A developing device includes a developer carrier and a developer regulating member
including a developer regulating part opposing a surface of the developer carrier
to regulate the developer carried and conveyed by the developer carrier. The developer
regulating member is formed from a single metallic member and includes a space
that faces an inner surface of the metallic member. The space extends in a direction
perpendicular to a moving direction of the surface of the developer carrier. The
developing device can include a cooling device that cools the developer regulating
member from an inner surface side of the metallic member facing the space.
