Patent ID: 6067433
Filing Date: 2000-05-23
Classification: G03G

Abstract:
A developing apparatus comprising:a developer bearing member opposed to an image bearing member to form a developing portion therebetween and adapted to rotate while bearing magnetic developer;a first magnetic pole and a second magnetic pole of a same polarity as that of said first magnetic pole, adjacent at the downstream side of said first magnetic pole with respect to the rotating direction of said developer bearing member, both provided in said developer bearing member; anda regulating member for regulating the amount of a developer on said developer bearing member;wherein a regulating portion of said regulating member is provided within a range from a point of a maximum magnetic flux density of said second magnetic pole to an angular point corresponding to a half of a half value width of said second magnetic pole at the downstream side of said point of the maximum magnetic flux density in the rotating direction of said developer bearing member.