18817616. DEVELOPING APPARATUS (CANON KABUSHIKI KAISHA)

DEVELOPING APPARATUS

Organization Name

CANON KABUSHIKI KAISHA

Inventor(s)

TOMOYUKI Sakamaki of Tokyo JP

DEVELOPING APPARATUS

This abstract first appeared for US patent application 18817616 titled 'DEVELOPING APPARATUS

Original Abstract Submitted

A first maximum position where a magnetic flux density of a first magnetic pole is maximum is positioned downstream of a first developing position and upstream of a first closest position. A second maximum position where a magnetic flux density of a third magnetic pole is maximum is positioned downstream of a second closest position and upstream of a second developing position. A relationship of r1×θ1>r2×θ2 is satisfied, in a case where r1 represents a radius of a first rotatable developing member, r2 represents a radius of a second rotatable developing member, θ1 represents an angle from the first maximum position to the first closest position in the rotational direction of the first rotatable developing member, and θ2 represents an angle from the second closest position to the second maximum position in the rotational direction of the second rotatable developing member.