Developing device

摘要

A developing device and image forming apparatus are provided. The developing device includes a chassis; a developer carrying member; a thickness regulating member; a supply member; and a conveying member. In a state in which the developing device is attached to a main body an opening of the chassis faces upward; the thickness regulating member pressure-contacts the developer carrying member from below the developer carrying member; the conveying member is disposed below the developer carrying member; the supply member overlaps a portion of the conveying member in a horizontal direction; and a portion of the conveying member is disposed within a vertical projection plane between a pressure-contact position of the thickness regulating member to the developer carrying member, and a contact position of the supply member to the developer carrying member. The image forming apparatus includes a main body; a plurality of photosensitive members; and a plurality of developing devices.

主权项

1. A developing device detachably attachable to a main body of an image forming apparatus, the developing device comprising:
a casing; a developer carrying member configured to rotate and to carry developer; a thickness regulating member at least partially disposed inside the casing and configured to contact the developer carrying member and regulate a thickness of developer on the developer carrying member; a supply member disposed inside the casing and at least partially disposed below the developer carrying member, and configured to:
contact the developer carrying member;rotate; andcarry developer to the developer carrying member; a first developer moving member disposed inside the casing, at least partially disposed below the developer carrying member, and configured to rotate and move developer, the first developer moving member having a rotating axis disposed between a first imaginary vertical plane passing through a first contact portion, in which the thickness regulating member contacts the developer carrying member, and a second imaginary vertical plane passing through a second contact portion, in which the supply member contacts the developer carrying member; and a second developer moving member disposed inside the casing and configured to rotate and move developer, the second developer moving member having a rotating axis, a position of the rotating axis of the second developer moving member being lower than a position of the rotating axis of the first developer moving member.