Patent ID: 8452214
Filing Date: 2013-05-28
Classification: G03G

Abstract:
1. A developing apparatus that supplies liquid developer to an image supporting body, the developing apparatus comprising: a developer supply portion that supplies the liquid developer; a developer accumulation portion that accumulates the liquid developer supplied by the developer supply portion; a developer drawing-up portion that draws up the liquid developer accumulated in the developer accumulation portion; a developing roller that is disposed rotatably about a rotational axis and to face the image supporting body, to which the liquid developer drawn up by the developer drawing-up portion is supplied, and that supplies the liquid developer to the image supporting body in a region facing the image supporting body; a developer removing portion that is disposed to contact a predetermined position on a surface of the developing roller on a downstream side to the region facing the image supporting body in a rotational direction of the developing roller, and removes the liquid developer remaining on the surface of the developing roller; an accumulated developer delivery portion that delivers the liquid developer accumulated in the developer accumulation portion to a predetermined region on the surface of the developing roller between the region facing the image supporting body and the predetermined position contacting the developer removing portion; a supply control portion that controls the developer supply portion to change a supply amount of the liquid developer from a first supply amount to a second supply amount that is larger than the first supply amount, in a case of forming a toner image on the image supporting body; and a printing percentage calculator that calculates a printing percentage of the toner image formed on the image supporting body, wherein in a case of the printing percentage calculated by the printing percentage calculator being less than a predetermined value, the supply control portion controls the developer supply portion to change the supply amount of the liquid developer from the first supply amount or the second supply amount to a third amount, which is larger than the second amount.