Canon Kabushiki Kaisha

Shigemi Kamoshida

Isao Koishi

Takeshi Arimitsu

Yu Fukasawa

Shunsuke Uratani

Yusuke Niikawa

Shohei Katsuya

Naoki Hayashi

Takuya Kawakami

Ryota Shibuya

Tetsuo Uesugi

Goshi Ozaki

Ryoji Kusudo

Hiroyuki Munetsugu

Kazuhiko Kanno

Tachio Kawai

Takeshi Kubota

Teruhiko Sasaki

Yosuke Kashiide

Ryuta Murakami

Hiroki Ogino

Fumito Nonaka

Daisuke Abe

Jun Miyamoto

Ken Kikuchi

Tomonori Mori

Noriyuki Komatsu

Masanori Tanaka

Daisuke Yamamoto

Takashi Kimura

Yuuki Nakamura

Yukio Kubo

Daisuke Makiguchi

Takayuki Namiki

Nobuo Oshima

Yuta Isobe

Atsushi Takasaka

Toshiteru Yamasaki

Yuko Harada

Yuichi Sakakibara

Soichi Ishii

Takashi Taneda

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.

Process cartridge for image forming apparatus

A drum unit usable with a process cartridge includes a photosensitive drum having an axis L; and a coupling member having an axis Land connected to an end portion of the photosensitive drum, the coupling member being provided with a projection extending toward an end portion of the coupling member, wherein the coupling member is movable along the axis Lbetween a first position, and a second position in which the projection is closer to the photosensitive drum than in the first position, wherein the projection is provided with a force receiving portion for receiving a rotational force and an outer surface facing away from the axis L, and wherein at least a part of the outer surface is more distant from the axis Las is further from the photosensitive drum in a direction of the axis L

Drum unit, process cartridge and image forming apparatus

The cartridge is detachably mountable to a main assembly of an image forming apparatus that includes a drive output member configured to output a driving force, and a main assembly side pushing member configured to incline the drive output member by pushing the drive output member. The cartridge includes a photosensitive drum and a cartridge side pushing member. The cartridge side pushing member is configured such that an inclination angle of the drive output member is changed by pushing the main assembly side pushing member.

Cartridge, attachment and mounting kit

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 developing apparatus includes a developer conveyance member including a rotatably supported flexible sheet having a first distance between its rotation axis and an edge of the flexible sheet in a state where the flexible sheet is unbent. A lid of a developing container includes a corner portion that extends a storage space outward of an imaginary circle with a radius of the first distance centered on the rotational axis, and a contact portion which protrudes from an inner surface of the corner portion to an inner side of the imaginary circle and with which the flexible sheet contacts while the conveyance member is being rotated. The contact portion has a distal edge shaped such that a distance between the distal edge and the rotation axis increases toward a downstream side in a rotation direction of the conveyance member as viewed in the direction along the rotation axis.

Developing apparatus having a flexible developer conveyor

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.

A cartridge is detachably mountable to a main assembly of an electrophotographic image forming apparatus. The cartridge includes a rotatable member capable of carrying developer, the rotatable member being rotatable about a rotational axis thereof. The cartridge also includes a coupling member provided at one end portion of the cartridge with respect to a rotational axis direction of the rotatable member, the coupling member including at least one projection and being configured to transmit a rotational force to the rotatable member. A holding member holds the coupling member, and two pins support the holding member, with each of the two pins including a shaft portion elongated in a direction substantially perpendicular to the rotational axis of the rotatable member and the two pins being disposed substantially parallel to each other.

Cartridge, photosensitive member unit and electrophotographic image forming apparatus

There is provided an erroneous mounting prevention system in which, by moving a second cartridge in a mounting direction to mount the second cartridge on a first apparatus main body, a protruding portion is brought into abutment with a surface portion, and, by moving a first cartridge in the mounting direction to mount the first cartridge on the first apparatus main body, the first cartridge is mounted on the first apparatus main body without being restricted from being moved by the surface portion.

Erroneous mounting prevention system

A developing device includes a developing unit, swingably supported, for supplying a developer to an image bearing member, and including an inwardly extending wall portion. In an attitude during use, when against an urging force of an urging member configured to urge the developing unit in a first direction toward the image bearing member, the developing unit is moved in a second direction opposite to the first direction, the inwardly extending wall portion is contactable to a restricting member for restricting an amount of movement of the developing unit in the second direction.

Developing device having restricted movement, process cartridge and image forming apparatus

The present invention provides a cartridge which is dismountable from the main assembly without deteriorating usability performance in a predetermined direction substantially perpendicular to the rotational axis of an image bearing member, the main assembly being not provided with the mechanism for moving the main assembly side engaging portion in the rotational axis direction in response to the opening and closing operation of the main assembly cover of the main assembly. With the movement of the cartridge in such a direction perpendicular to the rotational axis of the image bearing member in the dismounting of the cartridge from the main assembly of the electrophotographic image forming apparatus, the coupling member movable in a direction parallel with the rotational axis of the image bearing member enters a inside of a recess of the main assembly side engaging portion provided in the main assembly of the apparatus to receive a rotational force from the main assembly side engaging portion.

Growing community of inventors

Tokyo, Japan

Shigemi Kamoshida