Elektrofotografischer Entwickler, Elektrofotografisches Bilderzeugungsverfahren, Elektrofotografische Bilderzeugungsvorrichtung und Prozesskartusche

Details

Veröffentlichungs-Nr.

EP4617781

Aktenzeichen

EP25162009

Anmeldetag

6. März 2025

Veröffentlichung

17. September 2025

Rechtsraum

EP

IPC

G03G9/087G03G9/10G03G9/113

Abstract

An electrophotographic developer is provided that includes a carrier and a pulverized toner. The carrier includes a core material particle and a coating layer coating the core material particle, and has an internal void ratio of 0.0% or more and less than 2.0%. The pulverized toner includes a polyester resin, an aromatic petroleum resin, and a hydrocarbon wax, and an addition amount of the aromatic petroleum resin is 2 parts by mass or more and 15 parts by mass or less with respect to 100 parts by mass of the pulverized toner.

Anmelder

Firma

Ricoh Company, Ltd.

Land

🇯🇵 Japan

Fachgebiete