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US 7,678,522 B2Granted
Toner, and developer, image forming method, image forming apparatus, and process cartridge using the toner
AssigneeRicoh Company, Ltd.
InventorsMinoru Nakamura, Chiyoshi Nozaki, Tsuyoshi Nozaki, Atsushi Yamamoto
Life of this patent
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Abstract
A toner is provided prepared by a wet granulation method, comprising a binder resin and a colorant, wherein the toner adsorbs ammonia (NH3) in an amount of from 70 to 400 μmol/m2 per unit of specific surface area and carbon dioxide (CO2) in an amount of not greater than 10 μmol/m2 per unit of specific surface area.
Claims20
A toner prepared by a wet granulation method, comprising:
- a binder resin;
- and
- a colorant,
- wherein the toner is a core-shell toner having a weight ratio of the shell to the core of not less the 0.05, and wherein the toner adsorbs ammonia (NH3) in an amount of from 70 to 400 μmol/m2 per unit of specific surface area and carbon dioxide (CO2) in an amount of not greater than 10 μmol/m2 per unit of specific surface area.
1 more element
Dependencies are inferred from the claim text.