Patent ID: 7885565

Claim:
An image forming apparatus comprising: a development section that includes: a developer carrier that carries liquid developer containing toner liquid and carrier liquid; a developer supply member that supplies the liquid developer to the developer carrier; a developer carrier cleaning member that collects the liquid developer from the developer carrier; a collection reservoir that stores the liquid developer collected by the developer carrier cleaning member; a supply section that makes the liquid developer flow to the collection reservoir; and a conveyance member that conveys the liquid developer collected in the collection reservoir in a first direction; a conveyance capacity regulation section that regulates a conveyance capacity of the conveyance member; a latent image carrier that carries a latent image to be developed by the developer carrier; a charging section that electrically charges the latent image carrier; an exposure section that exposes the latent image carrier that is electrically charged by the charging section to light; a transfer member that transfers a developed image on the latent image carrier that is developed by the development section; an image information detection section that detects image information; and a concentration determination section of liquid developer that determines a toner concentration of the liquid developer collected by the developer carrier cleaning member according to an outcome of detection of the image information detection section.