Magnetischer Einkomponententoner und Bilderzeugungsvorrichtung damit

Details

Veröffentlichungs-Nr.

EP4749368

Anmeldetag

11. November 2025

Veröffentlichung

27. Mai 2026

Rechtsraum

EP

IPC

G03G9/08, G03G9/083, G03G9/087

Abstract

Magnetic one-component toner includes a toner base particle containing at least a binder resin and a magnetic powder and an external additive attached to its surface. The binder resin contains an amorphous polyester resin and a crystalline polyester resin containing an aliphatic diol with a carbon number of 3 or more but 9 or less. The amount of crystalline polyester resin added is 5 mass% or less relative to the amorphous polyester resin. Let Tg1 be the glass transition point measured using a differential scanning calorimeter when temperature is first raised and let Tg2 be the glass transition point measured when, after the Tg1 measurement, temperature is lowered and raised again, then Tg(45) and Tg(25), which are the values of Tg1 measured after standing still at 45°C and 25°C, respectively, for 100 hours, satisfy 0 < Tg2 - Tg(45) < 5 and 4 < Tg2 - Tg(25) < 10.

Anmelder

Firma

KYOCERA Document Solutions Inc.

Land

🇯🇵 Japan