Method of preparing toner and toner prepared thereby
OwnerHiroshi YAMADA, Akinori Saitoh +1inventors
InventorsHiroshi YAMADA, Akinori Saitoh, Masahide Yamada
Life of this patent
Estimating the term…
Loading patent…
OwnerHiroshi YAMADA, Akinori Saitoh +1inventors
InventorsHiroshi YAMADA, Akinori Saitoh, Masahide Yamada
Estimating the term…
A method of preparing a toner, including dissolving toner constituents including a binder resin or a binder resin precursor, a colorant and a release agent in an organic solvent to prepare a first liquid; emulsifying the first liquid in an aqueous medium to prepare a second liquid having a viscosity of from 50 to 800 mPa·sec; and at least flowing the second liquid almost vertically down along the wall surface of a pipe in which the air pressure is depressurized to 70 kPa or less twice while keeping a temperature of the second liquid not higher than a Tg of the parent particle through the wall surface thereof to volatilize the organic solvent, wherein a solid content of a slurry after volatilized is from 15 to 50%, and a ratio of the solid content to a solid content of a slurry before volatilized is from 1.05 to 2.00.
A method of preparing toner having a parent particle, comprising:
Dependencies are inferred from the claim text.