Patent Number: 6,311,034

Title: Wet type electrophotography apparatus to evenly apply developing solutionon a developing roller

Abstract: A wet type electrophotography apparatus including a non-volatile,high-viscosity, high-concentration liquid toner as a developing solution.The wet type electrophotography apparatus includes a photoconductivemedium on which an electrostatic latent image is formed, a prewettingdevice for applying a film of a prewetting solution to the surface of thephotoconductive medium, a developing device including a developing roller,and a developing solution applying device for applying a film of thedeveloping solution on the developing roller. The developing roller feedsthe developing solution to the photoconductive medium by making contactwith the photoconductive medium, and causes toner particles in thedeveloping solution to deposit on an image carrier in accordance with anelectrical field formed between the developing roller and thephotoconductive medium. The developing solution applying device includes aplurality of interconnecting rotating rollers for transporting thedeveloping solution while spreading and applying it on the surface withthe rotating rollers, and applies a film of the developing solution on thesurface of the final-stage rotating roller in accordance with anelectrical field formed between the final-stage rotating roller and thedeveloping roller by a bias voltage fed to the final-stage rotatingroller.

Inventors: Nakashima; Yutaka (Kanazawa, JP), Inamoto; Akihiko (Uchinada-machi, JP), Uesugi; Shigrki (Unoke-machi, JP), Moto; Satoru (Kanazawa, JP), Ichida; Motoharu (Tsubata-machi, JP), Takabatake; Masanari (Kanazawa, JP), Okano; Shigeharu (Hakui, JP), Takeda; Seiichi (Kanazawa, JP)

Assignee:

International Classification:

Expiration Date: 10/32013