Entwicklungsvorrichtung und Bilderzeugungsvorrichtung damit

Details

Veröffentlichungs-Nr.

EP4730043

Anmeldetag

14. Oktober 2025

Veröffentlichung

22. April 2026

Rechtsraum

EP

IPC

G03G15/08, G03G15/09

Abstract

A magnet member (20b) is non-rotatably secured inside a developing sleeve (20a), and includes a plurality of magnetic poles (N1, S1, N2, ...) arranged along a rotation direction of the developing sleeve (20a). The magnetic poles (N1, S1, N2, ...) include a main pole (S1) facing the image carrying member (1a), and a peeling pole (N3) that is disposed downstream of and adjacent to the main pole (S1) in the rotation direction of the developing sleeve (20a) and that peels off the developer carried on the developer carrying member (20). A magnetic-flux-density peak-position of the main pole (S1) is located below a horizontal line (L1) passing through a rotation center (P3) of the developing sleeve (20a), and as viewed from an axial direction, an angle that a line (L2) extending from the magnetic-flux-density peak-position of the main pole (S1) to the rotation center (P3) of the developing sleeve (20a) forms with respect to the horizontal line (L1) passing through the rotation center of the developing sleeve is 40° or larger but 80° or smaller.

Anmelder

Firma

KYOCERA Document Solutions Inc.

Land

🇯🇵 Japan