Electrostatographic toner containing magenta pigment
First Claim
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1. A dry, particulate electrostatographic toner composition comprising a binder polymer having mixed therewith a magenta pigment which is a coordination complex of a divalent or trivalent metal ion and a 6-arylazo-3-pyridinol compound having the structure:
- ##STR3## wherein R is selected from the group consisting of OH;
NH2 ; and
an alkyl group containing from 1 to about 6 carbon atoms;
R1 is selected from the group consisting of hydrogen;
an alkyl group having 1 to about 6 carbon atoms;
acyl;
aryl;
aralkyl;
alkylsulfonyl;
amino;
alkoxy;
halogen;
morpholino;
phenylsulfamoyl;
sulfonamido;
sulfamoyl;
carboxy and sulfo; and
hydrolyzable precursors thereof; and
R2 is a complex-forming substituent selected from the group consisting of COOH;
a hydrolyzable ester group of the formula COOR3 wherein R3 is an alkyl group having from 1 to about 8 carbon atoms or an aryl group having 6 to about 10 carbon atoms; and
sulfamoyl having the formula SO2 NHR4 wherein R4 is hydrogen, alkyl having 1 to about 8 carbon atoms, aryl having 6 to about 10 carbon atoms or carbacyl having 1 to about 8 carbon atoms;
said toner having an average particle size within the range of from about 0.1 to about 100 microns.
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Abstract
Electrostatographic toner materials containing a magenta pigment which is a metal coordination complex of a substituted 6-arylazo-3-pyridinol compound are disclosed. These pigments are formulated with fusible polymeric binders to provide a toner which exhibits excellent triboelectric properties and improved magenta color and hue when utilized in the electrostatographic process to produce colored electrophotographic images.
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Citations
21 Claims
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1. A dry, particulate electrostatographic toner composition comprising a binder polymer having mixed therewith a magenta pigment which is a coordination complex of a divalent or trivalent metal ion and a 6-arylazo-3-pyridinol compound having the structure:
- ##STR3## wherein R is selected from the group consisting of OH;
NH2 ; and
an alkyl group containing from 1 to about 6 carbon atoms;R1 is selected from the group consisting of hydrogen;
an alkyl group having 1 to about 6 carbon atoms;
acyl;
aryl;
aralkyl;
alkylsulfonyl;
amino;
alkoxy;
halogen;
morpholino;
phenylsulfamoyl;
sulfonamido;
sulfamoyl;
carboxy and sulfo; and
hydrolyzable precursors thereof; andR2 is a complex-forming substituent selected from the group consisting of COOH;
a hydrolyzable ester group of the formula COOR3 wherein R3 is an alkyl group having from 1 to about 8 carbon atoms or an aryl group having 6 to about 10 carbon atoms; and
sulfamoyl having the formula SO2 NHR4 wherein R4 is hydrogen, alkyl having 1 to about 8 carbon atoms, aryl having 6 to about 10 carbon atoms or carbacyl having 1 to about 8 carbon atoms;said toner having an average particle size within the range of from about 0.1 to about 100 microns. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
- ##STR3## wherein R is selected from the group consisting of OH;
Specification