Canon Kabushiki Kaisha

Takeshi Arimitsu

Isao Koishi

Jun Miyamoto

Shigemi Kamoshida

Kanji Yokomori

Yusuke Niikawa

Tachio Kawai

Masanari Morioka

Susumu Nittani

Kouji Miura

Hideki Maeshima

Yoshiyuki Batori

Ryoji Kusudo

Shigeo Miyabe

Minoru Sato

Naoki Hayashi

Ken Kikuchi

Noriyuki Komatsu

Yu Fukasawa

Shunsuke Uratani

Ryota Shibuya

Hiroaki Sasaki

Shohei Katsuya

Koji Hashimoto

Tadashi Horikawa

Koji Miura

Kazuhiko Kanno

Hideki Sato

Daisuke Yamamoto

Yuuki Nakamura

Kojiro Yasui

Hiroki Ogino

Naoki Matsumaru

Atsushi Takasaka

Kyoji Kusudo

Masanari Morita

A cartridge includes a photosensitive drum having a rotational axis about which the photosensitive drum is rotatable, a developing roller having a rotational axis about which the developing roller is rotatable, and a casing rotatably supporting the photosensitive drum and the developing roller. The casing includes a groove open to outside of the casing, with the groove being defined by a first side surface, a second side surface, and a bottom surface between the first side surface and the second side surface. As seen in the direction of the rotational axis of the photosensitive drum, the rotational axis of the photosensitive drum and the groove are positioned along a line in an extended direction, with at least a portion of a first projected part being positioned on one side of the line and at least a portion of a second projected part being positioned on the other side of the line. A first end of the groove and a second end of the groove are open such that the groove forms a channel in the casing along the extended direction.

Cartridge and drum unit for electrophotographic image forming apparatus

A cartridge includes a photosensitive drum having a rotational axis about which the photosensitive drum is rotatable, a developing roller having a rotational axis about which the developing roller is rotatable, and a casing rotatably supporting the photosensitive drum and the developing roller. The coupling member is operatively connected to the photosensitive drum, with the coupling member including at least one projection capable of receiving a rotational force to rotate the photosensitive drum. A spring is provided with a movable part that is movable relative to the casing in a direction away from the rotational axis of the developing roller to urge the coupling member so that at least the projection of the coupling member moves away from the rotational axis of the developing roller.

A cartridge includes a photosensitive drum, a developing roller, and a casing rotatably supporting the photosensitive drum and the developing roller. The casing includes a groove open to outside of the casing. The casing also includes first and second projected parts that project from the first end portion of the casing in the direction of a rotational axis of the photosensitive drum and away from the photosensitive drum. As seen in the direction of the rotational axis of the photosensitive drum, the rotational axis of the photosensitive drum and the groove are positioned along a line in the extended direction, with the first projected part being positioned on one side of the line and the second projected part being positioned on the other side of the line. A first end of the groove and a second end of the groove are open such that the groove forms a channel in the casing along the extended direction.

A cartridge mountable to a printer, said printer including a coupling guide contactable to a coupling of the cartridge to guide the coupling member. A case of the cartridge is provided with a hole for exposing a free end portion of the coupling to an outside of the cartridge, and a retracted portion provided in downstream of the hole with respect to the mounting direction of the cartridge. When the cartridge is mounted to a main assembly of the printer, the coupling guide enters the retracted portion from which the coupling member has retracted.

Cartridge

Process cartridge for printer

An image forming apparatus for forming an image on a recording material includes a mounting portion to which a cartridge is detachably mounted and a drive transmission member for transmitting a driving force by being engaged with a drive-transmitted member provided on the cartridge when the cartridge is mounted to the mounting portion. In addition, a protecting member is movable between a protecting position where the drive transmission member is prevented from being exposed toward the mounting portion and an open position where the protecting member is retracted from the protecting position to expose the drive transmission member to the mounting portion thereby to permit engagement of the drive transmission member with the drive-transmitted member.

Image forming apparatus and cartridge

An image forming apparatus, to which a plurality of cartridges are detachably mountable, with the cartridges each having a cartridge side identification portion, includes an image forming unit configured to form an image, a plurality of mounting portions to which the cartridges are demountably mountable, and an identification urging mechanism provided in each of the mounting portions. The identification urging mechanism permits a cartridge to be mounted to the mounting portion when the cartridge is to be properly mounted to the mounting portion on the basis of correspondence with the cartridge side identification portion, and urges the cartridge in a direction opposite a direction in which the cartridge is mounted when the cartridge is improper for the mounting portion. The identification urging mechanism permits, even when the cartridge is improper for the mounting portion, the cartridge to enter to a mount position where the proper cartridge is mounted.

Image forming apparatus

Toner cartridge

Growing community of inventors

Odawara, Japan

Takeshi Arimitsu