METHOD FOR PRODUCING ELECTROSTATIC CHARGE IMAGE DEVELOPING TONER

Disclosed is a method for producing an electrostatic charge image developing toner, including: drying wet toner base particles to produce the electrostatic charge image developing toner. The toner base particles contain an amorphous polyester that is a polycondensate of a polyvalent carboxylic acid...

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Hauptverfasser: ISHIKAWA, Michiaki, ARAI, Keiji, ONISHI, Junya, TAKIGAURA, Yusuke, NAKAI, Yukiko
Format: Patent
Sprache:eng
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Zusammenfassung:Disclosed is a method for producing an electrostatic charge image developing toner, including: drying wet toner base particles to produce the electrostatic charge image developing toner. The toner base particles contain an amorphous polyester that is a polycondensate of a polyvalent carboxylic acid and a polyhydric alcohol. In the amorphous polyester, a content of a structural unit derived from bisphenol A or a bisphenol A derivative is 10 mol % or less with respect to total moles of a structural unit derived from the polyhydric alcohol. The drying comprises drying the wet toner base particles with an airflow in a dryer. A temperature of the airflow is equal to or higher than 60° C. A velocity of the airflow is greater than or equal to 5 m/sec.