An image forming apparatus includes a recording material feeding portion; an image forming portion configured to form an image with a liquid developer containing toner and an ultraviolet curable agent; an ultraviolet irradiating portion; a heating portion configured to heat the recording material on a feeding path of the recording material from a recording material feeding position where the recording material feeding portion feeds the recording material to an ultraviolet irradiation position where the image is irradiated with the ultraviolet radiation by the ultraviolet irradiating portion; a detecting portion configured to detect a temperature of the recording material; and a controller configured to control an output of the heating portion depending on the temperature of the recording material detected by the detecting portion so that the temperature of the recording material is within a target temperature range.

An apparatus to concentrate electro fluid. The apparatus comprising an electrically grounded drum, a fluid feed to provide electro fluid to the surface of the drum and a roller. The roller comprising a metal core to be electrically biased and a ceramic coating around the metal core.

A developing device, includes a developing member that forms a first nip with a latent image forming member on which a latent image is formed, and develops the latent image as a toner image using a developer containing a toner and a first liquid, a first supply member that forms a second nip with the developing member, and supplies the developer to the developing member, and a second supply member that faces the developing member at an upstream of the first nip in the developing member in a rotation direction of the developing member and at a downstream of the second nip, and supplies a second liquid to the developing member.