Toner and image forming method
AssigneeZeon Corporation
InventorsTakeshi Hirata, Sakyo Yagyu
Life of this patent
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Abstract
A toner comprising colored resin particles, which contain a binder resin, a colorant, a positively-chargeable charge control resin and a release agent, and an external additive, wherein the positively-chargeable charge control resin comprises a copolymer A, which contains a functional group-containing monomer unit in an amount of 1.50% by mass or more and 6.00% by mass or less, and a copolymer B, which contains a functional group-containing monomer unit in an amount of 0.10% by mass or more and less than 1.50% by mass, and wherein the colored resin particles further contain a polar resin having an acid value of 0.5 mgKOH/g or more and 8.0 mgKOH/g or less.
Claims12
A toner comprising colored resin particles, which contain a binder resin, a colorant, a positively-chargeable charge control resin and a release agent, and an external additive,
- wherein the positively-chargeable charge control resin comprises a copolymer A, which contains a functional group-containing monomer unit in an amount of 1.50% by mass or more and 6.00% by mass or less, and a copolymer B, which contains a functional group-containing monomer unit in an amount of 0.10% by mass or more and less than 1.50% by mass, and
- wherein the colored resin particles further contain a polar resin having an acid value of 0.5 mgKOH/g or more and 8.0 mgKOH/g or less.
A toner comprising colored resin particles, which contain a binder resin, a colorant, a positively-chargeable charge control resin and a release agent, and an external additive,
- wherein the positively-chargeable charge control resin comprises a copolymer A, which contains a functional group-containing monomer unit in an amount of 1.50% by mass or more and 6.00% by mass or less, and a copolymer B, which contains a functional group-containing monomer unit in an amount of 0.10% by mass or more and less than 1.50% by mass, and
- wherein the colored resin particles further contain a polar resin having an acid value of 0.5 mgKOH/g or more and 5.0 mgKOH/g or less.
Dependencies are inferred from the claim text.