Mitsubishi Heavy Industries Limited

Hiroyoshi Kawamura

Yasuharu Suda

Hiroaki Kuno

Hiroshi Suzumura

Hiroaki Ikeda

Tomoaki Okada

Toyofumi Shimada

To provide an electrophotographic printer which can satisfy regulations for exhaust gas emission easily, a printer is provided with a circulation line for taking out and returning gas generated in a casing of the printer, and a heat exchanger, for cooling the gas and for recovering solvent, is provided midway on the circulation line. The heat exchanger lowers a concentration of the gas. A detection sensor detects a temperature and humidity of the gas in the casing and a heater, provided downstream of the heat exchanger, adjusts a humidity of the gas which is then returned into the casing, upon receiving an output of the detection sensor.

Electrophotographic printer

Disclosed is a liquid toner composition, comprising an ethylene-based copolymer resin, an ethylene-based copolymer resin, an electrically insulating liquid material, and a surfactant represented by general formula given below ##STR1## where R is an alkyl group or an alkylaryl group, n, which represents ad adduct ethyleneoxide mole number, is an integer of 4 to 13, and R' is H or R(CH.sub.2 CH.sub.2 O).sub.n group.

Liquid toner composition and method of manufacturing the same

An image forming apparatus and method in which the flow of a toner image formed on an image carrier is prevented at the time of removing a surplus liquid developer and at the time of transfer of the image onto a transfer material. The apparatus includes an image carrier, a device for forming an electrostatic latent image on a surface of the image carrier, and a developing section for supplying a liquid developer onto the electrostatic latent image so as to form a toner image. The apparatus also includes a device for removing a surplus liquid developer remaining on the surface of the image carrier after the toner image is formed. A transfer device transfers the toner image onto a surface of a transfer material. An electric charge giving device, which is disposed between the developing section and the device for removing the surplus liquid developer, applies an electric charge to the toner image in a same polarity as that of the toner image.

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Mihara, Japan

Hiroyoshi Kawamura