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.

 
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< Variable optical attenuator having a waveguide and an optically coupled layer with a power monitor

> Subcutaneous implantable cardioverter-defibrillator employing a telescoping lead

> Semiconductor laser and method for manufacturing the same
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