Patent ID: 8318400
Filing Date: 2012-11-27
Classification: G03G

Abstract:
1. A method of preparing a toner, comprising: periodically discharging a toner constituent liquid from plural nozzles having the same aperture diameter with a mechanical oscillator, wherein the toner constituent liquid comprises: a binder resin, wherein the binder resin has a peak molecular weight of from 6,000 to 50,000 in a molecular weight distribution measured by GPC of THF-soluble components thereof, a colorant, and an organic solvent, wherein the colorant is dissolved or dispersed in the organic solvent, wherein the binder resin is completely dissolved in the organic solvent; forming a droplet of the toner constituent liquid in a gas phase; and solidifying the droplet, wherein the aperture diameter is from 3 to 30 μm, and the binder resin has a ratio (Mw/Mn) of a weight-average molecular weight (Mw) to a number-average molecular weight (Mn) of THF(tetrahydrofuran)-soluble components therein of from 1.5 to 15 in a molecular weight distribution measured by GPC (gel permeation chromatography), and a ½ flow temperature (Tm) of from 114 to 149° C.