Black toner for developing latent electrostatic image and method for producing the same
OwnerKei Yokokawa, Yasuaki Iwamoto +1inventors
InventorsKei Yokokawa, Yasuaki Iwamoto, Takahiro Kadota
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Abstract
A black toner for developing a latent electrostatic image, including: a toner base containing a pigment, a binder resin, a releasing agent, a compound containing fluorine and a compound containing sulfur; and an external additive, wherein the toner contains the external additive on a surface of the toner base, and wherein an amount of the fluorine in the toner base is 200 ppm by mass to 600 ppm by mass as measured by combustion-ion chromatography, and an amount of the sulfur in the toner base is 1,000 ppm by mass to 1,500 ppm by mass as measured by the combustion-ion chromatography.
Claims10
A black toner for developing a latent electrostatic image, comprising:
- a toner base, which comprises a pigment, a binder resin, a releasing agent, a compound containing fluorine, and a compound containing sulfur;
- and
- an external additive,
- wherein the toner comprises the external additive on a surface of the toner base, and
- wherein an amount of the fluorine in the toner base is 200 ppm by mass to 600 ppm by mass as measured by combustion-ion chromatography, and an amount of the sulfur in the toner base is 1,000 ppm by mass to 1,500 ppm by mass as measured by the combustion-ion chromatography.
Dependencies are inferred from the claim text.