Toner and process for producing toner
AssigneeZeon Corporation
InventorsTakuji Kishimoto, Rieko Takahara
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Abstract
A toner containing a binder resin, a colorant, a charge control agent, and a thiazolyl disulfide compound or a thiuram disulfide compound. A process for producing a toner comprising polymerization of a polymerizable monomer composition that contains a polymerizable monomer and a colorant in an aqueous medium in the presence of a compound selected from a group consisting of (1) a thiazol thio compound, (2) a thiuram compound and (3) a dithiocarbamate compound.
Claims18
A toner containing a binder resin, a colorant, a charge control agent, and a thiazolyl disulfide compound or a thiuram disulfide compound.
A process for producing a toner comprising polymerization of a polymerizable monomer composition which contains a polymerizable monomer and a colorant in an aqueous medium in the presence of compound A selected from a group consisting of (1) a thiazol thio compound, (2) a thiuram compound and (3) a dithiocarbamate compound.
A process for producing a toner comprising polymerization of a polymerizable monomer composition which contains a polymerizable monomer, a colorant, a charge control agent and compound A selected from a group consisting of (1) a thiazol thio compound, (2) a thiuram compound and (3) a dithiocarbamate compound in an aqueous dispersing medium containing a dispersion stabilizer.
A process for producing a toner comprising polymerization of a polymerizable monomer composition which contains 100 parts by weight of a polymerizable monomer, 1 to 10 parts by weight of a colorant, 0.01 to 20 parts by weight of a charge control agent, and 0.01 to 10 parts by weight of compound A selected from a group consisting of (1) a thiazol thio compound, (2) a thiuram compound and (3) a dithiocarbamate compound in an aqueous dispersing medium containing a dispersion stabilizer.
A process for producing a toner of a core-shell structure comprising steps of:
- producing core particles by suspending a polymerizable monomer composition for the core which contains a polymerizable monomer, a colorant, a charge control agent, and compound A selected from a group consisting of (1) a thiazol thio compound, (2) a thiuram compound and (3) a dithiocarbamate compound in an aqueous dispersing medium containing a dispersion stabilizer and then polymerizing said monomer composition with a polymerization initiator;
- and further adding a polymerizable monomer for the shell and a polymerization initiator to polymerize said monomer.
Dependencies are inferred from the claim text.