Fuji Xerox Co., Ltd.

Fujifilm Business Innovation Corp.

Mabumi Kashihara

Daisuke Tanaka

Masaaki Tokunaga

Masakazu Shirai

Masatoshi Yamada

Hiroyuki Koide

Koichi Sato

Kiyotoshi Kaneyama

Kaoru Matsushita

Hibiki Sasaki

Takeshi Yasuda

Kentaro Iwamoto

Hiromoto Yamaki

Toshihiko Kamiyama

A medium transport device includes a transport member and a guide member. The transport member supports and transports a medium. The guide member is shifted from the transport member in a width direction of the medium to guide the medium. The guide member includes contact portions that come into contact with the medium. The contact portions are spaced apart from one another in a transport direction of the medium.

Medium transport device and image forming apparatus

An image forming apparatus includes a transfer unit, a resistance detection unit, and a changing unit. The transfer unit transfers an image to a continuous recording medium. The resistance detection unit detects a resistance of the recording medium at a position upstream of the transfer unit in a transport direction of the recording medium. The changing unit changes a transfer condition of the transfer unit in accordance with a detection result of the resistance detection unit.

Resistance detection unit and image forming apparatus comprising the same

A transfer assembly includes a support member having a side wall that extends in such a direction as to intersect a line extending from the rotation axis of a transfer roller and that has a hole through which a support shaft is inserted with some play being present. The hole has such a shape that, at the beginning of a period when a door is rotated from an open state to a closed state and a positioned portion is in contact with a positioning member, gaps are formed between the support shaft and a wall surface of the hole on both sides of the support shaft in a radial direction crossing an arc that is drawn from a center of the arc at the center line of rotation of the door and that passes through the support shaft.

Image forming apparatus and transfer device having a rotatable door

An image forming apparatus includes a body frame, a transport unit, an image carrier, a transfer device, a fixing device, a guide member assembly, a door, and a positioning member. The guide member assembly includes a guide member, a positioned portion, and a support member. The support member supports the guide member and has a side wall that extends in such a direction as to intersect a line drawn in the width direction and that has a hole through which a support shaft is inserted with some play being present. The guide member assembly is supported by the door with some play being present between the guide member assembly and a base plate and is urged by an urging member. The hole is a long hole having a major axis extending in an opening direction of the door away from a center line of rotation of the door.

Image forming apparatus and transport guiding device having a smoothly operating door

A charging device comprises a conductor, which is in contact with a photoconductor, and a power source circuit, which applies a voltage to the conductor and electrically charges the photoconductor as to have a predetermined level of potential. The power source circuit includes a resistor having a predetermined level of resistance, and provides the conductor with a voltage through the resistor, thereby to stabilize the charged potential of the photoconductor.

Charging device and transfer device

Growing community of inventors

Kanagawa, Japan

Mabumi Kashihara