Entwicklungsvorrichtung und Bilderzeugungsvorrichtung

Details

Veröffentlichungs-Nr.

EP4752637

Anmeldetag

16. Mai 2025

Veröffentlichung

3. Juni 2026

Rechtsraum

EP

IPC

G03G13/09, G03G15/09

Abstract

A developing device includes a rotating member that is formed in a tubular shape, that is provided to be rotatable, that includes one end portion and the other end portion, and that includes an outer peripheral surface to which a developer adheres, plural magnetic poles that are disposed inside the rotating member and that are disposed to be arranged in a rotation direction of the rotating member, a first magnetic member that is disposed outside the rotating member, that is disposed at a position facing the one end portion of the rotating member, that includes a downstream-side end portion, which is an end portion positioned on a downstream side in the rotation direction of the rotating member, and that forms a magnetic field between the first magnetic member and the magnetic poles, and a second magnetic member that is disposed outside the rotating member, that is disposed at a position facing the one end portion of the rotating member, that is disposed to be closer to the other end portion of the rotating member than the first magnetic member is, that forms a magnetic field between the second magnetic member and the magnetic poles, and that includes a facing portion, which is a portion facing the rotating member, in which, in the rotation direction, the facing portion of the second magnetic member is positioned upstream of one of the plural magnetic poles that is positioned upstream of the downstream-side end portion of the first magnetic member in the rotation direction and that is a first magnetic pole counting from the downstream-side end portion.

Anmelder

Firma

FUJIFILM Business Innovation Corp.

Land

🇯🇵 Japan