Ricoh Printing Systems, Ltd.

Hitachi, Ltd.

Shoji Ukei

Kazuhiro Wakamatsu

Toshio Ogiso

Chikara Hiraoka

Masaru Nakano

Toru Hanashima

Kazuo Kikuchi

Tetsuro Akasaki

Tomio Hayano

Akira Shimizu

Isamu Terashima

Junichi Matsuno

Tadashi Okano

Hiroyuki Tadokoro

Shigeru Obata

Haruo Hashimoto

Shogo Matsumoto

Takamitsu Ikematsu

Tetsuji Takegoshi

Hiromitsu Fukuda

Kazushige Oonishi

Katsuyoshi Onose

Toru Ohashi

Tsuyoshi Koyama

Tuyoshi Koyama

An image forming device includes an openable panel disposed on a side of the image forming device. The panel includes a pair of carrying rollers, a transcribing roller and a pair of discharging sheet carrying rollers.

Image forming apparatus having a sheet removal portion

A fixing device includes a roller; an endless belt which is in contact with the roller and rotates with a circulation of the roller in a follower manner; a heating source in at lease one of an inside of the roller and an inside of the endless belt; and a pressure-applying member which is inside the endless belt and presses the endless belt against the roller. A sliding layer is provided on a side on which the pressure-applying member is in contact with the endless belt, and the sliding layer comprises at least two layers and holds a lubricant.

Fixing device and image forming apparatus

An image forming and recording apparatus, having a fixing apparatus for fixing unfixed toner image on a recording medium, wherein the fixing apparatus includes a fixing roller integrating a heater therein, an endless belt wound around the fixing roller, and three pressure members for pressing the endless belt onto the fixing roller. A pressure member located nearest to a side of entry of paper among the three pressure members is made up with a non-rotary type pressure member, and other two pressure members are made up with either one of a rotary type pressure member and the non-rotary type pressure member.

Image forming and recording apparatus with three pressure members

An image forming apparatus in which a distance along a photosensitive belt from a cleaning unit to an exposing position is set to be shorter than a distance from the rear end of a print image to the front end of the following print image, so that a latent image is not formed by an exposing unit when a joint of the photosensitive belt passes the cleaning unit.

Image forming apparatus with reduced latent image vibration caused by photosensitive belt joint

The present invention relates to a desk-top type color electro-photographic apparatus which is easy in use, small in size and light in weight, wherein maintenance such as changing its photosensitive member can be performed by a user and color adjustment is performed with high accuracy of less than 100 .mu.m. Developing units for four colors are placed in a rank, a single endless-belt-shaped photosensitive member being placed below them to form an approximately oval shape, the photosensitive member being touched with a transfer member on its major axis side to transfer each color of images. In addition to this, the photosensitive member is employed a cartridge type for easiness of user's maintenance and constructed such that highly accurate positioning between the body of apparatus and the cartridge can be performed. Effect of the eccentricity of pulleys is decreased by means of making the pulleys wrapped with the photosensitive member have the identical diameter and making the diameter of the transfer member integer times as large as that of the pulley.

Color electro-photographic apparatus with endless-belt-shaped

Growing community of inventors

Ibaraki, Japan

Shoji Ukei