Canon Kabushiki Kaisha

Hideki Kakuta

Tetsuo Furukawa

Hiroyuki Munetsugu

Kazuo Chadani

Masaaki Sato

Tatsuya Suzuki

Osamu Anan

Hiroki Shimizu

Yasufumi Yoshino

Hideki Nagae

Keisuke Nomura

Susumu Nittani

Toshiaki Takeuchi

Takatoshi Hamada

Masanari Morioka

Naoki Hayashi

Tachio Kawai

Teruhiko Sasaki

Akihiro Fujiwara

Yosuke Kashiide

Masato Tanabe

Goshi Ozaki

Shuichi Gofuku

Tomofumi Kawamura

Yohei Kusano

Joji Goto

Yuko Harada

Yuichi Sakakibara

Yusuke Atsu

Hideki Maeshima

Naoya Asanuma

Yuuki Nakamura

Shuhei Kawasaki

Yu Akiba

Nobuyoshi Yoshida

Yasunori Toriyama

Shota Nakamura

A cartridge for an image forming apparatus includes: a process unit to be used to form an image; a first member including a first resin material; a second member including a second resin material having higher flame retardant capability than the first resin material; and an electrode member including a contact section configured to be supplied with power from an apparatus main body of the image forming apparatus. The electrode member is configured to electrically connect the apparatus main body to the process unit. The second resin material of the second member has a greater density than the first resin material of the first member. The contact section is located in the vicinity of the first and second members and is closer to the second member than to the first member.

Process unit including first and second resin materials and image forming apparatus

A cartridge includes a first unit including a photosensitive member, and a second unit including a developer bearing member and a force receiving portion, the second unit being configured to be rotatable about a first axis to move with respect to the first unit between a first position and a second position. In a state where the first unit is in a same posture as when an image forming operation is performed, the second unit is disposed at the second position by its own weight. The developer bearing member is configured to be rotatable about a second axis. When seen in the direction of the first axis, a first distance between the force receiving portion and the second axis is smaller than a second distance between the first axis and the second axis and a third distance between the first axis and the force receiving portion.

Cartridge and image forming apparatus

Provided is an image forming unit including a photosensitive unit including an image bearing member, a developing unit including a developer bearing member and a container capable of containing a developer, a rotation shaft, the developing unit being rotated around the rotation shaft and positioned at one of a development position where the developer bearing member supplies the developer to the image bearing member and a separation position where the developer bearing member separates from the image bearing member, and a sensing portion sensing a variation or an amount corresponding to an amount of the developer contained in the developing unit. The rotation shaft is located below a developing portion, which is formed of the image bearing member and the developer bearing member, in a gravity direction.

Image forming unit and image forming apparatus

A developer accommodating container includes a developer accommodating portion, a stirring member, and a drive transmitting member. The developer accommodating container further includes an elastic member fixed to the stirring member at one end portion thereof and capable of expanding and contracting in a direction along a longitudinal direction of the developer accommodating portion. With respect to the longitudinal direction, the stirring member is disposed so as to form (1) a first gap between one end portion thereof and an inner surface of the developer accommodating portion on one side and (2) a second gap between the other end portion thereof and another inner surface of the developer accommodating portion on the other side. The stirring member is supported by the developer accommodating portion so as to be movable in the longitudinal direction relative to the developer accommodating portion.

Developer accommodating container, developing device and process cartridge

A developing unit includes a developer bearing member, a container, an end seal, a sheet, and a backup member. The container contains a developer. The container has an opening for supplying the developer to the developer bearing member. The end seal is disposed between the developer bearing member and the developer container. The end seal is disposed at an area of the container outside a longitudinal end of the opening. The sheet seals a gap between the developer bearing member and the container. One widthwise end of the sheet is fixed to the container. The other widthwise end is in contact with the developer bearing member. A longitudinal end of the sheet includes a sandwiched portion between the end seal and the developer bearing member. The backup member is provided in an area facing a surface of the sheet opposite to a surface in contact with the developer bearing member.

Developing unit, process cartridge, and image forming apparatus including process cartridge

There is provided a developing apparatus including a conveyance member configured to bend in contact with an inner wall of a conveyance chamber and convey developer, a portion configured to bend the conveyance member, and a first releasing portion configured to release the bending of the conveyance member, a deforming portion configured to bend the conveyance member moved and released from the first releasing portion, and a second releasing portion configured to release the bending of the conveyance member on the downstream side of the deforming portion in the rotational direction of the conveyance member.

Developing apparatus and process cartridge

A cleaning unit for an image forming apparatus includes a frame; a cleaning blade; a first seal sealing between the frame and the blade, provided by injection molding into the frame adjacent to an axial end; and a second seal between the frame and the drum, provided opposing to the free end portion adjacent to the axial end portion, and the second seal having a L-like configuration with projection extending in a direction crossing with the axial direction outwardly beyond an end surface of the blade, wherein the first seal includes a base portion provided at a position inside of the end surface and extending in the crossing direction and an extension extending from the base portion in the axial direction, the extension having a free end portion compressed by the projection to seal between the projection and the frame.

Cleaning unit, process cartridge and image forming apparatus

In a developing device, a rotation shaft is provided with a developer feeding member, a cleaning member, and a receiving portion. The receiving portion is provided downstream of the developer feeding member and upstream of a light transmitting member, provided to a wall surface of a developer accommodating chamber of the developing device, with respect to a rotational direction of the rotation shaft when the cleaning member has passed through the light transmitting member.

Developing device, process cartridge, and electrophotographic image forming apparatus

A cleaning device for a printer includes a cleaning member including a blade and a supporter having first and second surfaces, and a bent portion connecting them, the blade extending in a longitudinal direction at an end of the first surface opposite from the bent portion; and a resin sealing member provided between the cleaning member and the frame, the sealing member including a first portion between the cleaning member and the frame in a region from the blade to the second surface by way of the first surface along the crossing direction at each of one and the other longitudinal ends of the cleaning member, and a second portion sealing between the second surface and the frame in a region between the first portions at the one and the other ends along the longitudinal direction. The second portion is contacted to the second surface with an inclination.

Cleaning device, process cartridge, and electrophotographic image forming apparatus

Developing device for use with an electrophotographic image forming apparatus, process cartridge detachably mountable to a main assembly of an electrophotographic image forming apparatus, and an electrophotographic image forming apparatus

A cartridge includes: a memory portion; a substrate having the memory portion and an electrical contact; a support portion for supporting the substrate with the electrical contact being exposed; a first movement regulation portion configured to regulate the movement of the substrate ; and a second movement regulation portion configured to regulate the movement of the substrate, wherein the movement regulation direction in which the movement of the substrate is regulated by the second movement regulation portion is the same as the movement regulation direction in which the movement of the substrate is regulated by the first movement regulation portion, and wherein the movement regulation distance that the movement of the substrate is regulated by the second movement regulation portion is shorter than or equal to the movement regulation distance that the movement of the substrate is regulated by the first movement regulation portion.

A cleaning unit including: frame abutment portions each including a first abutment portion and a second abutment portion; support portions each including a first support portion which abuts against the first abutment portion, and a second support portion which abuts against the second abutment portion so as to support a cleaning member in a pivotable manner about the frame abutment portions as a pivot axis; and an urging member configured to urge the cleaning member in a direction in which an elastic member is brought into contact with a photosensitive drum by pivoting the cleaning member.

Cleaning unit, process cartridge, and electrophotographic image forming apparatus

Growing community of inventors

Suntou-gun, Japan

Hideki Kakuta