Method for producing toner

Abstract

A method for producing a toner includes collecting a toner by using a toner collecting device including: a centrifugation cylinder to which an airflow containing a toner is introduced and in which the toner is centrifugally separated by a swirling flow caused by the introduced airflow; an airflow inlet through which the airflow containing the toner is introduced to the centrifugation cylinder; an airflow outlet that is located at an upper end of the centrifugation cylinder and through which the airflow from which the toner has been separated in the centrifugation cylinder is discharged; a toner collector that is located at a lower end of the centrifugation cylinder and in which the toner separated in the centrifugation cylinder is collected; and a suction unit that suctions the inside of the centrifugation cylinder through the toner collector and has a filtration filter through which the toner in the suctioned airflow is filtered out. The ratio of a suction quantity QBD (m3/min) of the airflow suctioned by the suction unit to an introduction quantity Qin (m3/min) at which the airflow containing the toner is introduced to the centrifugation cylinder is more than 0% and 30% or less. The ratio of a filtration area (m2) of the filtration filter to the suction quantity QBD (m3/min) of the airflow suctioned by the suction unit is 0.4 or more and 4.0 or less.

Dependencies are inferred from the claim text.