Canon Kabushiki Kaisha

Sony Corporation

Tomonori Mori

Noriyuki Komatsu

Kazuo Chadani

Koji Hashimoto

Daisuke Abe

Tadayuki Tsuda

Teruhiko Sasaki

Makoto Hayashida

Keiji Mabuchi

Ryoji Suzuki

Masaki Ojima

Kazunari Murayama

Tetsuo Uesugi

Hisayoshi Kojima

Hideshi Kawaguchi

Tetsuya Numata

Naoya Asanuma

Naoki Maeda

Satoru Harada

Masato Tanabe

Yuuki Nakamura

Shunsuke Uratani

Hironobu Isobe

Satoru Motohashi

Masaaki Sato

Ken Kikuchi

Kazuhiko Kanno

Toshiyuki Karakama

Shinya Noda

Hiroki Ogino

Fumito Nonaka

Yasufumi Yoshino

Tatsuya Shiratori

Tsuyoshi Ogawa

Kinya Harada

Shinji Goto

Kazufumi Muto

Masakazu Tatsumi

Jun Miyamoto

Koji Yamaguchi

Nobuo Nakamura

Susumu Nittani

Isao Koishi

Tadashi Horikawa

Shuichi Gofuku

Kojiro Yasui

Shigemi Kamoshida

Daisuke Hiramatsu

Keisuke Nomura

Takayuki Toyama

Takamasa Wada

Naofumi Sakai

A cartridge includes a drum unit and a development unit. The drum unit includes a photosensitive drum, a frame, a transfer roller, and a cleaning member. The development unit includes a development roller, and a memory. The cleaning member is configured to come into contact with the photosensitive drum at a region between a development nip portion and a transfer nip portion in a circumferential direction of the photosensitive drum and at an end portion of the photosensitive drum in a direction of the rotational axis. The frame has an exposing hole through which the memory is exposed from the frame, and a recessed portion that is adjacent to the exposing hole in the direction of the rotational axis, and stores foreign matters removed from the photosensitive drum by the cleaning member.

Cartridge and image forming apparatus

A cartridge unit includes: a first unit which includes a first supporting portion and a second supporting portion; and a second unit which includes a first supported portion, a second supported portion, and a storage member, the storage member including a memory contact, and a contact arrangement surface on which the memory contact is disposed. The second unit rotates from a first position to a second position in a state in which the first supported portion is supported by the first supporting portion and the second supported portion is supported by the second supporting portion to be positioned with respect to the first unit. A normal direction of the contact arrangement surface faces toward a direction in which the memory contact is exposed. The normal direction faces toward a direction opposite to a direction in which the second unit is directed from the first position to the second position.

Cartridge unit

A developing unit, which is attachable to and detachable from a photosensitive member unit, includes: a developing roller; a housing in which a holding space that holds toner is formed; and a pressing receiving portion that receives pressing force from a pressing member. The housing includes a first bottom portion that projects toward an outer side of the holding space, and a second bottom portion that projects toward the outer side of the holding space, in a state in use. When viewed in a direction of a rotation axis of the developing roller, at least part of the pressing receiving portion is located in a space surrounded by the first bottom portion, the second bottom portion, and a tangent line tangent to both an outer wall of the first bottom portion and an outer wall of the second bottom portion.

Process cartridge

A foreign substance collection apparatus includes: a frame body; a photosensitive drum; a cleaning roller which collects foreign substances from a surface of the photosensitive drum; a collecting roller which further collects the foreign substances having been collected by the cleaning roller from the cleaning roller; and a scraping member which scrapes off the foreign substances from the collecting roller. A foreign substance collecting portion included in the frame body has, in a posture during use: a first inner bottom surface which is positioned below the scraping member in a gravity direction; an outer bottom surface which is positioned further below the first inner bottom surface; and a connecting surface which intersects the first inner bottom surface and the outer bottom surface and which connects the first inner bottom surface and the outer bottom surface with each other.

Foreign substance collection apparatus, process cartridge, and image forming apparatus

A process cartridge includes a first unit including an image bearing member configured to carry an electrostatic latent image, and a second unit including a developer bearing member configured to develop the electrostatic latent image carried on the image bearing member into a toner image, the second unit being capable of being mounted on the first unit in a mounting direction. The first unit includes a moving member that moves the second unit mounted on the first unit at a mounting position to a detachment position. The second unit includes a storage unit that stores information about the second unit. The moving member is disposed on a first side of the process cartridge in a longitudinal direction of the image bearing member. An electrode of the storage unit is disposed on a second side of the process cartridge in the longitudinal direction.

Process cartridge and image forming apparatus

A process cartridge comprises a photosensitive drum and a developing roller. A coupling member is provided adjacent to one axial end of the developing roller. The coupling member includes a driven portion, and an intermediary portion configured and positioned to engage with the driven portion. The intermediary portion is also configured to be movable relative to the driven portion in a direction crossing the axis of the developing roller while maintaining engagement with the driven portion. The coupling member further includes a driving portion configured and positioned to receive a driving force for rotating the developing roller. The driving portion is also configured to engage with the intermediary portion, and to be movable relative to the intermediary portion in a direction crossing the axis of the developing roller while maintaining engagement with the intermediary portion.

A drum unit includes a photosensitive drum in a coupling member. The coupling member includes an engageable member having a driving force receiving portion which is capable of entering a recess of a driving shaft to receive a driving force for rotating photosensitive drum. The coupling member includes a holding member configured to hold said engageable member so as to be slidable at least in a radial direction of said drum unit.

Drum unit, cartridge, electrophotographic image forming apparatus and coupling member

Growing community of inventors

Numazu, Japan

Tomonori Mori