A development device includes a developer carrier 20Y that carries liquid developer containing toner liquid and carrier liquid, a developer supply member 32Y that supplies liquid developer to the developer carrier 20Y, a developer carrier cleaning member 21Y that collects liquid developer from the developer carrier 20Y, a collection reservoir 31bY that stores the liquid developer collected by the developer carrier cleaning member 21Y, a supply section 31aY that makes liquid developer flow to the collection reservoir 31bY, a conveyance member 34Y that conveys the liquid developer collected in the collection reservoir 31bY in a first direction X and a conveyance capacity regulation section 100 that regulates the conveyance capacity of the conveyance member 34Y.