Patent ID: 7869745

Claim:
A developing device comprising: a developer carrying body that carries liquid developer containing toner and carrier liquid; a developer supplying member adapted to rotate in a first direction of rotation to supply liquid developer to the developer carrying body; a contact member arranged at a first side relative to a virtual perpendicular plane passing through the axis of the developer supplying member so as to contact the developer supplying member; a supply section that stores liquid developer to be supplied by the developer supplying member to the developer carrying body; an agitating member that allows the liquid developer to flow from an axial center to the axial end section of the developer supplying member by rotating in a second direction of rotation different from the first direction of rotation and arranged at a second side relative to the virtual perpendicular plane passing through the axis of the developer supplying member; a developer carrying body cleaning member for cleaning the developer carrying body and that is arranged at the second side; a collecting section for collecting the liquid developer collected by the developer carrying body cleaning member and that is arranged at the second side; and a wall section that partitions the supply section from the collecting section, adjusts a liquid level of liquid developer stored in the supply section, allows the liquid developer stored in the supply section to flow from the supply section to the collecting section, and includes a high wall section having a first height in a perpendicular plane, and a low wall section having a second height lower than the first height arranged at an axial end section of the developer supplying member.