particles having a particle size of from about 0.1 micron to about 100 microns, said particles comprising a resin having a melting point within the range of from about 65* to about 200*C. and having incorporated in said resin a quaternary ammonium charge control agent having the following formula:

Claim 5

The invention as described in claim 2 wherein said toner composition comprises a pigment or a dyestuff in an amount effective to color said toner composition.

Claim 6

A dry particulate electroscopic toner composition for use in developing electrostatic charge patterns comprising finely-divided particles having a particle size of from about 1.0 to about 30 microns, said particles comprising a styrene-containing resin having a melting point within the range of from about 65*C. to about 120*C. and having incorporated in said resin (a) a pigment or dyestuff in an amount effective to color said resin and (b) a quaternary ammonium charge control agent having the following formula:

Claim 7

A dry particulate electroscopic toner composition for use in developing electrostatic charge patterns comprising finely-divided particles having a particle size of from about 1.0 to about 30 microns, said particles comprising a styrene-containing resin having a melting point within the range of from about 65*C. to about 120*C. and having incorporated in said resin (a) a pigment or dyestuff in an amount effective to color said resin and (b) a quaternary ammonium charge control agent having the following formula:

Claim 8

The invention as described in claim 4 wherein R1, R2, R3 and R4 represent an alkyl group having from 1 to about 7 carbon atoms and wherein X is an anionic function selected from the group consisting of halides, phosphates, acetates and nitrates.

Claim 9

The invention as described in claim 4 wherein R1, R2, R3, and R4 are straight-chain alkyl groups having from about 3 to about 7 carbon atoms and wherein X is a halide.

Claim 10

The invention as described in claim 4 wherein R1, R2, R3, and R4 are straight-chain alkyl groups having from about 3 to about 7 carbon atoms and wherein X is a chloride.

Claim 11

A dry particulate electroscopic toner composition for use in developing electrostatic charge patterns comprising finely-divided particles of from about 0.1 micron to about 100 microns, said particles comprising a polycarbonate-containing resin having a glass transition temperature within the range of from about 60*C. to about 120*C. and having incorporated in said resin (a) a dyestuff or pigment in an amount effective to color said resin and (b) a quaternary ammoniUm charge control agent having the following formula:

Claim 12

A dry particulate electroscopic toner composition for use in developing electrostatic charge patterns comprising finely-divided particles of from about 0.1 micron to about 100 microns, said particles comprising a polycarbonate-containing resin having a glass transition temperature within the range of from about 60*C. to about 120*C. and having incorporated in said resin (a) a dyestuff or pigment in an amount effective to color said resin and (b) a quaternary ammoniUm charge control agent having the following formula:

Claim 13

The invention as described in claim 8 wherein R1, R2, R3 and R4 represent an aliphatic group having from 1 to about 7 carbon atoms and wherein X is an anionic function selected from the group consisting of halides, phosphates, acetates and nitrates.

Claim 14

The invention as described in claim 8 wherein R1, R2, R3 and R4 represent an alkyl group having from about 3 to about 7 carbon atoms and wherein X is a halide.

Claim 15

A dry particulate electroscopic toner composition for use in developing electrostatic charge patterns comprising finely-divided particles of from about 1.0 to about 30 microns, said particles comprising a styrene-containing resin having a melting point within the range of from about 65*C. to about 120*C., said resin containing from about 40 to about 100 percent by weight of styrene units, from 0 to about 45 percent by weight of alkyl acrylate or alkyl methacrylate units having from 1 to about 3 carbon atoms in the alkyl moiety, and from about 5 to about 50 percent by weight of alkyl acrylate or alkyl methacrylate units having from about 6 to about 20 carbon atoms in the alkyl moiety, said resin having incorporated therein (a) a pigment or dyestuff in an amount effective to color said resin and (b) a quaternary ammonium charge control agent having the following formula:

Claim 16

A dry particulate electroscopic toner composition for use in developing electrostatic charge patterns comprising finely-divided particles of from about 1.0 to about 30 microns, said particles comprising a styrene-containing resin having a melting point within the range of from about 65*C. to about 120*C., said resin containing from about 40 to about 100 percent by weight of styrene units, from 0 to about 45 percent by weight of alkyl acrylate or alkyl methacrylate units having from 1 to about 3 carbon atoms in the alkyl moiety, and from about 5 to about 50 percent by weight of alkyl acrylate or alkyl methacrylate units having from about 6 to about 20 carbon atoms in the alkyl moiety, said resin having incorporated therein (a) a pigment or dyestuff in an amount effective to color said resin and (b) a quaternary ammonium charge control agent having the following formula:

Claim 17

The invention as described in claim 11 wherein R1, R2, R3 and R4 represent an aliphatic group having from 1 to about 7 carbon atoms and wherein X is an anionic function selected from the group consisting of halides, acetates, phosphates, and nitrates.

Claim 18

The invention as described in claim 11 wherein said particles contain carbon black as a pigment.

Claim 19

The invention as described in claim 11 wherein R1, R2, R3 and R4 represent an alkyl group having from about 3 to about 7 carbon atoms and wherein X is a halide.

Claim 20

An electrographic developing composition comprising particulate magnetic carrier particles having electrostatically attractable thereto a toner composition as described in claim 1.

Claim 21

An electrographic developer composition comprising ferromagnetic carrier particles having a particle size within the range of from about 30 to about 1200 microns and having electrostatically attractable thereto dry, finely-divided toner particles having a particle size within the range of about 1.0 to about 30 microns, said toner particles comprising a resin having a melting point within the range of from about 65* to about 200*C. and having incorporated in said resin (a) a dyestuff or pigment in an amount effective to color said resin and (b) a quaternary ammonium charge control agent having the following formula:

Claim 22

An electrographic developer composition comprising ferromagnetic carrier particles having a particle size within the range of from about 30 to about 1200 microns and having electrostatically attractable thereto dry, finely-divided toner particles having a particle size within the range of about 1.0 to about 30 microns, said toner particles comprising a resin having a melting point within the range of from about 65* to about 200*C. and having incorporated in said resin (a) a dyestuff or pigment in an amount effective to color said resin and (b) a quaternary ammonium charge control agent having the following formula:

Claim 23

The invention as described in claim 16 wherein said resin is a styrene-containing resin having a melting point within the range of about 65* to about 120*C. and wherein said toner particles comprise carbon black as a pigment.

Claim 24

The invention as described in claim 16 wherein said resin is a poly(carbonate)-containing resin having a glass transition temperature within the range of from about 60* to about 120*C. and wherein said toner particles comprise carbon black as a pigment.