Back to results
US 7,396,625 B2Granted
Toner, method for producing the same, and image-forming method using the same
AssigneeRicoh Company, Ltd.
InventorsChiaki Tanaka, Masayuki Ishii
Life of this patent
Estimating the term…
Abstract
To provide a method for producing a toner in which at least monomers are polymerized in at least one of a supercritical fluid and a subcritical fluid to thereby produce toner particles, wherein at least one of the supercritical fluid and the subcritical fluid contains a fluorine-containing surfactant, and a polymer resulted from polymerization of the monomers is insoluble in at least one of the supercritical fluid and the subcritical fluid, and provide a toner produced by the method for producing the toner.
Claims13
A method for producing a toner comprising:
- polymerizing at least monomers in at least one of a supercritical fluid and a subcritical fluid to thereby produce toner particles,
- wherein at least one of the supercritical fluid and the subcritical fluid comprises a fluorine-containing surfactant,
- wherein a polymer resulted from polymerization of the monomers is insoluble in at least one of the supercritical fluid and the subcritical fluid,
- wherein the fluorine-containing surfactant is a compound comprising a unit represented by the General Formula (1):
- where R1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, R2 represents a substituted or unsubstituted alkylene group having 1 to 4 carbon atoms, and Rf represents a perfluoroalkyl group having 1 to 20 carbon atoms.
2 more elements
Dependencies are inferred from the claim text.